Goderich Weather Records (CA006122845)
Record envelope, standing records and threshold days for Goderich (CA006122845), Ontario, Canada, with 85 years of record.
Key Facts for Goderich
- Goderich (CA006122845) is a weather station in Ontario, Canada at 43.75 latitude and -81.70 longitude, 220 m (722 ft) above sea level.
- The station reports from 1866 to 1950, 85 years of record.
- 1,464 records set at Goderich still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Goderich set a daily record low maximum temperature of -8.3 C (17.1 F) on 27 December 1950.
About the Station
- Location: Ontario, Canada, 43.75 latitude, -81.70 longitude.
- Elevation: 220 m (722 ft).
- Period of record: 1866 to 1950, 85 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 | 17.2 C (63.0 F) | -27.8 C (-18.0 F) | n/a | n/a |
| Feb | 16.1 C (61.0 F) | -30.6 C (-23.1 F) | n/a | n/a |
| Mar | 24.4 C (75.9 F) | -26.1 C (-15.0 F) | n/a | n/a |
| Apr | 28.9 C (84.0 F) | -14.4 C (6.1 F) | n/a | n/a |
| May | 31.7 C (89.1 F) | -6.7 C (19.9 F) | n/a | n/a |
| Jun | 35.6 C (96.1 F) | 0.0 C (32.0 F) | n/a | n/a |
| Jul | 37.2 C (99.0 F) | 3.9 C (39.0 F) | n/a | n/a |
| Aug | 36.1 C (97.0 F) | 3.9 C (39.0 F) | n/a | n/a |
| Sep | 35.0 C (95.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Oct | 28.3 C (82.9 F) | -6.7 C (19.9 F) | n/a | n/a |
| Nov | 23.9 C (75.0 F) | -17.8 C (0.0 F) | n/a | n/a |
| Dec | 17.2 C (63.0 F) | -25.6 C (-14.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1866 | 3 |
| 1867 | 32 |
| 1868 | 29 |
| 1869 | 44 |
| 1870 | 10 |
| 1871 | 53 |
| 1872 | 29 |
| 1873 | 67 |
| 1874 | 27 |
| 1875 | 59 |
| 1876 | 41 |
| 1877 | 38 |
| 1878 | 31 |
| 1879 | 49 |
| 1880 | 50 |
| 1881 | 44 |
| 1882 | 20 |
| 1883 | 31 |
| 1884 | 41 |
| 1885 | 64 |
| 1886 | 44 |
| 1887 | 36 |
| 1929 | 11 |
| 1930 | 45 |
| 1931 | 32 |
| 1932 | 21 |
| 1933 | 41 |
| 1934 | 41 |
| 1935 | 27 |
| 1936 | 39 |
| 1937 | 10 |
| 1938 | 24 |
| 1939 | 11 |
| 1940 | 30 |
| 1941 | 18 |
| 1942 | 22 |
| 1943 | 23 |
| 1944 | 22 |
| 1945 | 47 |
| 1946 | 38 |
| 1947 | 47 |
| 1948 | 21 |
| 1949 | 28 |
| 1950 | 24 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 1945-07-15 | Record daily precipitation | Record daily precipitation 90.2 mm (3.6 in) |
| 1947-08-13 | Record high minimum temperature | Record high minimum temperature 25.0 C (77.0 F) |
Wettest Day of Each Month
Jul: 90.2 mm (3.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 36.8 mm (1.4 in) | 24 January 1887 |
| Feb | 58.4 mm (2.3 in) | 8 February 1887 |
| Mar | 37.8 mm (1.5 in) | 3 March 1871 |
| Apr | 43.4 mm (1.7 in) | 5 April 1937 |
