Imlay Weather Records (USC00263957)
Record envelope, standing records and threshold days for Imlay (USC00263957), Nevada, United States, with 112 years of record.
Key Facts for Imlay
- Imlay (USC00263957) is a weather station in Nevada, United States at 40.66 latitude and -118.16 longitude, 1,298 m (4,260 ft) above sea level.
- The station reports from 1914 to 2025, 112 years of record.
- 1,464 records set at Imlay still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Imlay set a daily record low minimum temperature of -6.1 C (21.0 F) on 31 May 2024.
About the Station
- Location: Nevada, United States, 40.66 latitude, -118.16 longitude.
- Elevation: 1,298 m (4,260 ft).
- Period of record: 1914 to 2025, 112 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
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 | 21.1 C (70.0 F) | -37.2 C (-35.0 F) | n/a | n/a |
| Feb | 24.4 C (75.9 F) | -33.3 C (-27.9 F) | n/a | n/a |
| Mar | 27.8 C (82.0 F) | -20.6 C (-5.1 F) | 17.2 C (63.0 F) | -6.7 C (19.9 F) |
| Apr | 32.2 C (90.0 F) | -12.2 C (10.0 F) | 22.2 C (72.0 F) | n/a |
| May | 37.2 C (99.0 F) | -8.3 C (17.1 F) | n/a | n/a |
| Jun | 42.2 C (108.0 F) | -3.3 C (26.1 F) | n/a | n/a |
| Jul | 44.4 C (111.9 F) | -2.2 C (28.0 F) | n/a | n/a |
| Aug | 41.1 C (106.0 F) | -1.7 C (28.9 F) | n/a | n/a |
| Sep | 40.0 C (104.0 F) | -8.9 C (16.0 F) | n/a | n/a |
| Oct | 36.7 C (98.1 F) | -16.7 C (1.9 F) | n/a | n/a |
| Nov | 27.8 C (82.0 F) | -21.1 C (-6.0 F) | n/a | n/a |
| Dec | 25.6 C (78.1 F) | -37.2 C (-35.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1914 | 5 |
| 1915 | 2 |
| 1916 | 28 |
| 1917 | 37 |
| 1918 | 17 |
| 1919 | 13 |
| 1920 | 10 |
| 1921 | 13 |
| 1922 | 10 |
| 1923 | 12 |
| 1924 | 22 |
| 1925 | 10 |
| 1926 | 10 |
| 1927 | 26 |
| 1928 | 10 |
| 1929 | 9 |
| 1930 | 11 |
| 1931 | 10 |
| 1932 | 25 |
| 1933 | 16 |
| 1934 | 19 |
| 1935 | 7 |
| 1936 | 12 |
| 1937 | 21 |
| 1939 | 29 |
| 1940 | 16 |
| 1941 | 14 |
| 1942 | 27 |
| 1943 | 18 |
| 1944 | 16 |
| 1945 | 21 |
| 1946 | 16 |
| 1947 | 11 |
| 1948 | 16 |
| 1949 | 21 |
| 1950 | 19 |
| 1951 | 9 |
| 1952 | 14 |
| 1953 | 20 |
| 1954 | 7 |
| 1955 | 29 |
| 1956 | 11 |
| 1957 | 9 |
| 1958 | 9 |
| 1959 | 13 |
| 1960 | 21 |
| 1961 | 15 |
| 1962 | 6 |
| 1963 | 11 |
| 1964 | 20 |
| 1965 | 14 |
| 1966 | 13 |
| 1967 | 5 |
| 1968 | 5 |
| 1969 | 5 |
| 1970 | 7 |
| 1971 | 22 |
| 1972 | 20 |
| 1973 | 6 |
| 1974 | 3 |
| 1975 | 7 |
| 1976 | 8 |
| 1977 | 14 |
| 1978 | 11 |
| 1979 | 10 |
| 1980 | 17 |
| 1981 | 10 |
| 1982 | 8 |
| 1983 | 7 |
| 1984 | 10 |
| 1985 | 20 |
| 1986 | 13 |
| 1987 | 12 |
