Peterborough Weather Records (CA006166416)
Record envelope, standing records and threshold days for Peterborough (CA006166416), Ontario, Canada, with 105 years of record.
Key Facts for Peterborough
- Peterborough (CA006166416) is a weather station in Ontario, Canada at 44.28 latitude and -78.32 longitude, 194 m (636 ft) above sea level.
- The station reports from 1866 to 1970, 105 years of record.
- 1,464 records set at Peterborough still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Peterborough tied a daily record low maximum temperature of -15.0 C (5.0 F) on 22 December 1970.
About the Station
- Location: Ontario, Canada, 44.28 latitude, -78.32 longitude.
- Elevation: 194 m (636 ft).
- Period of record: 1866 to 1970, 105 years.
- Eligible elements: tmax, tmin, prcp, snow.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 14.4 C (57.9 F) | -37.8 C (-36.0 F) | n/a | n/a |
| Feb | 13.9 C (57.0 F) | -38.9 C (-38.0 F) | n/a | n/a |
| Mar | 25.0 C (77.0 F) | -31.1 C (-24.0 F) | n/a | n/a |
| Apr | 30.0 C (86.0 F) | -20.0 C (-4.0 F) | n/a | n/a |
| May | 35.0 C (95.0 F) | -7.8 C (18.0 F) | n/a | n/a |
| Jun | 36.7 C (98.1 F) | -1.7 C (28.9 F) | n/a | n/a |
| Jul | 38.9 C (102.0 F) | 2.2 C (36.0 F) | n/a | n/a |
| Aug | 37.2 C (99.0 F) | -2.8 C (27.0 F) | n/a | n/a |
| Sep | 37.2 C (99.0 F) | -7.8 C (18.0 F) | n/a | n/a |
| Oct | 30.6 C (87.1 F) | -14.4 C (6.1 F) | n/a | n/a |
| Nov | 23.9 C (75.0 F) | -23.9 C (-11.0 F) | n/a | n/a |
| Dec | 15.0 C (59.0 F) | -39.4 C (-38.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1866 | 10 |
| 1867 | 16 |
| 1868 | 21 |
| 1869 | 24 |
| 1870 | 11 |
| 1871 | 56 |
| 1872 | 17 |
| 1873 | 14 |
| 1874 | 2 |
| 1877 | 4 |
| 1878 | 10 |
| 1879 | 21 |
| 1880 | 12 |
| 1881 | 21 |
| 1882 | 10 |
| 1883 | 9 |
| 1884 | 16 |
| 1885 | 17 |
| 1886 | 10 |
| 1887 | 21 |
| 1891 | 26 |
| 1892 | 29 |
| 1893 | 22 |
| 1894 | 21 |
| 1895 | 48 |
| 1896 | 28 |
| 1897 | 14 |
| 1898 | 9 |
| 1899 | 11 |
| 1900 | 18 |
| 1901 | 10 |
| 1902 | 19 |
| 1903 | 16 |
| 1904 | 11 |
| 1905 | 8 |
| 1906 | 16 |
| 1907 | 13 |
| 1908 | 15 |
| 1909 | 22 |
| 1910 | 16 |
| 1911 | 20 |
| 1912 | 10 |
| 1913 | 16 |
| 1914 | 23 |
| 1915 | 11 |
| 1916 | 21 |
| 1917 | 11 |
| 1918 | 11 |
| 1919 | 13 |
| 1920 | 13 |
| 1921 | 15 |
| 1922 | 10 |
| 1923 | 19 |
| 1924 | 11 |
| 1925 | 20 |
| 1926 | 19 |
| 1927 | 13 |
| 1928 | 11 |
| 1929 | 11 |
| 1930 | 14 |
| 1931 | 14 |
| 1932 | 14 |
| 1933 | 24 |
| 1934 | 12 |
| 1935 | 4 |
| 1936 | 21 |
| 1937 | 11 |
| 1938 | 16 |
| 1939 | 10 |
| 1940 | 13 |
| 1941 | 12 |
| 1942 | 5 |
| 1943 | 14 |
| 1944 | 5 |
| 1945 | 21 |
| 1946 | 17 |
| 1947 | 14 |
| 1948 | 13 |
| 1949 | 8 |
| 1950 | 14 |
| 1951 | 10 |
| 1952 | 5 |
| 1953 | 7 |
| 1954 | 16 |
| 1955 | 9 |
| 1956 | 14 |
| 1957 | 6 |
| 1958 | 5 |
| 1959 | 14 |
| 1960 | 7 |
| 1961 | 15 |
| 1962 | 18 |
| 1963 | 14 |
| 1964 | 5 |
| 1965 | 22 |
| 1966 | 11 |
| 1967 | 14 |
| 1968 | 10 |
| 1969 | 5 |
| 1970 | 9 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1902-01-22 | Record daily snowfall | Record daily snowfall 66.0 cm (26.0 in) |
| 1911-07-05 | Record high maximum temperature | Record high maximum temperature 37.8 C (100.0 F) |
| 1918-06-30 | Record daily precipitation | Record daily precipitation 83.6 mm (3.3 in) |
| 1931-07-01 | Record high maximum temperature | Record high maximum temperature 38.3 C (100.9 F) |