| May | 56.1 mm (2.2 in) | 7 May 1870 |
| Jun | 79.2 mm (3.1 in) | 27 June 1869 |
| Jul | 90.2 mm (3.6 in) | 15 July 1945 |
| Aug | 76.2 mm (3.0 in) | 18 August 1887 |
| Sep | 56.4 mm (2.2 in) | 3 September 1878 |
| Oct | 54.6 mm (2.1 in) | 28 October 1876 |
| Nov | 51.8 mm (2.0 in) | 7 November 1943 |
| Dec | 41.4 mm (1.6 in) | 23 December 1867 |
Period of Record Coverage
1866 to 1950| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1866 | 26 | 7% | No |
| 1867 | 313 | 86% | No |
| 1868 | 314 | 86% | No |
| 1869 | 352 | 96% | Yes |
| 1870 | 364 | 100% | Yes |
| 1871 | 365 | 100% | Yes |
| 1872 | 366 | 100% | Yes |
| 1873 | 365 | 100% | Yes |
| 1874 | 180 | 49% | No |
| 1875 | 365 | 100% | Yes |
| 1876 | 366 | 100% | Yes |
| 1877 | 365 | 100% | Yes |
| 1878 | 364 | 100% | Yes |
| 1879 | 365 | 100% | Yes |
| 1880 | 366 | 100% | Yes |
| 1881 | 365 | 100% | Yes |
| 1882 | 365 | 100% | Yes |
| 1883 | 365 | 100% | Yes |
| 1884 | 365 | 100% | Yes |
| 1885 | 365 | 100% | Yes |
| 1886 | 365 | 100% | Yes |
| 1887 | 365 | 100% | Yes |
| 1929 | 153 | 42% | No |
| 1930 | 365 | 100% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 334 | 92% | Yes |
| 1938 | 334 | 92% | Yes |
| 1939 | 244 | 67% | No |
| 1940 | 366 | 100% | Yes |
| 1941 | 326 | 89% | No |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 355 | 97% | Yes |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 27 December 1950 | Goderich, CA | daily low max | -8.3 C (17.1 F) | 1.6 C (2.9 F) | 77 years | 34 of 100 (Routine) |
| 17 December 1950 | Goderich, CA | daily snowfall | 12.7 cm (5.0 in) | 10.2 cm (4.0 in) | 83 years | 51 of 100 (Notable) |
| 17 December 1950 | Goderich, CA | daily rain | 12.7 mm (0.5 in) | 10.2 mm (0.4 in) | 83 years | 20 of 100 (Routine) |
| 16 December 1950 | Goderich, CA | daily snowfall | 15.2 cm (6.0 in) | 2.5 cm (1.0 in) | 67 years | 32 of 100 (Routine) |
| 16 December 1950 | Goderich, CA | daily rain | 15.2 mm (0.6 in) | 2.5 mm (0.10 in) | 67 years | 20 of 100 (Routine) |
| 3 December 1950 | Goderich, CA | daily high max | 12.8 C (55.0 F) | 0.6 C (1.1 F) | 76 years | 32 of 100 (Routine) |
| 25 November 1950 | Goderich, CA | daily snowfall | 22.9 cm (9.0 in) | 7.7 cm (3.0 in) | 3 years | 22 of 100 (Routine) |
| 24 November 1950 | Goderich, CA | daily snowfall | 14.0 cm (5.5 in) | 3.8 cm (1.5 in) | 0 years | 15 of 100 (Routine) |
| 24 November 1950 | Goderich, CA | daily rain | 14.0 mm (0.6 in) | 3.8 mm (0.15 in) | 0 years | 13 of 100 (Routine) |
| 1 November 1950 | Goderich, CA | monthly high max | 23.9 C (75.0 F) | 1.7 C (3.1 F) | 16 years | 26 of 100 (Routine) |
