Hillsboro Weather Records (USC00473649)
Record envelope, standing records and threshold days for Hillsboro (USC00473649), Wisconsin, United States, with 66 years of record.
Key Facts for Hillsboro
- Hillsboro (USC00473649) is a weather station in Wisconsin, United States at 43.65 latitude and -90.33 longitude, 305 m (1,001 ft) above sea level.
- The station reports from 1893 to 1958, 66 years of record.
- 1,464 records set at Hillsboro still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Hillsboro set a daily record high maximum temperature of 7.8 C (46.0 F) on 28 December 1958.
About the Station
- Location: Wisconsin, United States, 43.65 latitude, -90.33 longitude.
- Elevation: 305 m (1,001 ft).
- Period of record: 1893 to 1958, 66 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 | 13.9 C (57.0 F) | -42.8 C (-45.0 F) | n/a | n/a |
| Feb | 16.7 C (62.1 F) | -42.2 C (-44.0 F) | n/a | n/a |
| Mar | 26.7 C (80.1 F) | -32.2 C (-26.0 F) | n/a | n/a |
| Apr | 35.0 C (95.0 F) | -18.3 C (-0.9 F) | n/a | n/a |
| May | 38.9 C (102.0 F) | -7.8 C (18.0 F) | n/a | n/a |
| Jun | 37.8 C (100.0 F) | -3.9 C (25.0 F) | n/a | n/a |
| Jul | 42.2 C (108.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| Aug | 38.9 C (102.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Sep | 36.7 C (98.1 F) | -8.9 C (16.0 F) | n/a | n/a |
| Oct | 31.1 C (88.0 F) | -20.0 C (-4.0 F) | n/a | n/a |
| Nov | 23.9 C (75.0 F) | -27.2 C (-17.0 F) | n/a | n/a |
| Dec | 16.7 C (62.1 F) | -35.6 C (-32.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 24 |
| 1894 | 55 |
| 1895 | 38 |
| 1896 | 34 |
| 1897 | 30 |
| 1898 | 17 |
| 1899 | 35 |
| 1900 | 19 |
| 1901 | 23 |
| 1902 | 20 |
| 1903 | 16 |
| 1904 | 27 |
| 1905 | 15 |
| 1906 | 18 |
| 1907 | 19 |
| 1908 | 26 |
| 1909 | 28 |
| 1910 | 24 |
| 1911 | 24 |
| 1912 | 29 |
| 1913 | 25 |
| 1914 | 18 |
| 1915 | 26 |
| 1916 | 33 |
| 1917 | 38 |
| 1918 | 25 |
| 1919 | 18 |
| 1920 | 22 |
| 1921 | 19 |
| 1922 | 14 |
| 1923 | 23 |
| 1924 | 23 |
| 1925 | 29 |
| 1926 | 13 |
| 1927 | 17 |
| 1928 | 28 |
| 1929 | 19 |
| 1930 | 34 |
| 1931 | 22 |
| 1932 | 15 |
| 1933 | 21 |
| 1934 | 24 |
| 1935 | 17 |
| 1936 | 45 |
| 1937 | 19 |
| 1938 | 13 |
| 1939 | 15 |
| 1940 | 16 |
| 1941 | 14 |
| 1942 | 22 |
| 1943 | 20 |
| 1944 | 13 |
| 1945 | 11 |
| 1946 | 17 |
| 1947 | 28 |
| 1948 | 27 |
| 1949 | 24 |
| 1950 | 21 |
| 1951 | 26 |
| 1952 | 18 |
| 1953 | 21 |
| 1954 | 9 |
| 1955 | 18 |
| 1956 | 6 |
| 1957 | 9 |
| 1958 | 8 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1926-08-20 | Record daily precipitation | Record daily precipitation 100.3 mm (3.9 in) |
| 1927-09-17 | Record daily precipitation | Record daily precipitation 158.8 mm (6.3 in) |