| 1988 | 7 |
| 1989 | 18 |
| 1990 | 18 |
| 1991 | 6 |
| 1992 | 12 |
| 1993 | 6 |
| 1994 | 7 |
| 1995 | 12 |
| 1996 | 7 |
| 1997 | 3 |
| 1998 | 14 |
| 1999 | 4 |
| 2000 | 15 |
| 2001 | 13 |
| 2002 | 13 |
| 2003 | 14 |
| 2004 | 14 |
| 2005 | 7 |
| 2006 | 12 |
| 2007 | 7 |
| 2008 | 13 |
| 2009 | 12 |
| 2010 | 15 |
| 2011 | 14 |
| 2012 | 15 |
| 2013 | 16 |
| 2014 | 6 |
| 2015 | 10 |
| 2016 | 10 |
| 2017 | 20 |
| 2018 | 5 |
| 2019 | 16 |
| 2020 | 8 |
| 2021 | 6 |
| 2022 | 29 |
| 2023 | 36 |
| 2024 | 4 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1959-07-17 | Record high maximum temperature | Record high maximum temperature 44.4 C (111.9 F) |
| 1989-02-19 | Record daily precipitation | Record daily precipitation 102.9 mm (4.1 in) |
| 1990-12-21 | Record low maximum temperature | Record low maximum temperature -18.3 C (-0.9 F) |
| 2018-03-15 | Record daily snowfall | Record daily snowfall 26.7 cm (10.5 in) |
| 2018-03-16 | Record snow depth | Record snow depth 33.0 cm (13.0 in) |
Wettest Day of Each Month
Feb: 102.9 mm (4.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 24.1 mm (0.9 in) | 21 January 1943 |
| Feb | 102.9 mm (4.1 in) | 19 February 1989 |
| Mar | 32.3 mm (1.3 in) | 14 March 2021 |
| Apr | 34.3 mm (1.4 in) | 26 April 1978 |
| May | 29.7 mm (1.2 in) | 25 May 1987 |
| Jun | 36.1 mm (1.4 in) | 29 June 1970 |
| Jul | 38.1 mm (1.5 in) | 22 July 1979 |
| Aug | 68.6 mm (2.7 in) | 28 August 1922 |
| Sep | 25.4 mm (1.0 in) | 22 September 1916 |
| Oct | 43.2 mm (1.7 in) | 24 October 2021 |
| Nov | 34.5 mm (1.4 in) | 2 November 2015 |
| Dec | 40.6 mm (1.6 in) | 29 December 1927 |
Period of Record Coverage
1914 to 2025| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1914 | 90 | 25% | No |
| 1915 | 153 | 42% | No |
| 1916 | 331 | 90% | Yes |
| 1917 | 364 | 100% | Yes |
| 1918 | 363 | 99% | Yes |
| 1919 | 364 | 100% | Yes |
| 1920 | 333 | 91% | Yes |
| 1921 | 361 | 99% | Yes |
| 1922 | 364 | 100% | Yes |
| 1923 | 362 | 99% | Yes |
| 1924 | 363 | 99% | Yes |
| 1925 | 360 | 99% | Yes |
| 1926 | 364 | 100% | Yes |
| 1927 | 356 | 98% | Yes |
| 1928 | 353 | 96% | Yes |
| 1929 | 329 | 90% | Yes |
| 1930 | 358 | 98% | Yes |
| 1931 | 354 | 97% | Yes |
| 1932 | 359 | 98% | Yes |
| 1933 | 359 | 98% | Yes |
| 1934 | 340 | 93% | Yes |
| 1935 | 348 | 95% | Yes |
| 1936 | 355 | 97% | Yes |
| 1937 | 204 | 56% | No |
| 1938 | 24 | 7% | No |
| 1939 | 335 | 92% | Yes |
| 1940 | 364 | 99% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 302 | 83% | No |
| 1943 | 345 | 95% | Yes |
| 1944 | 222 | 61% | No |
| 1945 | 216 | 59% | No |