| 1936-07-11 | Record high maximum temperature | Record high maximum temperature 38.9 C (102.0 F) |
| 1941-08-31 | Record daily precipitation | Record daily precipitation 87.1 mm (3.4 in) |
Wettest Day of Each Month
Aug: 87.1 mm (3.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 66.0 mm (2.6 in) | 22 January 1902 |
| Feb | 44.5 mm (1.8 in) | 22 February 1878 |
| Mar | 57.9 mm (2.3 in) | 28 March 1870 |
| Apr | 65.3 mm (2.6 in) | 20 April 1893 |
| May | 66.8 mm (2.6 in) | 20 May 1894 |
| Jun | 83.6 mm (3.3 in) | 30 June 1918 |
| Jul | 77.7 mm (3.1 in) | 28 July 1938 |
| Aug | 87.1 mm (3.4 in) | 31 August 1941 |
| Sep | 81.3 mm (3.2 in) | 13 September 1878 |
| Oct | 62.2 mm (2.4 in) | 14 October 1893 |
| Nov | 61.5 mm (2.4 in) | 15 November 1871 |
| Dec | 43.2 mm (1.7 in) | 14 December 1901 |
Period of Record Coverage
1866 to 1970| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1866 | 235 | 64% | No |
| 1867 | 313 | 86% | No |
| 1868 | 314 | 86% | No |
| 1869 | 313 | 86% | No |
| 1870 | 313 | 86% | No |
| 1871 | 307 | 84% | No |
| 1872 | 311 | 85% | No |
| 1873 | 313 | 86% | No |
| 1874 | 77 | 21% | No |
| 1877 | 300 | 82% | No |
| 1878 | 301 | 82% | No |
| 1879 | 305 | 84% | No |
| 1880 | 308 | 84% | No |
| 1881 | 306 | 84% | No |
| 1882 | 312 | 85% | No |
| 1883 | 309 | 85% | No |
| 1884 | 353 | 96% | Yes |
| 1885 | 365 | 100% | Yes |
| 1886 | 364 | 100% | Yes |
| 1887 | 364 | 100% | Yes |
| 1891 | 212 | 58% | No |
| 1892 | 346 | 95% | Yes |
| 1893 | 360 | 99% | Yes |
| 1894 | 365 | 100% | Yes |
| 1895 | 334 | 92% | Yes |
| 1896 | 320 | 87% | No |
| 1897 | 365 | 100% | Yes |
| 1898 | 357 | 98% | Yes |
| 1899 | 352 | 96% | Yes |
| 1900 | 365 | 100% | Yes |
| 1901 | 364 | 100% | Yes |
| 1902 | 365 | 100% | Yes |
| 1903 | 358 | 98% | Yes |
| 1904 | 365 | 100% | Yes |
| 1905 | 353 | 97% | Yes |
| 1906 | 356 | 98% | Yes |
| 1907 | 365 | 100% | Yes |
| 1908 | 366 | 100% | Yes |
| 1909 | 365 | 100% | Yes |
| 1910 | 365 | 100% | Yes |
| 1911 | 364 | 100% | Yes |
| 1912 | 366 | 100% | Yes |
| 1913 | 365 | 100% | Yes |
| 1914 | 365 | 100% | Yes |
| 1915 | 365 | 100% | Yes |
| 1916 | 366 | 100% | Yes |
| 1917 | 365 | 100% | Yes |
| 1918 | 365 | 100% | Yes |
| 1919 | 364 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 364 | 100% | Yes |
| 1923 | 364 | 100% | Yes |
| 1924 | 365 | 100% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 364 | 100% | Yes |
| 1927 | 364 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 363 | 99% | Yes |
| 1934 | 344 | 94% | Yes |
| 1935 | 306 | 84% | No |
| 1936 | 365 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 347 | 95% | Yes |
| 1943 | 334 | 92% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 335 | 92% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 361 | 99% | Yes |
| 1963 | 322 | 88% | No |
| 1964 | 305 | 83% | No |
| 1965 | 364 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 22 December 1970 | Peterborough, CA | daily low max (Tie) | -15.0 C (5.0 F) | tie | 15 years | 3 of 100 (Routine) |
| 16 December 1970 | Peterborough, CA | daily snowfall | 12.7 cm (5.0 in) | 2.0 cm (0.8 in) | 12 years | 17 of 100 (Routine) |
| 20 November 1970 | Peterborough, CA | daily rain | 20.6 mm (0.8 in) | 9.4 mm (0.37 in) | 39 years | 20 of 100 (Routine) |
| 12 November 1970 | Peterborough, CA | daily high min | 8.9 C (48.0 F) | 1.7 C (3.1 F) | 57 years | 30 of 100 (Routine) |