| 1936-07-14 | Record high maximum temperature | Record high maximum temperature 42.2 C (108.0 F) |
| 1942-01-01 | Record daily snowfall | Record daily snowfall 38.1 cm (15.0 in) |
| 1947-08-20 | Record high minimum temperature | Record high minimum temperature 26.7 C (80.1 F) |
Wettest Day of Each Month
Sep: 158.8 mm (6.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 38.1 mm (1.5 in) | 19 January 1907 |
| Feb | 76.2 mm (3.0 in) | 22 February 1922 |
| Mar | 53.3 mm (2.1 in) | 26 March 1906 |
| Apr | 68.1 mm (2.7 in) | 18 April 1941 |
| May | 67.3 mm (2.6 in) | 18 May 1908 |
| Jun | 83.8 mm (3.3 in) | 1 June 1945 |
| Jul | 94.0 mm (3.7 in) | 21 July 1907 |
| Aug | 100.3 mm (3.9 in) | 20 August 1926 |
| Sep | 158.8 mm (6.3 in) | 17 September 1927 |
| Oct | 64.8 mm (2.6 in) | 19 October 1937 |
| Nov | 62.2 mm (2.4 in) | 1 November 1945 |
| Dec | 38.1 mm (1.5 in) | 24 December 1895 |
Period of Record Coverage
1893 to 1958| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 350 | 96% | Yes |
| 1894 | 356 | 98% | Yes |
| 1895 | 351 | 96% | Yes |
| 1896 | 362 | 99% | Yes |
| 1897 | 359 | 98% | Yes |
| 1898 | 362 | 99% | Yes |
| 1899 | 361 | 99% | Yes |
| 1900 | 359 | 98% | Yes |
| 1901 | 337 | 92% | Yes |
| 1902 | 354 | 97% | Yes |
| 1903 | 348 | 95% | Yes |
| 1904 | 354 | 97% | Yes |
| 1905 | 361 | 99% | Yes |
| 1906 | 365 | 100% | Yes |
| 1907 | 364 | 100% | Yes |
| 1908 | 359 | 98% | Yes |
| 1909 | 359 | 98% | Yes |
| 1910 | 306 | 84% | No |
| 1911 | 338 | 93% | Yes |
| 1912 | 350 | 96% | Yes |
| 1913 | 338 | 93% | Yes |
| 1914 | 364 | 100% | Yes |
| 1915 | 364 | 100% | Yes |
| 1916 | 364 | 99% | Yes |
| 1917 | 363 | 99% | Yes |
| 1918 | 360 | 99% | Yes |
| 1919 | 351 | 96% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 352 | 96% | Yes |
| 1922 | 364 | 100% | Yes |
| 1923 | 365 | 100% | Yes |
| 1924 | 366 | 100% | Yes |
| 1925 | 362 | 99% | Yes |
| 1926 | 364 | 100% | Yes |
| 1927 | 311 | 85% | No |
| 1928 | 362 | 99% | Yes |
| 1929 | 362 | 99% | Yes |
| 1930 | 363 | 99% | Yes |
| 1931 | 359 | 98% | Yes |
| 1932 | 342 | 93% | Yes |
| 1933 | 364 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 358 | 98% | Yes |
| 1936 | 363 | 99% | Yes |
| 1937 | 353 | 97% | Yes |
| 1938 | 348 | 95% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 361 | 99% | Yes |
| 1941 | 357 | 98% | Yes |
| 1942 | 363 | 99% | Yes |
| 1943 | 362 | 99% | Yes |
| 1944 | 360 | 98% | Yes |
| 1945 | 361 | 99% | Yes |
| 1946 | 359 | 98% | Yes |