| 31 October 1950 | Goderich, CA | daily high max | 22.8 C (73.0 F) | 5.0 C (9.0 F) | 67 years | 37 of 100 (Notable) |
| 30 October 1950 | Goderich, CA | daily high max | 20.6 C (69.1 F) | 0.6 C (1.1 F) | 4 years | 10 of 100 (Routine) |
| 27 October 1950 | Goderich, CA | daily rain | 17.8 mm (0.7 in) | 1.3 mm (0.05 in) | 16 years | 13 of 100 (Routine) |
| 18 October 1950 | Goderich, CA | daily high max | 25.6 C (78.1 F) | 1.2 C (2.2 F) | 12 years | 13 of 100 (Routine) |
| 30 September 1950 | Goderich, CA | daily high min | 19.4 C (66.9 F) | 1.6 C (2.9 F) | 72 years | 32 of 100 (Routine) |
| 23 September 1950 | Goderich, CA | monthly low max (Tie) | 8.9 C (48.0 F) | tie | 80 years | 10 of 100 (Routine) |
| 19 September 1950 | Goderich, CA | daily low min (Tie) | 3.3 C (37.9 F) | tie | 20 years | 3 of 100 (Routine) |
| 16 September 1950 | Goderich, CA | daily rain | 21.1 mm (0.8 in) | 3.6 mm (0.14 in) | 74 years | 20 of 100 (Routine) |
| 16 September 1950 | Goderich, CA | daily low max (Tie) | 14.4 C (57.9 F) | tie | 12 years | 2 of 100 (Routine) |
| 28 August 1950 | Goderich, CA | daily rain | 65.0 mm (2.6 in) | 33.2 mm (1.3 in) | 0 years | 38 of 100 (Notable) |
Climate Trend
36 complete years, 1867 to 1950| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1867 | 7.0 C | -0.43 C |
| 1868 | 6.3 C | -1.09 C |
| 1869 | 6.1 C | -1.34 C |
| 1870 | 7.8 C | +0.38 C |
| 1871 | 6.5 C | -0.89 C |
| 1872 | 5.6 C | -1.85 C |
| 1873 | 5.5 C | -1.88 C |
| 1875 | 5.0 C | -2.39 C |
| 1876 | 7.4 C | -0.04 C |
| 1877 | 8.0 C | +0.61 C |
| 1878 | 8.8 C | +1.37 C |
| 1879 | 7.1 C | -0.35 C |
| 1880 | 7.9 C | +0.51 C |
| 1881 | 7.7 C | +0.33 C |
| 1882 | 8.0 C | +0.58 C |
| 1883 | 5.9 C | -1.49 C |
| 1884 | 7.1 C | -0.32 C |
| 1885 | 5.3 C | -2.06 C |
| 1886 | 6.5 C | -0.88 C |
| 1887 | 6.8 C | -0.62 C |
| 1930 | 8.1 C | +0.73 C |
| 1931 | 9.4 C | +1.97 C |
| 1932 | 8.4 C | +0.98 C |
| 1933 | 8.6 C | +1.24 C |
| 1934 | 7.5 C | +0.07 C |
| 1935 | 7.5 C | +0.12 C |
| 1936 | 7.4 C | -0.05 C |
| 1940 | 7.2 C | -0.22 C |
| 1943 | 7.2 C | -0.16 C |
| 1944 | 8.6 C | +1.19 C |
| 1945 | 8.0 C | +0.63 C |
| 1946 | 9.2 C | +1.77 C |
| 1947 | 8.3 C | +0.92 C |
| 1948 | 8.5 C | +1.14 C |
| 1949 | 9.0 C | +1.62 C |
| 1950 | 7.5 C | +0.06 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1867 to 1950. In Fahrenheit: 0.4 F (0.2 to 0.6) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.2 to 0.6) per decade | 1867 to 1950 | 36 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.2 to 0.5) per decade | 1867 to 1950 | 36 | Rise |