| 14 October 1970 | Peterborough, CA | daily high min (Tie) | 14.4 C (57.9 F) | tie | 55 years | 6 of 100 (Routine) |
| 24 September 1970 | Peterborough, CA | daily rain | 19.1 mm (0.8 in) | 3.4 mm (0.13 in) | 29 years | 20 of 100 (Routine) |
| 19 July 1970 | Peterborough, CA | daily low max | 17.8 C (64.0 F) | 0.5 C (0.9 F) | 4 years | 12 of 100 (Routine) |
| 19 June 1970 | Peterborough, CA | daily low max | 15.0 C (59.0 F) | 2.2 C (4.0 F) | 56 years | 31 of 100 (Routine) |
| 2 June 1970 | Peterborough, CA | daily high min (Tie) | 18.3 C (64.9 F) | tie | 77 years | 8 of 100 (Routine) |
| 1 May 1970 | Peterborough, CA | daily high min | 15.6 C (60.1 F) | 0.6 C (1.1 F) | 28 years | 19 of 100 (Routine) |
| 13 February 1970 | Peterborough, CA | daily low max | -17.8 C (0.0 F) | 2.8 C (5.0 F) | 56 years | 30 of 100 (Routine) |
| 10 February 1970 | Peterborough, CA | daily snowfall (Tie) | 14.0 cm (5.5 in) | tie | 46 years | 5 of 100 (Routine) |
| 2 February 1970 | Peterborough, CA | daily high min | 1.7 C (35.1 F) | 0.6 C (1.1 F) | 2 years | 10 of 100 (Routine) |
| 1 February 1970 | Peterborough, CA | daily high max | 5.6 C (42.1 F) | 1.2 C (2.2 F) | 92 years | 39 of 100 (Notable) |
| 25 January 1970 | Peterborough, CA | daily rain (Tie) | 15.2 mm (0.6 in) | tie | 55 years | 6 of 100 (Routine) |
| 25 January 1970 | Peterborough, CA | daily snowfall (Tie) | 15.2 cm (6.0 in) | tie | 55 years | 6 of 100 (Routine) |
| 22 January 1970 | Peterborough, CA | daily low min | -31.7 C (-25.1 F) | 2.3 C (4.1 F) | 84 years | 37 of 100 (Notable) |
| 21 January 1970 | Peterborough, CA | daily low max | -18.3 C (-0.9 F) | 2.7 C (4.9 F) | 52 years | 29 of 100 (Routine) |
| 23 December 1969 | Peterborough, CA | daily low max (Tie) | -14.4 C (6.1 F) | tie | 63 years | 7 of 100 (Routine) |
| 3 November 1969 | Peterborough, CA | daily high min | 9.4 C (48.9 F) | 1.1 C (2.0 F) | 12 years | 15 of 100 (Routine) |
Climate Trend
83 complete years, 1867 to 1970| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1867 | 5.2 C | -1.04 C |
| 1868 | 4.9 C | -1.36 C |
| 1869 | 4.5 C | -1.76 C |
| 1870 | 5.4 C | -0.89 C |
| 1871 | 4.3 C | -2.01 C |
| 1872 | 5.9 C | -0.38 C |
| 1873 | 5.3 C | -0.96 C |
| 1878 | 7.7 C | +1.45 C |
| 1879 | 5.7 C | -0.52 C |
| 1881 | 7.1 C | +0.87 C |
| 1882 | 6.4 C | +0.09 C |
| 1883 | 4.9 C | -1.33 C |
| 1884 | 6.3 C | +0.07 C |
| 1885 | 5.0 C | -1.24 C |
| 1886 | 5.6 C | -0.62 C |
| 1893 | 5.2 C | -1.04 C |
| 1894 | 7.0 C | +0.70 C |
| 1897 | 6.4 C | +0.09 C |
| 1898 | 7.5 C | +1.28 C |
| 1900 | 7.0 C | +0.70 C |
| 1901 | 6.2 C | -0.03 C |
| 1902 | 6.1 C | -0.18 C |
| 1903 | 6.1 C | -0.15 C |
| 1904 | 3.9 C | -2.38 C |
| 1905 | 5.1 C | -1.16 C |
| 1906 | 6.3 C | +0.02 C |
| 1907 | 4.8 C | -1.44 C |
| 1908 | 5.9 C | -0.38 C |
| 1909 | 6.0 C | -0.26 C |
| 1910 | 6.1 C | -0.19 C |
| 1911 | 6.9 C | +0.59 C |
| 1912 | 5.4 C | -0.82 C |
| 1913 | 7.2 C | +0.94 C |
| 1914 | 5.7 C | -0.59 C |
| 1915 | 6.5 C | +0.28 C |
| 1916 | 6.5 C | +0.24 C |
| 1917 | 4.6 C | -1.70 C |
| 1918 | 6.0 C | -0.22 C |
| 1919 | 7.4 C | +1.16 C |
| 1920 | 6.2 C | -0.05 C |
| 1921 | 8.5 C | +2.19 C |
| 1922 | 7.2 C | +0.92 C |
| 1923 | 6.1 C | -0.18 C |
| 1924 | 5.6 C | -0.68 C |
| 1925 | 6.3 C | +0.01 C |
| 1926 | 4.7 C | -1.57 C |
| 1927 | 6.8 C | +0.53 C |
| 1928 | 6.6 C | +0.31 C |
| 1929 | 6.1 C | -0.16 C |
| 1930 | 7.0 C | +0.72 C |
| 1931 | 8.2 C | +1.90 C |