| 1947 | 357 | 98% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 361 | 99% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 363 | 99% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 363 | 99% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 364 | 100% | Yes |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 28 December 1958 | Hillsboro, US | daily high max | 7.8 C (46.0 F) | 0.6 C (1.1 F) | 45 years | 20 of 100 (Routine) |
| 11 December 1958 | Hillsboro, US | daily low max (Tie) | -11.1 C (12.0 F) | tie | 31 years | 3 of 100 (Routine) |
| 8 December 1958 | Hillsboro, US | daily low max | -13.3 C (8.1 F) | 0.5 C (0.9 F) | 48 years | 20 of 100 (Routine) |
| 6 December 1958 | Hillsboro, US | daily low max (Tie) | -9.4 C (15.1 F) | tie | 40 years | 4 of 100 (Routine) |
| 14 November 1958 | Hillsboro, US | daily high min | 13.3 C (55.9 F) | 3.3 C (5.9 F) | 13 years | 15 of 100 (Routine) |
| 7 October 1958 | Hillsboro, US | daily high min | 15.6 C (60.1 F) | 2.8 C (5.0 F) | 11 years | 13 of 100 (Routine) |
| 25 August 1958 | Hillsboro, US | daily low max (Tie) | 21.1 C (70.0 F) | tie | 20 years | 3 of 100 (Routine) |
| 6 June 1958 | Hillsboro, US | daily low min (Tie) | 1.7 C (35.1 F) | tie | 63 years | 6 of 100 (Routine) |
| 29 April 1958 | Hillsboro, US | daily low min (Tie) | -4.4 C (24.1 F) | tie | 36 years | 4 of 100 (Routine) |
| 18 April 1958 | Hillsboro, US | daily high max (Tie) | 26.7 C (80.1 F) | tie | 43 years | 4 of 100 (Routine) |
| 17 April 1958 | Hillsboro, US | daily high max | 27.8 C (82.0 F) | 2.2 C (4.0 F) | 31 years | 18 of 100 (Routine) |
| 6 April 1958 | Hillsboro, US | daily rain | 39.1 mm (1.5 in) | 13.7 mm (0.5 in) | 28 years | 28 of 100 (Routine) |
| 27 February 1958 | Hillsboro, US | daily high min | 2.2 C (36.0 F) | 1.1 C (2.0 F) | 62 years | 25 of 100 (Routine) |
| 26 February 1958 | Hillsboro, US | daily high max | 13.3 C (55.9 F) | 1.6 C (2.9 F) | 61 years | 26 of 100 (Routine) |
| 26 February 1958 | Hillsboro, US | daily high min | 1.7 C (35.1 F) | 0.6 C (1.1 F) | 14 years | 10 of 100 (Routine) |
| 16 February 1958 | Hillsboro, US | daily low max (Tie) | -16.7 C (1.9 F) | tie | 22 years | 3 of 100 (Routine) |
| 23 December 1957 | Hillsboro, US | daily high max | 11.1 C (52.0 F) | 1.7 C (3.1 F) | 52 years | 23 of 100 (Routine) |
| 22 December 1957 | Hillsboro, US | daily high max | 11.1 C (52.0 F) | 2.8 C (5.0 F) | 56 years | 27 of 100 (Routine) |
| 19 December 1957 | Hillsboro, US | daily rain | 13.2 mm (0.5 in) | 5.6 mm (0.22 in) | 58 years | 20 of 100 (Routine) |
| 19 December 1957 | Hillsboro, US | daily high min (Tie) | 0.0 C (32.0 F) | tie | 34 years | 4 of 100 (Routine) |
Climate Trend
51 complete years, 1893 to 1957| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1893 | 4.9 C | -1.97 C |