| 1946 | 267 | 73% | No |
| 1947 | 359 | 98% | Yes |
| 1948 | 361 | 99% | Yes |
| 1949 | 306 | 84% | No |
| 1950 | 352 | 96% | Yes |
| 1951 | 352 | 96% | Yes |
| 1952 | 321 | 88% | No |
| 1953 | 360 | 99% | Yes |
| 1954 | 280 | 77% | No |
| 1955 | 357 | 98% | Yes |
| 1956 | 342 | 93% | Yes |
| 1957 | 350 | 96% | Yes |
| 1958 | 336 | 92% | Yes |
| 1959 | 363 | 99% | Yes |
| 1960 | 346 | 95% | Yes |
| 1961 | 354 | 97% | Yes |
| 1962 | 363 | 99% | Yes |
| 1963 | 363 | 99% | Yes |
| 1964 | 359 | 98% | Yes |
| 1965 | 354 | 97% | Yes |
| 1966 | 337 | 92% | Yes |
| 1967 | 349 | 96% | Yes |
| 1968 | 210 | 57% | No |
| 1969 | 290 | 79% | No |
| 1970 | 282 | 77% | No |
| 1971 | 303 | 83% | No |
| 1972 | 334 | 91% | Yes |
| 1973 | 266 | 73% | No |
| 1974 | 287 | 79% | No |
| 1975 | 329 | 90% | Yes |
| 1976 | 301 | 82% | No |
| 1977 | 319 | 87% | No |
| 1978 | 283 | 78% | No |
| 1979 | 225 | 62% | No |
| 1980 | 236 | 64% | No |
| 1981 | 196 | 54% | No |
| 1982 | 264 | 72% | No |
| 1983 | 363 | 99% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 357 | 98% | Yes |
| 1986 | 334 | 92% | Yes |
| 1987 | 351 | 96% | Yes |
| 1988 | 339 | 93% | Yes |
| 1989 | 324 | 89% | No |
| 1990 | 346 | 95% | Yes |
| 1991 | 352 | 96% | Yes |
| 1992 | 330 | 90% | Yes |
| 1993 | 334 | 92% | Yes |
| 1994 | 345 | 95% | Yes |
| 1995 | 325 | 89% | No |
| 1996 | 326 | 89% | No |
| 1997 | 325 | 89% | No |
| 1998 | 311 | 85% | No |
| 1999 | 341 | 93% | Yes |
| 2000 | 343 | 94% | Yes |
| 2001 | 346 | 95% | Yes |
| 2002 | 353 | 97% | Yes |
| 2003 | 353 | 97% | Yes |
| 2004 | 357 | 98% | Yes |
| 2005 | 356 | 98% | Yes |
| 2006 | 357 | 98% | Yes |
| 2007 | 358 | 98% | Yes |
| 2008 | 363 | 99% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 362 | 99% | Yes |
| 2011 | 363 | 99% | Yes |
| 2012 | 364 | 99% | Yes |
| 2013 | 363 | 99% | Yes |
| 2014 | 363 | 99% | Yes |
| 2015 | 356 | 98% | Yes |
| 2016 | 334 | 91% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 350 | 96% | Yes |
| 2019 | 353 | 97% | Yes |
| 2020 | 261 | 71% | No |
| 2021 | 114 | 31% | No |
| 2022 | 300 | 82% | No |
| 2023 | 325 | 89% | No |
| 2024 | 169 | 46% | No |
| 2025 | 23 | 6% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 31 May 2024 | Imlay, US | daily low min | -6.1 C (21.0 F) | 3.3 C (5.9 F) | 101 years | 47 of 100 (Notable) |
| 5 April 2024 | Imlay, US | daily low max | 2.8 C (37.0 F) | 2.2 C (4.0 F) | 18 years | 18 of 100 (Routine) |
| 30 March 2024 | Imlay, US | daily snowfall | 0.5 cm (0.2 in) | 0.5 cm (0.2 in) | 109 years | 20 of 100 (Routine) |