| 1932 | 7.1 C | +0.82 C |
| 1933 | 6.9 C | +0.64 C |
| 1936 | 6.6 C | +0.35 C |
| 1937 | 8.0 C | +1.74 C |
| 1938 | 7.8 C | +1.52 C |
| 1939 | 7.1 C | +0.82 C |
| 1940 | 6.2 C | -0.11 C |
| 1941 | 7.5 C | +1.22 C |
| 1944 | 6.6 C | +0.33 C |
| 1945 | 6.0 C | -0.25 C |
| 1946 | 6.4 C | +0.15 C |
| 1947 | 5.8 C | -0.48 C |
| 1948 | 6.4 C | +0.10 C |
| 1950 | 5.8 C | -0.45 C |
| 1951 | 6.6 C | +0.32 C |
| 1952 | 7.2 C | +0.95 C |
| 1953 | 7.7 C | +1.47 C |
| 1954 | 6.5 C | +0.21 C |
| 1955 | 7.2 C | +0.92 C |
| 1956 | 5.8 C | -0.42 C |
| 1957 | 6.2 C | -0.07 C |
| 1958 | 5.7 C | -0.52 C |
| 1959 | 6.0 C | -0.24 C |
| 1960 | 5.3 C | -1.00 C |
| 1961 | 6.6 C | +0.37 C |
| 1962 | 6.0 C | -0.29 C |
| 1965 | 6.9 C | +0.59 C |
| 1966 | 7.1 C | +0.82 C |
| 1967 | 6.4 C | +0.12 C |
| 1968 | 6.4 C | +0.09 C |
| 1969 | 6.8 C | +0.52 C |
| 1970 | 6.3 C | 0.00 C |
The annual mean temperature here has risen by 0.11 C (0.05 to 0.17) per decade over 1867 to 1970. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 83 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.11 C (0.05 to 0.17) per decade | 0.2 F (0.1 to 0.3) per decade | 1867 to 1970 | 83 | Rise |
| Mean daily maximum | -0.02 C (-0.08 to 0.05) per decade | -0.03 F (-0.15 to 0.08) per decade | 1867 to 1970 | 83 | Not clearly different from zero |
| Mean daily minimum | 0.2 C (0.2 to 0.3) per decade | 0.4 F (0.3 to 0.6) per decade | 1867 to 1970 | 83 | Rise |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1866 to 1970| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 1936 | 33.9 C (93.0 F) | 100 |
| Coldest night (TNn) | -39.4 C (-38.9 F) | 1871 | -30.0 C (-22.0 F) | 100 |
| Wettest day (Rx1day) | 87.1 mm (3.4 in) | 1941 | 39.6 mm (1.6 in) | 101 |
| Wettest five days (Rx5day) | 134.4 mm (5.3 in) | 1902 | 61.7 mm (2.4 in) | 101 |
| Longest dry spell (CDD) | 29 days | 1904 | 18 days | 101 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1866 | 33.9 C (93.0 F) |
| 1867 | 33.3 C (91.9 F) |
| 1868 | 37.2 C (99.0 F) |
| 1869 | 31.1 C (88.0 F) |
| 1870 | 35.0 C (95.0 F) |
| 1871 | 34.4 C (93.9 F) |
| 1872 | 36.7 C (98.1 F) |
| 1873 | 34.4 C (93.9 F) |
| 1874 | 12.8 C (55.0 F) |
| 1877 | 34.4 C (93.9 F) |
| 1878 | 36.1 C (97.0 F) |
| 1879 | 33.9 C (93.0 F) |
| 1880 | 33.3 C (91.9 F) |
| 1881 | 36.7 C (98.1 F) |
| 1882 | 33.3 C (91.9 F) |
| 1883 | 31.1 C (88.0 F) |
| 1884 | 33.9 C (93.0 F) |
| 1885 | 32.8 C (91.0 F) |
| 1886 | 33.9 C (93.0 F) |
| 1887 | 36.7 C (98.1 F) |
| 1890 | n/a |
| 1891 | 34.4 C (93.9 F) |
| 1892 | 36.7 C (98.1 F) |
| 1893 | 35.6 C (96.1 F) |
| 1894 | 35.0 C (95.0 F) |
| 1895 | 35.6 C (96.1 F) |
| 1896 | 34.4 C (93.9 F) |
| 1897 | 35.6 C (96.1 F) |
| 1898 | 36.1 C (97.0 F) |
| 1899 | 34.4 C (93.9 F) |
| 1900 | 36.1 C (97.0 F) |
| 1901 | 35.6 C (96.1 F) |
| 1902 | 30.6 C (87.1 F) |
| 1903 | 33.9 C (93.0 F) |
| 1904 | 31.7 C (89.1 F) |
| 1905 | 33.3 C (91.9 F) |
| 1906 | 33.3 C (91.9 F) |
| 1907 | 31.7 C (89.1 F) |
| 1908 | 33.9 C (93.0 F) |
| 1909 | 33.3 C (91.9 F) |
| 1910 | 32.8 C (91.0 F) |
| 1911 | 37.8 C (100.0 F) |
| 1912 | 32.8 C (91.0 F) |
| 1913 | 36.1 C (97.0 F) |
| 1914 | 33.9 C (93.0 F) |
| 1915 | 31.1 C (88.0 F) |
| 1916 | 37.2 C (99.0 F) |
| 1917 | 35.0 C (95.0 F) |
| 1918 | 36.7 C (98.1 F) |
| 1919 | 36.1 C (97.0 F) |
| 1920 | 32.2 C (90.0 F) |
| 1921 | 36.7 C (98.1 F) |
| 1922 | 32.8 C (91.0 F) |
| 1923 | 34.4 C (93.9 F) |