| 1894 | 7.7 C | +0.83 C |
| 1895 | 6.2 C | -0.68 C |
| 1896 | 6.9 C | +0.05 C |
| 1897 | 6.6 C | -0.30 C |
| 1899 | 6.5 C | -0.39 C |
| 1906 | 6.9 C | +0.04 C |
| 1907 | 5.8 C | -1.05 C |
| 1909 | 5.8 C | -1.04 C |
| 1912 | 5.1 C | -1.78 C |
| 1914 | 6.3 C | -0.53 C |
| 1915 | 5.6 C | -1.27 C |
| 1916 | 5.2 C | -1.68 C |
| 1917 | 3.4 C | -3.44 C |
| 1918 | 5.8 C | -1.03 C |
| 1919 | 6.2 C | -0.68 C |
| 1920 | 5.6 C | -1.30 C |
| 1921 | 8.3 C | +1.38 C |
| 1922 | 7.5 C | +0.66 C |
| 1923 | 6.8 C | -0.04 C |
| 1924 | 5.0 C | -1.90 C |
| 1925 | 6.5 C | -0.38 C |
| 1926 | 5.8 C | -1.06 C |
| 1928 | 7.0 C | +0.11 C |
| 1929 | 5.1 C | -1.82 C |
| 1930 | 7.1 C | +0.27 C |
| 1931 | 9.0 C | +2.09 C |
| 1933 | 8.1 C | +1.20 C |
| 1934 | 8.0 C | +1.14 C |
| 1935 | 6.7 C | -0.14 C |
| 1936 | 6.5 C | -0.40 C |
| 1937 | 6.5 C | -0.39 C |
| 1939 | 8.2 C | +1.35 C |
| 1940 | 6.5 C | -0.39 C |
| 1941 | 8.3 C | +1.44 C |
| 1942 | 7.2 C | +0.29 C |
| 1943 | 6.5 C | -0.39 C |
| 1944 | 7.8 C | +0.90 C |
| 1945 | 6.5 C | -0.39 C |
| 1946 | 8.6 C | +1.69 C |
| 1947 | 7.6 C | +0.72 C |
| 1948 | 8.1 C | +1.21 C |
| 1949 | 8.7 C | +1.79 C |
| 1950 | 6.5 C | -0.38 C |
| 1951 | 6.4 C | -0.47 C |
| 1952 | 8.1 C | +1.27 C |
| 1953 | 8.9 C | +2.03 C |
| 1954 | 8.6 C | +1.77 C |
| 1955 | 8.4 C | +1.56 C |
| 1956 | 7.9 C | +1.05 C |
| 1957 | 7.5 C | +0.63 C |
The annual mean temperature here has risen by 0.4 C (0.2 to 0.5) per decade over 1893 to 1957. In Fahrenheit: 0.6 F (0.3 to 0.9) per decade. The slope is a straight line fitted to 51 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.4 C (0.2 to 0.5) per decade | 0.6 F (0.3 to 0.9) per decade | 1893 to 1957 | 51 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.4) per decade | 0.4 F (0.1 to 0.7) per decade | 1893 to 1957 | 51 | Rise |
| Mean daily minimum | 0.5 C (0.3 to 0.6) per decade | 0.8 F (0.5 to 1.2) per decade | 1893 to 1957 | 51 | 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
1893 to 1958| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.2 C (108.0 F) | 1936 | 35.0 C (95.0 F) | 66 |
| Coldest night (TNn) | -42.8 C (-45.0 F) | 1912 | -33.3 C (-27.9 F) | 66 |
| Wettest day (Rx1day) | 158.8 mm (6.3 in) | 1927 | 56.6 mm (2.2 in) | 66 |
| Wettest five days (Rx5day) | 161.6 mm (6.4 in) | 1935 | 84.2 mm (3.3 in) | 66 |
| Longest dry spell (CDD) | 37 days | 1919 | 23 days | 66 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 33.3 C (91.9 F) |
| 1894 | 38.9 C (102.0 F) |
| 1895 | 35.6 C (96.1 F) |
| 1896 | 36.7 C (98.1 F) |
| 1897 | 35.0 C (95.0 F) |
| 1898 | 34.4 C (93.9 F) |
| 1899 | 34.4 C (93.9 F) |
| 1900 | 35.0 C (95.0 F) |