| Mean daily minimum | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.2 to 0.6) per decade | 1867 to 1950 | 36 | 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 1950| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 37.2 C (99.0 F) | 1936 | 32.2 C (90.0 F) | 44 |
| Coldest night (TNn) | -30.6 C (-23.1 F) | 1934 | -21.7 C (-7.1 F) | 44 |
| Wettest day (Rx1day) | 90.2 mm (3.6 in) | 1945 | 48.4 mm (1.9 in) | 44 |
| Wettest five days (Rx5day) | 100.9 mm (4.0 in) | 1945 | 68.4 mm (2.7 in) | 44 |
| Longest dry spell (CDD) | 42 days | 1868 | 17 days | 44 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1866 | 12.8 C (55.0 F) |
| 1867 | 30.0 C (86.0 F) |
| 1868 | 32.2 C (90.0 F) |
| 1869 | 30.0 C (86.0 F) |
| 1870 | 32.2 C (90.0 F) |
| 1871 | 32.8 C (91.0 F) |
| 1872 | 33.3 C (91.9 F) |
| 1873 | 32.2 C (90.0 F) |
| 1874 | 31.7 C (89.1 F) |
| 1875 | 30.6 C (87.1 F) |
| 1876 | 31.7 C (89.1 F) |
| 1877 | 30.6 C (87.1 F) |
| 1878 | 32.2 C (90.0 F) |
| 1879 | 32.8 C (91.0 F) |
| 1880 | 30.6 C (87.1 F) |
| 1881 | 33.9 C (93.0 F) |
| 1882 | 30.6 C (87.1 F) |
| 1883 | 30.6 C (87.1 F) |
| 1884 | 32.8 C (91.0 F) |
| 1885 | 31.7 C (89.1 F) |
| 1886 | 32.2 C (90.0 F) |
| 1887 | 33.3 C (91.9 F) |
| 1929 | 32.2 C (90.0 F) |
| 1930 | 32.2 C (90.0 F) |
| 1931 | 35.0 C (95.0 F) |
| 1932 | 30.6 C (87.1 F) |
| 1933 | 35.0 C (95.0 F) |
| 1934 | 35.6 C (96.1 F) |
| 1935 | 32.8 C (91.0 F) |
| 1936 | 37.2 C (99.0 F) |
| 1937 | 31.7 C (89.1 F) |
| 1938 | 31.7 C (89.1 F) |
| 1939 | 33.9 C (93.0 F) |
| 1940 | 32.8 C (91.0 F) |
| 1941 | 33.9 C (93.0 F) |
| 1942 | 32.2 C (90.0 F) |
| 1943 | 31.7 C (89.1 F) |
| 1944 | 36.1 C (97.0 F) |
| 1945 | 33.3 C (91.9 F) |
| 1946 | 32.8 C (91.0 F) |
| 1947 | 33.9 C (93.0 F) |
| 1948 | 34.4 C (93.9 F) |
| 1949 | 33.9 C (93.0 F) |
| 1950 | 29.4 C (84.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1866 | -22.2 C (-8.0 F) |
| 1867 | -24.4 C (-11.9 F) |
| 1868 | -23.9 C (-11.0 F) |
| 1869 | -20.0 C (-4.0 F) |
| 1870 | -19.4 C (-2.9 F) |
| 1871 | -24.4 C (-11.9 F) |
| 1872 | -25.0 C (-13.0 F) |
| 1873 | -27.8 C (-18.0 F) |
| 1874 | -17.2 C (1.0 F) |
| 1875 | -27.8 C (-18.0 F) |
| 1876 | -21.1 C (-6.0 F) |
| 1877 | -24.4 C (-11.9 F) |
| 1878 | -13.9 C (7.0 F) |
| 1879 | -23.3 C (-9.9 F) |
| 1880 | -20.6 C (-5.1 F) |
| 1881 | -28.3 C (-18.9 F) |
| 1882 | -26.7 C (-16.1 F) |
| 1883 | -22.2 C (-8.0 F) |
| 1884 | -23.9 C (-11.0 F) |
| 1885 | -26.1 C (-15.0 F) |
| 1886 | -26.7 C (-16.1 F) |
| 1887 | -23.3 C (-9.9 F) |
| 1929 | -14.4 C (6.1 F) |
| 1930 | -21.7 C (-7.1 F) |
| 1931 | -15.0 C (5.0 F) |
| 1932 | -14.4 C (6.1 F) |
| 1933 | -21.7 C (-7.1 F) |
| 1934 | -30.6 C (-23.1 F) |
| 1935 | -21.7 C (-7.1 F) |
| 1936 | -23.9 C (-11.0 F) |