| 1924 | 32.8 C (91.0 F) |
| 1925 | 33.3 C (91.9 F) |
| 1926 | 31.7 C (89.1 F) |
| 1927 | 33.9 C (93.0 F) |
| 1928 | 33.3 C (91.9 F) |
| 1929 | 34.4 C (93.9 F) |
| 1930 | 32.2 C (90.0 F) |
| 1931 | 38.3 C (100.9 F) |
| 1932 | 34.4 C (93.9 F) |
| 1933 | 35.6 C (96.1 F) |
| 1934 | 33.9 C (93.0 F) |
| 1935 | 35.6 C (96.1 F) |
| 1936 | 38.9 C (102.0 F) |
| 1937 | 36.1 C (97.0 F) |
| 1938 | 35.6 C (96.1 F) |
| 1939 | 37.2 C (99.0 F) |
| 1940 | 34.4 C (93.9 F) |
| 1941 | 36.7 C (98.1 F) |
| 1942 | 32.8 C (91.0 F) |
| 1943 | 31.7 C (89.1 F) |
| 1944 | 33.9 C (93.0 F) |
| 1945 | 31.1 C (88.0 F) |
| 1946 | 31.7 C (89.1 F) |
| 1947 | 33.3 C (91.9 F) |
| 1948 | 35.6 C (96.1 F) |
| 1949 | 33.3 C (91.9 F) |
| 1950 | 29.4 C (84.9 F) |
| 1951 | 30.0 C (86.0 F) |
| 1952 | 32.8 C (91.0 F) |
| 1953 | 34.4 C (93.9 F) |
| 1954 | 31.1 C (88.0 F) |
| 1955 | 34.4 C (93.9 F) |
| 1956 | 31.7 C (89.1 F) |
| 1957 | 33.9 C (93.0 F) |
| 1958 | 30.0 C (86.0 F) |
| 1959 | 34.4 C (93.9 F) |
| 1960 | 31.1 C (88.0 F) |
| 1961 | 31.7 C (89.1 F) |
| 1962 | 31.7 C (89.1 F) |
| 1963 | 33.3 C (91.9 F) |
| 1964 | 31.1 C (88.0 F) |
| 1965 | 32.8 C (91.0 F) |
| 1966 | 33.9 C (93.0 F) |
| 1967 | 30.6 C (87.1 F) |
| 1968 | 32.8 C (91.0 F) |
| 1969 | 32.8 C (91.0 F) |
| 1970 | 32.2 C (90.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1866 | -25.0 C (-13.0 F) |
| 1867 | -31.7 C (-25.1 F) |
| 1868 | -31.7 C (-25.1 F) |
| 1869 | -28.9 C (-20.0 F) |
| 1870 | -31.7 C (-25.1 F) |
| 1871 | -39.4 C (-38.9 F) |
| 1872 | -30.6 C (-23.1 F) |
| 1873 | -32.8 C (-27.0 F) |
| 1874 | -29.4 C (-20.9 F) |
| 1877 | -30.6 C (-23.1 F) |
| 1878 | -28.9 C (-20.0 F) |
| 1879 | -31.7 C (-25.1 F) |
| 1880 | -23.9 C (-11.0 F) |
| 1881 | -28.3 C (-18.9 F) |
| 1882 | -36.1 C (-33.0 F) |
| 1883 | -30.6 C (-23.1 F) |
| 1884 | -31.7 C (-25.1 F) |
| 1885 | -30.0 C (-22.0 F) |
| 1886 | -33.3 C (-27.9 F) |
| 1887 | -35.0 C (-31.0 F) |
| 1890 | n/a |
| 1891 | -21.7 C (-7.1 F) |
| 1892 | -36.7 C (-34.1 F) |
| 1893 | -32.8 C (-27.0 F) |
| 1894 | -28.9 C (-20.0 F) |
| 1895 | -33.9 C (-29.0 F) |
| 1896 | -38.9 C (-38.0 F) |
| 1897 | -27.8 C (-18.0 F) |
| 1898 | -30.0 C (-22.0 F) |
| 1899 | -27.8 C (-18.0 F) |
| 1900 | -33.9 C (-29.0 F) |
| 1901 | -28.3 C (-18.9 F) |
| 1902 | -26.7 C (-16.1 F) |
| 1903 | -30.6 C (-23.1 F) |
| 1904 | -34.4 C (-29.9 F) |
| 1905 | -30.0 C (-22.0 F) |
| 1906 | -32.2 C (-26.0 F) |
| 1907 | -28.9 C (-20.0 F) |
| 1908 | -33.9 C (-29.0 F) |
| 1909 | -27.8 C (-18.0 F) |
| 1910 | -32.2 C (-26.0 F) |
| 1911 | -26.1 C (-15.0 F) |
| 1912 | -34.4 C (-29.9 F) |
| 1913 | -27.2 C (-17.0 F) |
| 1914 | -35.6 C (-32.1 F) |
| 1915 | -33.3 C (-27.9 F) |
| 1916 | -27.8 C (-18.0 F) |
| 1917 | -32.8 C (-27.0 F) |
| 1918 | -33.9 C (-29.0 F) |
| 1919 | -28.3 C (-18.9 F) |
| 1920 | -33.3 C (-27.9 F) |
| 1921 | -28.3 C (-18.9 F) |
| 1922 | -30.0 C (-22.0 F) |
| 1923 | -32.2 C (-26.0 F) |
| 1924 | -33.3 C (-27.9 F) |
| 1925 | -37.8 C (-36.0 F) |
| 1926 | -28.9 C (-20.0 F) |
| 1927 | -31.7 C (-25.1 F) |
| 1928 | -27.2 C (-17.0 F) |
| 1929 | -25.6 C (-14.1 F) |
| 1930 | -32.2 C (-26.0 F) |
| 1931 | -27.2 C (-17.0 F) |
| 1932 | -23.9 C (-11.0 F) |
| 1933 | -36.7 C (-34.1 F) |
| 1934 | -35.6 C (-32.1 F) |
| 1935 | -33.3 C (-27.9 F) |
| 1936 | -25.6 C (-14.1 F) |
| 1937 | -18.9 C (-2.0 F) |
| 1938 | -26.1 C (-15.0 F) |
| 1939 | -28.3 C (-18.9 F) |
| 1940 | -28.9 C (-20.0 F) |