| 1901 | 41.1 C (106.0 F) |
| 1902 | 32.8 C (91.0 F) |
| 1903 | 32.8 C (91.0 F) |
| 1904 | 34.4 C (93.9 F) |
| 1905 | 35.0 C (95.0 F) |
| 1906 | 34.4 C (93.9 F) |
| 1907 | 33.9 C (93.0 F) |
| 1908 | 36.1 C (97.0 F) |
| 1909 | 36.1 C (97.0 F) |
| 1910 | 36.7 C (98.1 F) |
| 1911 | 36.7 C (98.1 F) |
| 1912 | 34.4 C (93.9 F) |
| 1913 | 35.0 C (95.0 F) |
| 1914 | 33.3 C (91.9 F) |
| 1915 | 32.2 C (90.0 F) |
| 1916 | 38.3 C (100.9 F) |
| 1917 | 34.4 C (93.9 F) |
| 1918 | 34.4 C (93.9 F) |
| 1919 | 33.3 C (91.9 F) |
| 1920 | 32.8 C (91.0 F) |
| 1921 | 36.7 C (98.1 F) |
| 1922 | 36.7 C (98.1 F) |
| 1923 | 35.6 C (96.1 F) |
| 1924 | 31.7 C (89.1 F) |
| 1925 | 34.4 C (93.9 F) |
| 1926 | 37.2 C (99.0 F) |
| 1927 | 32.8 C (91.0 F) |
| 1928 | 33.9 C (93.0 F) |
| 1929 | 33.3 C (91.9 F) |
| 1930 | 36.7 C (98.1 F) |
| 1931 | 36.7 C (98.1 F) |
| 1932 | 33.9 C (93.0 F) |
| 1933 | 36.7 C (98.1 F) |
| 1934 | 38.9 C (102.0 F) |
| 1935 | 34.4 C (93.9 F) |
| 1936 | 42.2 C (108.0 F) |
| 1937 | 38.9 C (102.0 F) |
| 1938 | 32.8 C (91.0 F) |
| 1939 | 36.7 C (98.1 F) |
| 1940 | 35.6 C (96.1 F) |
| 1941 | 36.7 C (98.1 F) |
| 1942 | 33.3 C (91.9 F) |
| 1943 | 33.3 C (91.9 F) |
| 1944 | 34.4 C (93.9 F) |
| 1945 | 33.9 C (93.0 F) |
| 1946 | 33.9 C (93.0 F) |
| 1947 | 36.1 C (97.0 F) |
| 1948 | 38.9 C (102.0 F) |
| 1949 | 35.6 C (96.1 F) |
| 1950 | 32.8 C (91.0 F) |
| 1951 | 32.2 C (90.0 F) |
| 1952 | 35.0 C (95.0 F) |
| 1953 | 36.7 C (98.1 F) |
| 1954 | 35.0 C (95.0 F) |
| 1955 | 38.9 C (102.0 F) |
| 1956 | 35.0 C (95.0 F) |
| 1957 | 33.3 C (91.9 F) |
| 1958 | 33.9 C (93.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -35.6 C (-32.1 F) |
| 1894 | -28.9 C (-20.0 F) |
| 1895 | -37.2 C (-35.0 F) |
| 1896 | -25.0 C (-13.0 F) |
| 1897 | -28.9 C (-20.0 F) |
| 1898 | -27.8 C (-18.0 F) |
| 1899 | -40.0 C (-40.0 F) |
| 1900 | -28.9 C (-20.0 F) |
| 1901 | -32.8 C (-27.0 F) |
| 1902 | -35.0 C (-31.0 F) |
| 1903 | -34.4 C (-29.9 F) |
| 1904 | -39.4 C (-38.9 F) |
| 1905 | -37.2 C (-35.0 F) |
| 1906 | -26.7 C (-16.1 F) |
| 1907 | -37.2 C (-35.0 F) |
| 1908 | -28.3 C (-18.9 F) |
| 1909 | -32.8 C (-27.0 F) |
| 1910 | -38.9 C (-38.0 F) |
| 1911 | -38.3 C (-36.9 F) |
| 1912 | -42.8 C (-45.0 F) |
| 1913 | -31.7 C (-25.1 F) |
| 1914 | -35.6 C (-32.1 F) |
| 1915 | -37.8 C (-36.0 F) |
| 1916 | -37.2 C (-35.0 F) |
| 1917 | -38.9 C (-38.0 F) |
| 1918 | -42.2 C (-44.0 F) |
| 1919 | -41.1 C (-42.0 F) |
| 1920 | -33.3 C (-27.9 F) |
| 1921 | -25.0 C (-13.0 F) |
| 1922 | -34.4 C (-29.9 F) |
| 1923 | -30.6 C (-23.1 F) |
| 1924 | -35.6 C (-32.1 F) |
| 1925 | -32.2 C (-26.0 F) |
| 1926 | -31.7 C (-25.1 F) |
| 1927 | -37.2 C (-35.0 F) |
| 1928 | -37.2 C (-35.0 F) |