| 30 March 2024 | Imlay, US | daily rain | 12.7 mm (0.5 in) | 4.1 mm (0.16 in) | 66 years | 20 of 100 (Routine) |
| 1 March 2024 | Imlay, US | daily snow depth (Tie) | 2.5 cm (1.0 in) | tie | 73 years | 7 of 100 (Routine) |
| 29 February 2024 | Imlay, US | daily high min | 3.3 C (37.9 F) | 0.5 C (0.9 F) | 36 years | 20 of 100 (Routine) |
| 30 January 2024 | Imlay, US | daily high min (Tie) | 3.9 C (39.0 F) | tie | 28 years | 4 of 100 (Routine) |
| 28 January 2024 | Imlay, US | daily high min | 2.2 C (36.0 F) | 1.1 C (2.0 F) | 96 years | 40 of 100 (Notable) |
| 22 January 2024 | Imlay, US | daily rain | 10.9 mm (0.4 in) | 0.2 mm (0.01 in) | 68 years | 20 of 100 (Routine) |
| 30 November 2023 | Imlay, US | daily snowfall | 1.3 cm (0.5 in) | 1.0 cm (0.4 in) | 8 years | 15 of 100 (Routine) |
| 6 November 2023 | Imlay, US | monthly high max | 27.8 C (82.0 F) | 1.1 C (2.0 F) | 79 years | 44 of 100 (Notable) |
| 5 November 2023 | Imlay, US | daily high min (Tie) | 7.8 C (46.0 F) | tie | 53 years | 6 of 100 (Routine) |
| 3 November 2023 | Imlay, US | monthly high min | 12.2 C (54.0 F) | 2.2 C (4.0 F) | 35 years | 34 of 100 (Routine) |
| 24 October 2023 | Imlay, US | daily high min | 10.0 C (50.0 F) | 3.3 C (5.9 F) | 88 years | 43 of 100 (Notable) |
| 23 October 2023 | Imlay, US | daily high min | 10.0 C (50.0 F) | 1.1 C (2.0 F) | 82 years | 36 of 100 (Notable) |
| 15 October 2023 | Imlay, US | monthly high min | 17.2 C (63.0 F) | 1.1 C (2.0 F) | 75 years | 44 of 100 (Notable) |
| 1 October 2023 | Imlay, US | daily low max | 8.9 C (48.0 F) | 0.5 C (0.9 F) | 38 years | 21 of 100 (Routine) |
| 30 September 2023 | Imlay, US | daily rain | 19.8 mm (0.8 in) | 9.6 mm (0.38 in) | 38 years | 20 of 100 (Routine) |
| 8 September 2023 | Imlay, US | monthly high min | 20.6 C (69.1 F) | 0.6 C (1.1 F) | 92 years | 48 of 100 (Notable) |
| 3 September 2023 | Imlay, US | daily rain | 20.3 mm (0.8 in) | 9.1 mm (0.36 in) | 86 years | 20 of 100 (Routine) |
Climate Trend
72 complete years, 1918 to 2023| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1918 | 9.8 C | -0.54 C |
| 1919 | 10.0 C | -0.42 C |
| 1921 | 10.9 C | +0.55 C |
| 1922 | 8.9 C | -1.46 C |
| 1923 | 9.3 C | -1.09 C |
| 1924 | 9.5 C | -0.92 C |
| 1925 | 10.5 C | +0.17 C |
| 1926 | 10.9 C | +0.54 C |
| 1927 | 9.2 C | -1.20 C |
| 1928 | 9.6 C | -0.74 C |
| 1930 | 9.2 C | -1.16 C |
| 1931 | 11.2 C | +0.81 C |
| 1932 | 9.0 C | -1.33 C |
| 1933 | 9.8 C | -0.53 C |
| 1935 | 9.7 C | -0.68 C |
| 1936 | 10.6 C | +0.24 C |
| 1939 | 11.8 C | +1.38 C |
| 1941 | 12.0 C | +1.62 C |
| 1943 | 11.0 C | +0.64 C |
| 1947 | 11.7 C | +1.28 C |