| 1941 | -25.6 C (-14.1 F) |
| 1942 | -28.3 C (-18.9 F) |
| 1943 | -34.4 C (-29.9 F) |
| 1944 | -26.7 C (-16.1 F) |
| 1945 | -33.9 C (-29.0 F) |
| 1946 | -28.9 C (-20.0 F) |
| 1947 | -28.3 C (-18.9 F) |
| 1948 | -33.3 C (-27.9 F) |
| 1949 | -23.9 C (-11.0 F) |
| 1950 | -31.1 C (-24.0 F) |
| 1951 | -33.3 C (-27.9 F) |
| 1952 | -28.3 C (-18.9 F) |
| 1953 | -21.1 C (-6.0 F) |
| 1954 | -27.8 C (-18.0 F) |
| 1955 | -27.2 C (-17.0 F) |
| 1956 | -26.7 C (-16.1 F) |
| 1957 | -32.2 C (-26.0 F) |
| 1958 | -31.1 C (-24.0 F) |
| 1959 | -30.6 C (-23.1 F) |
| 1960 | -30.0 C (-22.0 F) |
| 1961 | -27.2 C (-17.0 F) |
| 1962 | -33.9 C (-29.0 F) |
| 1963 | -29.4 C (-20.9 F) |
| 1964 | -23.3 C (-9.9 F) |
| 1965 | -28.3 C (-18.9 F) |
| 1966 | -25.0 C (-13.0 F) |
| 1967 | -30.0 C (-22.0 F) |
| 1968 | -34.4 C (-29.9 F) |
| 1969 | -24.4 C (-11.9 F) |
| 1970 | -31.7 C (-25.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1866 | 48.8 mm (1.9 in) |
| 1867 | 36.1 mm (1.4 in) |
| 1868 | 51.6 mm (2.0 in) |
| 1869 | 75.9 mm (3.0 in) |
| 1870 | 57.9 mm (2.3 in) |
| 1871 | 61.5 mm (2.4 in) |
| 1872 | 43.4 mm (1.7 in) |
| 1873 | 23.9 mm (0.9 in) |
| 1874 | 22.1 mm (0.9 in) |
| 1877 | 38.4 mm (1.5 in) |
| 1878 | 81.3 mm (3.2 in) |
| 1879 | 34.8 mm (1.4 in) |
| 1880 | 78.7 mm (3.1 in) |
| 1881 | 45.7 mm (1.8 in) |
| 1882 | 50.8 mm (2.0 in) |
| 1883 | 27.9 mm (1.1 in) |
| 1884 | 39.4 mm (1.6 in) |
| 1885 | 37.8 mm (1.5 in) |
| 1886 | 31.5 mm (1.2 in) |
| 1887 | 26.7 mm (1.1 in) |
| 1890 | 24.9 mm (1.0 in) |
| 1891 | 38.1 mm (1.5 in) |
| 1892 | 44.5 mm (1.8 in) |
| 1893 | 65.3 mm (2.6 in) |
| 1894 | 66.8 mm (2.6 in) |
| 1895 | 31.8 mm (1.3 in) |
| 1896 | 50.8 mm (2.0 in) |
| 1897 | 56.6 mm (2.2 in) |
| 1898 | 37.6 mm (1.5 in) |
| 1899 | 33.8 mm (1.3 in) |
| 1900 | 41.9 mm (1.6 in) |
| 1901 | 43.2 mm (1.7 in) |
| 1902 | 66.0 mm (2.6 in) |
| 1903 | 37.6 mm (1.5 in) |
| 1904 | 50.3 mm (2.0 in) |
| 1905 | 35.6 mm (1.4 in) |
| 1906 | 59.4 mm (2.3 in) |
| 1907 | 31.8 mm (1.3 in) |
| 1908 | 47.0 mm (1.9 in) |
| 1909 | 58.4 mm (2.3 in) |
| 1910 | 38.1 mm (1.5 in) |
| 1911 | 57.2 mm (2.3 in) |
| 1912 | 48.0 mm (1.9 in) |
| 1913 | 57.2 mm (2.3 in) |
| 1914 | 34.5 mm (1.4 in) |
| 1915 | 54.9 mm (2.2 in) |
| 1916 | 31.8 mm (1.3 in) |
| 1917 | 37.1 mm (1.5 in) |
| 1918 | 83.6 mm (3.3 in) |
| 1919 | 30.5 mm (1.2 in) |
| 1920 | 32.3 mm (1.3 in) |
| 1921 | 39.4 mm (1.6 in) |
| 1922 | 39.4 mm (1.6 in) |
| 1923 | 53.8 mm (2.1 in) |
| 1924 | 48.3 mm (1.9 in) |
| 1925 | 39.6 mm (1.6 in) |
| 1926 | 38.4 mm (1.5 in) |
| 1927 | 58.9 mm (2.3 in) |
| 1928 | 34.8 mm (1.4 in) |
| 1929 | 46.0 mm (1.8 in) |
| 1930 | 28.4 mm (1.1 in) |
| 1931 | 50.3 mm (2.0 in) |
| 1932 | 33.3 mm (1.3 in) |
| 1933 | 36.8 mm (1.4 in) |
| 1934 | 57.7 mm (2.3 in) |
| 1935 | 47.5 mm (1.9 in) |
| 1936 | 39.4 mm (1.6 in) |
| 1937 | 37.6 mm (1.5 in) |
| 1938 | 77.7 mm (3.1 in) |
| 1939 | 30.0 mm (1.2 in) |
| 1940 | 37.8 mm (1.5 in) |
| 1941 | 87.1 mm (3.4 in) |
| 1942 | 50.0 mm (2.0 in) |
| 1943 | 52.6 mm (2.1 in) |
| 1944 | 41.4 mm (1.6 in) |
| 1945 | 30.7 mm (1.2 in) |
| 1946 | 29.7 mm (1.2 in) |
| 1947 | 30.0 mm (1.2 in) |
| 1948 | 32.8 mm (1.3 in) |
| 1949 | 31.8 mm (1.3 in) |
| 1950 | 38.1 mm (1.5 in) |
| 1951 | 67.6 mm (2.7 in) |
| 1952 | 64.3 mm (2.5 in) |
| 1953 | 55.6 mm (2.2 in) |
| 1954 | 45.7 mm (1.8 in) |
| 1955 | 46.0 mm (1.8 in) |
| 1956 | 31.2 mm (1.2 in) |
| 1957 | 65.5 mm (2.6 in) |