| 1929 | -41.1 C (-42.0 F) |
| 1930 | -40.0 C (-40.0 F) |
| 1931 | -29.4 C (-20.9 F) |
| 1932 | -34.4 C (-29.9 F) |
| 1933 | -33.3 C (-27.9 F) |
| 1934 | -27.2 C (-17.0 F) |
| 1935 | -33.3 C (-27.9 F) |
| 1936 | -36.7 C (-34.1 F) |
| 1937 | -33.3 C (-27.9 F) |
| 1938 | -26.7 C (-16.1 F) |
| 1939 | -23.9 C (-11.0 F) |
| 1940 | -35.6 C (-32.1 F) |
| 1941 | -26.1 C (-15.0 F) |
| 1942 | -37.8 C (-36.0 F) |
| 1943 | -37.2 C (-35.0 F) |
| 1944 | -27.2 C (-17.0 F) |
| 1945 | -30.0 C (-22.0 F) |
| 1946 | -32.8 C (-27.0 F) |
| 1947 | -33.9 C (-29.0 F) |
| 1948 | -29.4 C (-20.9 F) |
| 1949 | -32.2 C (-26.0 F) |
| 1950 | -32.2 C (-26.0 F) |
| 1951 | -42.2 C (-44.0 F) |
| 1952 | -29.4 C (-20.9 F) |
| 1953 | -25.6 C (-14.1 F) |
| 1954 | -27.8 C (-18.0 F) |
| 1955 | -28.3 C (-18.9 F) |
| 1956 | -28.9 C (-20.0 F) |
| 1957 | -28.9 C (-20.0 F) |
| 1958 | -28.9 C (-20.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 39.6 mm (1.6 in) |
| 1894 | 73.2 mm (2.9 in) |
| 1895 | 47.8 mm (1.9 in) |
| 1896 | 55.9 mm (2.2 in) |
| 1897 | 42.9 mm (1.7 in) |
| 1898 | 51.3 mm (2.0 in) |
| 1899 | 62.2 mm (2.4 in) |
| 1900 | 52.3 mm (2.1 in) |
| 1901 | 64.8 mm (2.6 in) |
| 1902 | 57.2 mm (2.3 in) |
| 1903 | 69.9 mm (2.8 in) |
| 1904 | 47.5 mm (1.9 in) |
| 1905 | 42.7 mm (1.7 in) |
| 1906 | 63.5 mm (2.5 in) |
| 1907 | 94.0 mm (3.7 in) |
| 1908 | 67.3 mm (2.6 in) |
| 1909 | 76.2 mm (3.0 in) |
| 1910 | 47.0 mm (1.9 in) |
| 1911 | 45.5 mm (1.8 in) |
| 1912 | 59.2 mm (2.3 in) |
| 1913 | 65.5 mm (2.6 in) |
| 1914 | 74.2 mm (2.9 in) |
| 1915 | 43.9 mm (1.7 in) |
| 1916 | 91.4 mm (3.6 in) |
| 1917 | 51.1 mm (2.0 in) |
| 1918 | 49.8 mm (2.0 in) |
| 1919 | 54.6 mm (2.1 in) |
| 1920 | 49.8 mm (2.0 in) |
| 1921 | 76.2 mm (3.0 in) |
| 1922 | 76.2 mm (3.0 in) |
| 1923 | 50.8 mm (2.0 in) |
| 1924 | 48.3 mm (1.9 in) |
| 1925 | 82.6 mm (3.3 in) |
| 1926 | 100.3 mm (3.9 in) |
| 1927 | 158.8 mm (6.3 in) |
| 1928 | 63.5 mm (2.5 in) |
| 1929 | 48.3 mm (1.9 in) |
| 1930 | 48.3 mm (1.9 in) |
| 1931 | 40.6 mm (1.6 in) |
| 1932 | 67.6 mm (2.7 in) |
| 1933 | 71.6 mm (2.8 in) |
| 1934 | 90.2 mm (3.6 in) |
| 1935 | 99.1 mm (3.9 in) |
| 1936 | 43.2 mm (1.7 in) |
| 1937 | 64.8 mm (2.6 in) |
| 1938 | 59.7 mm (2.4 in) |
| 1939 | 50.8 mm (2.0 in) |
| 1940 | 67.1 mm (2.6 in) |
| 1941 | 68.1 mm (2.7 in) |
| 1942 | 43.2 mm (1.7 in) |
| 1943 | 71.4 mm (2.8 in) |
| 1944 | 34.3 mm (1.4 in) |
| 1945 | 83.8 mm (3.3 in) |
| 1946 | 77.0 mm (3.0 in) |
| 1947 | 58.9 mm (2.3 in) |
| 1948 | 31.5 mm (1.2 in) |
| 1949 | 43.9 mm (1.7 in) |
| 1950 | 66.0 mm (2.6 in) |
| 1951 | 71.4 mm (2.8 in) |
| 1952 | 39.1 mm (1.5 in) |
| 1953 | 37.1 mm (1.5 in) |
| 1954 | 42.2 mm (1.7 in) |