| 1937 | -14.4 C (6.1 F) |
| 1938 | -20.0 C (-4.0 F) |
| 1939 | -18.3 C (-0.9 F) |
| 1940 | -20.0 C (-4.0 F) |
| 1941 | -16.7 C (1.9 F) |
| 1942 | -25.6 C (-14.1 F) |
| 1943 | -28.3 C (-18.9 F) |
| 1944 | -16.7 C (1.9 F) |
| 1945 | -20.0 C (-4.0 F) |
| 1946 | -18.9 C (-2.0 F) |
| 1947 | -17.8 C (0.0 F) |
| 1948 | -27.2 C (-17.0 F) |
| 1949 | -14.4 C (6.1 F) |
| 1950 | -18.9 C (-2.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1866 | 28.4 mm (1.1 in) |
| 1867 | 41.4 mm (1.6 in) |
| 1868 | 61.5 mm (2.4 in) |
| 1869 | 79.2 mm (3.1 in) |
| 1870 | 61.0 mm (2.4 in) |
| 1871 | 39.4 mm (1.6 in) |
| 1872 | 35.6 mm (1.4 in) |
| 1873 | 35.6 mm (1.4 in) |
| 1874 | 23.6 mm (0.9 in) |
| 1875 | 34.3 mm (1.4 in) |
| 1876 | 54.6 mm (2.1 in) |
| 1877 | 57.2 mm (2.3 in) |
| 1878 | 56.4 mm (2.2 in) |
| 1879 | 57.2 mm (2.3 in) |
| 1880 | 58.4 mm (2.3 in) |
| 1881 | 29.2 mm (1.1 in) |
| 1882 | 35.3 mm (1.4 in) |
| 1883 | 77.0 mm (3.0 in) |
| 1884 | 31.8 mm (1.3 in) |
| 1885 | 40.6 mm (1.6 in) |
| 1886 | 39.4 mm (1.6 in) |
| 1887 | 76.2 mm (3.0 in) |
| 1929 | 32.5 mm (1.3 in) |
| 1930 | 39.4 mm (1.6 in) |
| 1931 | 48.8 mm (1.9 in) |
| 1932 | 53.3 mm (2.1 in) |
| 1933 | 33.0 mm (1.3 in) |
| 1934 | 31.0 mm (1.2 in) |
| 1935 | 58.4 mm (2.3 in) |
| 1936 | 55.6 mm (2.2 in) |
| 1937 | 48.0 mm (1.9 in) |
| 1938 | 55.9 mm (2.2 in) |
| 1939 | 30.7 mm (1.2 in) |
| 1940 | 37.8 mm (1.5 in) |
| 1941 | 45.7 mm (1.8 in) |
| 1942 | 46.7 mm (1.8 in) |
| 1943 | 64.5 mm (2.5 in) |
| 1944 | 62.2 mm (2.4 in) |
| 1945 | 90.2 mm (3.6 in) |
| 1946 | 35.8 mm (1.4 in) |
| 1947 | 49.8 mm (2.0 in) |
| 1948 | 57.9 mm (2.3 in) |
| 1949 | 76.2 mm (3.0 in) |
| 1950 | 65.0 mm (2.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1866 | 74.2 mm (2.9 in) |
| 1867 | 51.3 mm (2.0 in) |
| 1868 | 76.8 mm (3.0 in) |
| 1869 | 90.4 mm (3.6 in) |
| 1870 | 86.0 mm (3.4 in) |
| 1871 | 44.5 mm (1.8 in) |
| 1872 | 68.0 mm (2.7 in) |
| 1873 | 62.5 mm (2.5 in) |
| 1874 | 42.9 mm (1.7 in) |
| 1875 | 54.6 mm (2.1 in) |
| 1876 | 89.1 mm (3.5 in) |
| 1877 | 64.0 mm (2.5 in) |
| 1878 | 70.9 mm (2.8 in) |
| 1879 | 90.2 mm (3.6 in) |
| 1880 | 64.2 mm (2.5 in) |
| 1881 | 41.4 mm (1.6 in) |
| 1882 | 46.8 mm (1.8 in) |
| 1883 | 80.0 mm (3.1 in) |
| 1884 | 54.8 mm (2.2 in) |
| 1885 | 76.2 mm (3.0 in) |
| 1886 | 54.4 mm (2.1 in) |
| 1887 | 94.5 mm (3.7 in) |
| 1929 | 66.7 mm (2.6 in) |
| 1930 | 71.9 mm (2.8 in) |
| 1931 | 66.5 mm (2.6 in) |
| 1932 | 68.0 mm (2.7 in) |
| 1933 | 62.5 mm (2.5 in) |
| 1934 | 41.6 mm (1.6 in) |
| 1935 | 78.2 mm (3.1 in) |
| 1936 | 86.8 mm (3.4 in) |
| 1937 | 80.8 mm (3.2 in) |
| 1938 | 83.3 mm (3.3 in) |
| 1939 | 45.2 mm (1.8 in) |