| 1958 | 31.8 mm (1.3 in) |
| 1959 | 27.4 mm (1.1 in) |
| 1960 | 33.8 mm (1.3 in) |
| 1961 | 26.4 mm (1.0 in) |
| 1962 | 42.9 mm (1.7 in) |
| 1963 | 42.7 mm (1.7 in) |
| 1964 | 22.4 mm (0.9 in) |
| 1965 | 57.4 mm (2.3 in) |
| 1966 | 33.3 mm (1.3 in) |
| 1967 | 77.2 mm (3.0 in) |
| 1968 | 30.5 mm (1.2 in) |
| 1969 | 74.4 mm (2.9 in) |
| 1970 | 27.9 mm (1.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1866 | 52.4 mm (2.1 in) |
| 1867 | 47.0 mm (1.9 in) |
| 1868 | 55.4 mm (2.2 in) |
| 1869 | 104.1 mm (4.1 in) |
| 1870 | 66.8 mm (2.6 in) |
| 1871 | 61.5 mm (2.4 in) |
| 1872 | 55.8 mm (2.2 in) |
| 1873 | 54.6 mm (2.1 in) |
| 1874 | 29.8 mm (1.2 in) |
| 1877 | 57.1 mm (2.2 in) |
| 1878 | 115.3 mm (4.5 in) |
| 1879 | 90.2 mm (3.6 in) |
| 1880 | 81.3 mm (3.2 in) |
| 1881 | 58.4 mm (2.3 in) |
| 1882 | 59.8 mm (2.4 in) |
| 1883 | 45.7 mm (1.8 in) |
| 1884 | 48.7 mm (1.9 in) |
| 1885 | 60.5 mm (2.4 in) |
| 1886 | 55.3 mm (2.2 in) |
| 1887 | 45.8 mm (1.8 in) |
| 1890 | 32.2 mm (1.3 in) |
| 1891 | 53.7 mm (2.1 in) |
| 1892 | 58.8 mm (2.3 in) |
| 1893 | 78.6 mm (3.1 in) |
| 1894 | 133.6 mm (5.3 in) |
| 1895 | 55.5 mm (2.2 in) |
| 1896 | 70.4 mm (2.8 in) |
| 1897 | 100.1 mm (3.9 in) |
| 1898 | 62.2 mm (2.4 in) |
| 1899 | 79.5 mm (3.1 in) |
| 1900 | 65.0 mm (2.6 in) |
| 1901 | 80.9 mm (3.2 in) |
| 1902 | 134.4 mm (5.3 in) |
| 1903 | 51.6 mm (2.0 in) |
| 1904 | 73.7 mm (2.9 in) |
| 1905 | 53.4 mm (2.1 in) |
| 1906 | 122.9 mm (4.8 in) |
| 1907 | 54.8 mm (2.2 in) |
| 1908 | 56.7 mm (2.2 in) |
| 1909 | 63.2 mm (2.5 in) |
| 1910 | 44.5 mm (1.8 in) |
| 1911 | 74.9 mm (2.9 in) |
| 1912 | 86.4 mm (3.4 in) |
| 1913 | 78.0 mm (3.1 in) |
| 1914 | 69.5 mm (2.7 in) |
| 1915 | 122.2 mm (4.8 in) |
| 1916 | 69.4 mm (2.7 in) |
| 1917 | 49.1 mm (1.9 in) |
| 1918 | 90.0 mm (3.5 in) |
| 1919 | 58.0 mm (2.3 in) |
| 1920 | 54.5 mm (2.1 in) |
| 1921 | 62.8 mm (2.5 in) |
| 1922 | 61.7 mm (2.4 in) |
| 1923 | 92.2 mm (3.6 in) |
| 1924 | 68.3 mm (2.7 in) |
| 1925 | 63.3 mm (2.5 in) |
| 1926 | 52.6 mm (2.1 in) |
| 1927 | 70.4 mm (2.8 in) |
| 1928 | 63.0 mm (2.5 in) |
| 1929 | 57.7 mm (2.3 in) |
| 1930 | 49.4 mm (1.9 in) |
| 1931 | 57.1 mm (2.2 in) |
| 1932 | 55.6 mm (2.2 in) |
| 1933 | 42.4 mm (1.7 in) |
| 1934 | 76.7 mm (3.0 in) |
| 1935 | 103.4 mm (4.1 in) |
| 1936 | 68.6 mm (2.7 in) |
| 1937 | 48.8 mm (1.9 in) |
| 1938 | 111.4 mm (4.4 in) |
| 1939 | 45.7 mm (1.8 in) |
| 1940 | 74.1 mm (2.9 in) |
| 1941 | 88.9 mm (3.5 in) |
| 1942 | 72.3 mm (2.8 in) |
| 1943 | 61.7 mm (2.4 in) |
| 1944 | 42.9 mm (1.7 in) |
| 1945 | 58.2 mm (2.3 in) |
| 1946 | 54.6 mm (2.1 in) |
| 1947 | 50.3 mm (2.0 in) |
| 1948 | 46.7 mm (1.8 in) |
| 1949 | 51.2 mm (2.0 in) |
| 1950 | 48.0 mm (1.9 in) |
| 1951 | 83.1 mm (3.3 in) |
| 1952 | 91.0 mm (3.6 in) |
| 1953 | 67.8 mm (2.7 in) |
| 1954 | 66.0 mm (2.6 in) |
| 1955 | 119.9 mm (4.7 in) |
| 1956 | 76.7 mm (3.0 in) |
| 1957 | 86.0 mm (3.4 in) |
| 1958 | 41.2 mm (1.6 in) |
| 1959 | 45.9 mm (1.8 in) |
| 1960 | 80.8 mm (3.2 in) |
| 1961 | 41.7 mm (1.6 in) |
| 1962 | 52.8 mm (2.1 in) |
| 1963 | 55.4 mm (2.2 in) |
| 1964 | 45.1 mm (1.8 in) |
| 1965 | 83.6 mm (3.3 in) |
| 1966 | 70.2 mm (2.8 in) |
| 1967 | 94.0 mm (3.7 in) |
| 1968 | 51.1 mm (2.0 in) |
| 1969 | 86.1 mm (3.4 in) |
| 1970 | 34.1 mm (1.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1866 | 13 days |
| 1867 | 13 days |
| 1868 | 20 days |
| 1869 | 11 days |
| 1870 | 15 days |