| 1948 | 10.0 C | -0.36 C |
| 1950 | 11.9 C | +1.51 C |
| 1951 | 10.9 C | +0.48 C |
| 1953 | 11.0 C | +0.65 C |
| 1955 | 9.9 C | -0.48 C |
| 1957 | 9.6 C | -0.73 C |
| 1959 | 10.9 C | +0.53 C |
| 1960 | 11.1 C | +0.68 C |
| 1961 | 11.1 C | +0.70 C |
| 1962 | 10.5 C | +0.13 C |
| 1963 | 10.0 C | -0.38 C |
| 1964 | 9.8 C | -0.53 C |
| 1965 | 9.9 C | -0.50 C |
| 1966 | 10.9 C | +0.50 C |
| 1967 | 11.0 C | +0.66 C |
| 1969 | 11.3 C | +0.91 C |
| 1972 | 11.1 C | +0.69 C |
| 1983 | 10.2 C | -0.13 C |
| 1984 | 9.4 C | -0.98 C |
| 1985 | 9.1 C | -1.28 C |
| 1986 | 11.3 C | +0.95 C |
| 1987 | 10.9 C | +0.53 C |
| 1988 | 10.6 C | +0.23 C |
| 1989 | 10.0 C | -0.42 C |
| 1990 | 10.1 C | -0.28 C |
| 1991 | 10.3 C | -0.06 C |
| 1993 | 9.2 C | -1.15 C |
| 1994 | 10.9 C | +0.51 C |
| 1995 | 11.2 C | +0.80 C |
| 1996 | 11.0 C | +0.60 C |
| 1997 | 10.6 C | +0.21 C |
| 1999 | 10.3 C | -0.10 C |
| 2000 | 11.1 C | +0.68 C |
| 2001 | 11.0 C | +0.59 C |
| 2002 | 10.6 C | +0.26 C |
| 2003 | 11.4 C | +1.05 C |
| 2004 | 10.6 C | +0.27 C |
| 2005 | 9.9 C | -0.49 C |
| 2006 | 10.0 C | -0.34 C |
| 2007 | 10.2 C | -0.13 C |
| 2008 | 10.1 C | -0.27 C |
| 2009 | 9.9 C | -0.50 C |
| 2010 | 9.8 C | -0.61 C |
| 2011 | 9.1 C | -1.24 C |
| 2012 | 10.8 C | +0.41 C |
| 2013 | 9.1 C | -1.26 C |
| 2014 | 11.5 C | +1.16 C |
| 2015 | 11.3 C | +0.96 C |
| 2017 | 10.8 C | +0.38 C |
| 2018 | 10.5 C | +0.16 C |
| 2019 | 9.7 C | -0.65 C |
| 2023 | 8.9 C | -1.50 C |
The fitted trend in annual mean temperature here over 1918 to 2023 is 0.01 C (-0.05 to 0.07) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.02 F (-0.08 to 0.13) per decade. The slope is a straight line fitted to 72 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.01 C (-0.05 to 0.07) per decade | 0.02 F (-0.08 to 0.13) per decade | 1918 to 2023 | 72 | Not clearly different from zero |
| Mean daily maximum | -0.11 C (-0.19 to -0.02) per decade | -0.19 F (-0.34 to -0.04) per decade | 1918 to 2023 | 72 | Fall |
| Mean daily minimum | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.3) per decade | 1918 to 2023 | 72 | 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
1914 to 2025| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 44.4 C (111.9 F) | 1959 | 38.9 C (102.0 F) | 112 |
| Coldest night (TNn) | -37.2 C (-35.0 F) | 1917 | -20.3 C (-4.5 F) | 112 |
| Wettest day (Rx1day) | 102.9 mm (4.1 in) | 1989 | 19.1 mm (0.8 in) | 112 |
| Wettest five days (Rx5day) | 154.7 mm (6.1 in) | 1989 | 30.7 mm (1.2 in) | 111 |
| Longest dry spell (CDD) | 206 days | 1924 | 66 days | 112 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1914 | 35.6 C (96.1 F) |