| 1940 | 68.7 mm (2.7 in) |
| 1941 | 66.3 mm (2.6 in) |
| 1942 | 53.3 mm (2.1 in) |
| 1943 | 76.2 mm (3.0 in) |
| 1944 | 75.9 mm (3.0 in) |
| 1945 | 100.9 mm (4.0 in) |
| 1946 | 55.3 mm (2.2 in) |
| 1947 | 80.0 mm (3.1 in) |
| 1948 | 64.0 mm (2.5 in) |
| 1949 | 76.2 mm (3.0 in) |
| 1950 | 82.3 mm (3.2 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1866 | 8 days |
| 1867 | 16 days |
| 1868 | 42 days |
| 1869 | 12 days |
| 1870 | 14 days |
| 1871 | 13 days |
| 1872 | 19 days |
| 1873 | 13 days |
| 1874 | 19 days |
| 1875 | 12 days |
| 1876 | 16 days |
| 1877 | 26 days |
| 1878 | 13 days |
| 1879 | 14 days |
| 1880 | 10 days |
| 1881 | 26 days |
| 1882 | 16 days |
| 1883 | 12 days |
| 1884 | 16 days |
| 1885 | 14 days |
| 1886 | 18 days |
| 1887 | 24 days |
| 1929 | 13 days |
| 1930 | 18 days |
| 1931 | 31 days |
| 1932 | 16 days |
| 1933 | 18 days |
| 1934 | 14 days |
| 1935 | 15 days |
| 1936 | 27 days |
| 1937 | 20 days |
| 1938 | 11 days |
| 1939 | 19 days |
| 1940 | 20 days |
| 1941 | 40 days |
| 1942 | 17 days |
| 1943 | 27 days |
| 1944 | 27 days |
| 1945 | 17 days |
| 1946 | 18 days |
| 1947 | 18 days |
| 1948 | 23 days |
| 1949 | 19 days |
| 1950 | 14 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
36 years with a frostAcross 36 years with a frost, the median last spring frost at Goderich falls on 3 May and the median first autumn frost on 15 October, which leaves a median of 164 days between them.
Fitted over all years, the growing season changes by +0.8 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1873 to 1950) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 3 May | n/a | 3 May | n/a | -0.5 days per decade |
| First autumn frost | 15 October | n/a | 15 October | n/a | +0.3 days per decade |
| Growing days | 164 days | n/a | 165 days | n/a | +0.8 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
36 years, 1867 to 1950A day with at least 50.4 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 92.3 mm (3.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 50.4 mm (2.0 in) | |
| 5 years | 63.9 mm (2.5 in) | |
| 10 years | 71.8 mm (2.8 in) | |
| 25 years | 80.8 mm (3.2 in) | |
| 50 years | 86.9 mm (3.4 in) | Longer than the 36 years of record |
| 100 years | 92.3 mm (3.6 in) | Longer than the 36 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, 36 years of values from 1867 to 1950.
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: 90.2 mm (3.6 in) in 1945; 79.2 mm (3.1 in) in 1869; 76.2 mm (3.0 in) in 1887.
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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).