| 1871 | 19 days |
| 1872 | 20 days |
| 1873 | 16 days |
| 1874 | 6 days |
| 1877 | 20 days |
| 1878 | 27 days |
| 1879 | 24 days |
| 1880 | 13 days |
| 1881 | 20 days |
| 1882 | 20 days |
| 1883 | 16 days |
| 1884 | 20 days |
| 1885 | 11 days |
| 1886 | 18 days |
| 1887 | 18 days |
| 1890 | 6 days |
| 1891 | 18 days |
| 1892 | 22 days |
| 1893 | 10 days |
| 1894 | 15 days |
| 1895 | 18 days |
| 1896 | 17 days |
| 1897 | 15 days |
| 1898 | 17 days |
| 1899 | 19 days |
| 1900 | 12 days |
| 1901 | 13 days |
| 1902 | 15 days |
| 1903 | 23 days |
| 1904 | 29 days |
| 1905 | 12 days |
| 1906 | 20 days |
| 1907 | 15 days |
| 1908 | 18 days |
| 1909 | 17 days |
| 1910 | 21 days |
| 1911 | 23 days |
| 1912 | 18 days |
| 1913 | 20 days |
| 1914 | 22 days |
| 1915 | 20 days |
| 1916 | 14 days |
| 1917 | 21 days |
| 1918 | 16 days |
| 1919 | 18 days |
| 1920 | 18 days |
| 1921 | 13 days |
| 1922 | 17 days |
| 1923 | 14 days |
| 1924 | 24 days |
| 1925 | 22 days |
| 1926 | 13 days |
| 1927 | 20 days |
| 1928 | 13 days |
| 1929 | 17 days |
| 1930 | 20 days |
| 1931 | 15 days |
| 1932 | 13 days |
| 1933 | 11 days |
| 1934 | 17 days |
| 1935 | 23 days |
| 1936 | 25 days |
| 1937 | 13 days |
| 1938 | 14 days |
| 1939 | 18 days |
| 1940 | 11 days |
| 1941 | 16 days |
| 1942 | 13 days |
| 1943 | 18 days |
| 1944 | 23 days |
| 1945 | 13 days |
| 1946 | 21 days |
| 1947 | 23 days |
| 1948 | 21 days |
| 1949 | 18 days |
| 1950 | 19 days |
| 1951 | 11 days |
| 1952 | 18 days |
| 1953 | 16 days |
| 1954 | 13 days |
| 1955 | 17 days |
| 1956 | 18 days |
| 1957 | 23 days |
| 1958 | 19 days |
| 1959 | 16 days |
| 1960 | 21 days |
| 1961 | 19 days |
| 1962 | 16 days |
| 1963 | 27 days |
| 1964 | 19 days |
| 1965 | 14 days |
| 1966 | 21 days |
| 1967 | 21 days |
| 1968 | 20 days |
| 1969 | 28 days |
| 1970 | 22 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
83 years with a frostAcross 83 years with a frost, the median last spring frost at Peterborough falls on 13 May and the median first autumn frost on 28 September, which leaves a median of 136 days between them.
In 1936 to 1970 the median growing season was 141 days. That is 10 days more than in 1867 to 1910.
Fitted over all years, the growing season changes by +1.8 days per decade at this station.
| Measure | Median, all years | Earliest period (1867 to 1910) | Recent period (1936 to 1970) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 13 May | 15 May | 11 May | 4 days earlier | -0.6 days per decade |
| First autumn frost | 28 September | 24 September | 30 September | 6 days later | +1.2 days per decade |
| Growing days | 136 days | 131 days | 141 days | 10 days more | +1.8 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
88 years, 1867 to 1970A day with at least 42.2 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 103.1 mm (4.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 42.2 mm (1.7 in) | |
| 5 years | 56.2 mm (2.2 in) | |
| 10 years | 66.3 mm (2.6 in) | |
| 25 years | 80.2 mm (3.2 in) | |
| 50 years | 91.3 mm (3.6 in) | |
| 100 years | 103.1 mm (4.1 in) | Longer than the 88 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 88 years of values from 1867 to 1970.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 87.1 mm (3.4 in) in 1941; 83.6 mm (3.3 in) in 1918; 81.3 mm (3.2 in) in 1878.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-17).