| 1955 | 38.6 mm (1.5 in) |
| 1956 | 36.8 mm (1.4 in) |
| 1957 | 43.9 mm (1.7 in) |
| 1958 | 39.1 mm (1.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 66.2 mm (2.6 in) |
| 1894 | 79.0 mm (3.1 in) |
| 1895 | 43.2 mm (1.7 in) |
| 1896 | 81.1 mm (3.2 in) |
| 1897 | 84.1 mm (3.3 in) |
| 1898 | 67.3 mm (2.6 in) |
| 1899 | 99.5 mm (3.9 in) |
| 1900 | 98.9 mm (3.9 in) |
| 1901 | 91.0 mm (3.6 in) |
| 1902 | 96.6 mm (3.8 in) |
| 1903 | 92.5 mm (3.6 in) |
| 1904 | 74.2 mm (2.9 in) |
| 1905 | 70.1 mm (2.8 in) |
| 1906 | 92.7 mm (3.6 in) |
| 1907 | 94.0 mm (3.7 in) |
| 1908 | 101.6 mm (4.0 in) |
| 1909 | 95.3 mm (3.8 in) |
| 1910 | 52.1 mm (2.1 in) |
| 1911 | 71.1 mm (2.8 in) |
| 1912 | 81.4 mm (3.2 in) |
| 1913 | 92.5 mm (3.6 in) |
| 1914 | 87.0 mm (3.4 in) |
| 1915 | 101.9 mm (4.0 in) |
| 1916 | 65.6 mm (2.6 in) |
| 1917 | 76.6 mm (3.0 in) |
| 1918 | 97.6 mm (3.8 in) |
| 1919 | 65.2 mm (2.6 in) |
| 1920 | 122.2 mm (4.8 in) |
| 1921 | 80.8 mm (3.2 in) |
| 1922 | 94.0 mm (3.7 in) |
| 1923 | 76.2 mm (3.0 in) |
| 1924 | 75.5 mm (3.0 in) |
| 1925 | 120.2 mm (4.7 in) |
| 1926 | 107.2 mm (4.2 in) |
| 1927 | 69.2 mm (2.7 in) |
| 1928 | 86.9 mm (3.4 in) |
| 1929 | 65.5 mm (2.6 in) |
| 1930 | 72.3 mm (2.8 in) |
| 1931 | 65.5 mm (2.6 in) |
| 1932 | 79.4 mm (3.1 in) |
| 1933 | 86.3 mm (3.4 in) |
| 1934 | 90.7 mm (3.6 in) |
| 1935 | 161.6 mm (6.4 in) |
| 1936 | 63.0 mm (2.5 in) |
| 1937 | 86.9 mm (3.4 in) |
| 1938 | 106.0 mm (4.2 in) |
| 1939 | 78.7 mm (3.1 in) |
| 1940 | 110.3 mm (4.3 in) |
| 1941 | 113.1 mm (4.5 in) |
| 1942 | 84.3 mm (3.3 in) |
| 1943 | 95.0 mm (3.7 in) |
| 1944 | 82.6 mm (3.3 in) |
| 1945 | 133.4 mm (5.3 in) |
| 1946 | 118.9 mm (4.7 in) |
| 1947 | 84.5 mm (3.3 in) |
| 1948 | 62.8 mm (2.5 in) |
| 1949 | 66.0 mm (2.6 in) |
| 1950 | 110.7 mm (4.4 in) |
| 1951 | 99.4 mm (3.9 in) |
| 1952 | 73.4 mm (2.9 in) |
| 1953 | 97.8 mm (3.9 in) |
| 1954 | 77.5 mm (3.1 in) |
| 1955 | 63.5 mm (2.5 in) |
| 1956 | 59.7 mm (2.4 in) |
| 1957 | 54.8 mm (2.2 in) |
| 1958 | 40.4 mm (1.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 35 days |
| 1894 | 18 days |
| 1895 | 22 days |
| 1896 | 24 days |
| 1897 | 24 days |
| 1898 | 16 days |
| 1899 | 18 days |
| 1900 | 26 days |
| 1901 | 20 days |
| 1902 | 20 days |
| 1903 | 35 days |
| 1904 | 16 days |
| 1905 | 17 days |
| 1906 | 19 days |
| 1907 | 25 days |
| 1908 | 22 days |
| 1909 | 28 days |
| 1910 | 27 days |
| 1911 | 28 days |
| 1912 | 24 days |
| 1913 | 22 days |
| 1914 | 20 days |
| 1915 | 19 days |
| 1916 | 35 days |
| 1917 | 27 days |
| 1918 | 22 days |
| 1919 | 37 days |
| 1920 | 23 days |
| 1921 | 16 days |
| 1922 | 31 days |
| 1923 | 17 days |
| 1924 | 25 days |
| 1925 | 32 days |
| 1926 | 23 days |
| 1927 | 20 days |
| 1928 | 23 days |
| 1929 | 22 days |
| 1930 | 29 days |
| 1931 | 21 days |
| 1932 | 21 days |
| 1933 | 13 days |
| 1934 | 28 days |
| 1935 | 15 days |
| 1936 | 20 days |
| 1937 | 24 days |
| 1938 | 25 days |
| 1939 | 17 days |
| 1940 | 20 days |
| 1941 | 17 days |
| 1942 | 29 days |
| 1943 | 27 days |
| 1944 | 25 days |
| 1945 | 16 days |
| 1946 | 18 days |
| 1947 | 21 days |
| 1948 | 22 days |
| 1949 | 28 days |
| 1950 | 25 days |
| 1951 | 17 days |
| 1952 | 30 days |
| 1953 | 30 days |
| 1954 | 23 days |
| 1955 | 18 days |
| 1956 | 21 days |
| 1957 | 29 days |
| 1958 | 31 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
51 years with a frostAcross 51 years with a frost, the median last spring frost at Hillsboro falls on 16 May and the median first autumn frost on 25 September, which leaves a median of 131 days between them.
Fitted over all years, the growing season changes by +3.6 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1925 to 1957) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 16 May | n/a | 14 May | n/a | -1.8 days per decade |
| First autumn frost | 25 September | n/a | 26 September | n/a | +1.7 days per decade |
| Growing days | 131 days | n/a | 134 days | n/a | +3.6 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
47 years, 1896 to 1958A day with at least 54.7 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 98.1 mm (3.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 54.7 mm (2.2 in) | |
| 5 years | 68.4 mm (2.7 in) | |
| 10 years | 76.5 mm (3.0 in) | |
| 25 years | 85.9 mm (3.4 in) | |
| 50 years | 92.3 mm (3.6 in) | Longer than the 47 years of record |
| 100 years | 98.1 mm (3.9 in) | Longer than the 47 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, 47 years of values from 1896 to 1958.
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: 94.0 mm (3.7 in) in 1907; 83.8 mm (3.3 in) in 1945; 82.6 mm (3.3 in) in 1925.
Station Changes
3 suspected3 changes were suspected in the annual mean temperature of Hillsboro, at 1914, 1933 and 1946. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1914 ran 0.4 C (0.6 F) lower than in the years before (possible change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1933 ran 0.6 C (1.0 F) higher than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1946 ran 0.5 C (0.9 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1914 | -0.3 | -0.6 | possible | 5 |
| 1933 | +0.6 | +1.0 | likely | 5 |
| 1946 | +0.5 | +0.9 | likely | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
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 (2025-12-31).