| 1915 | 30.6 C (87.1 F) |
| 1916 | 36.7 C (98.1 F) |
| 1917 | 40.0 C (104.0 F) |
| 1918 | 38.3 C (100.9 F) |
| 1919 | 38.3 C (100.9 F) |
| 1920 | 38.3 C (100.9 F) |
| 1921 | 38.3 C (100.9 F) |
| 1922 | 39.4 C (102.9 F) |
| 1923 | 38.9 C (102.0 F) |
| 1924 | 38.9 C (102.0 F) |
| 1925 | 40.6 C (105.1 F) |
| 1926 | 38.3 C (100.9 F) |
| 1927 | 37.2 C (99.0 F) |
| 1928 | 40.0 C (104.0 F) |
| 1929 | 40.0 C (104.0 F) |
| 1930 | 43.3 C (109.9 F) |
| 1931 | 42.2 C (108.0 F) |
| 1932 | 37.2 C (99.0 F) |
| 1933 | 40.0 C (104.0 F) |
| 1934 | 40.0 C (104.0 F) |
| 1935 | 37.8 C (100.0 F) |
| 1936 | 40.0 C (104.0 F) |
| 1937 | 37.8 C (100.0 F) |
| 1938 | 16.7 C (62.1 F) |
| 1939 | 38.9 C (102.0 F) |
| 1940 | 40.0 C (104.0 F) |
| 1941 | 41.1 C (106.0 F) |
| 1942 | 41.7 C (107.1 F) |
| 1943 | 40.0 C (104.0 F) |
| 1944 | 36.7 C (98.1 F) |
| 1945 | 40.0 C (104.0 F) |
| 1946 | 43.3 C (109.9 F) |
| 1947 | 40.6 C (105.1 F) |
| 1948 | 38.3 C (100.9 F) |
| 1949 | 37.8 C (100.0 F) |
| 1950 | 39.4 C (102.9 F) |
| 1951 | 38.9 C (102.0 F) |
| 1952 | 35.6 C (96.1 F) |
| 1953 | 40.0 C (104.0 F) |
| 1954 | 41.1 C (106.0 F) |
| 1955 | 40.0 C (104.0 F) |
| 1956 | 38.3 C (100.9 F) |
| 1957 | 39.4 C (102.9 F) |
| 1958 | 41.1 C (106.0 F) |
| 1959 | 44.4 C (111.9 F) |
| 1960 | 42.8 C (109.0 F) |
| 1961 | 41.1 C (106.0 F) |
| 1962 | 38.3 C (100.9 F) |
| 1963 | 38.9 C (102.0 F) |
| 1964 | 38.9 C (102.0 F) |
| 1965 | 37.8 C (100.0 F) |
| 1966 | 40.6 C (105.1 F) |
| 1967 | 39.4 C (102.9 F) |
| 1968 | 39.4 C (102.9 F) |
| 1969 | 39.4 C (102.9 F) |
| 1970 | 38.3 C (100.9 F) |
| 1971 | 38.9 C (102.0 F) |
| 1972 | 40.0 C (104.0 F) |
| 1973 | 38.3 C (100.9 F) |
| 1974 | 38.3 C (100.9 F) |
| 1975 | 39.4 C (102.9 F) |
| 1976 | 38.9 C (102.0 F) |
| 1977 | 40.6 C (105.1 F) |
| 1978 | 41.1 C (106.0 F) |
| 1979 | 41.1 C (106.0 F) |
| 1980 | 40.6 C (105.1 F) |
| 1981 | 40.6 C (105.1 F) |
| 1982 | 36.1 C (97.0 F) |
| 1983 | 38.3 C (100.9 F) |
| 1984 | 37.2 C (99.0 F) |
| 1985 | 41.7 C (107.1 F) |
| 1986 | 37.8 C (100.0 F) |
| 1987 | 38.9 C (102.0 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 38.3 C (100.9 F) |
| 1990 | 39.4 C (102.9 F) |
| 1991 | 37.8 C (100.0 F) |
| 1992 | 38.9 C (102.0 F) |
| 1993 | 37.2 C (99.0 F) |
| 1994 | 39.4 C (102.9 F) |
| 1995 | 38.3 C (100.9 F) |
| 1996 | 38.3 C (100.9 F) |
| 1997 | 39.4 C (102.9 F) |
| 1998 | 40.6 C (105.1 F) |
| 1999 | 37.2 C (99.0 F) |
| 2000 | 40.0 C (104.0 F) |
| 2001 | 40.0 C (104.0 F) |
| 2002 | 41.7 C (107.1 F) |
| 2003 | 41.1 C (106.0 F) |
| 2004 | 37.2 C (99.0 F) |
| 2005 | 40.6 C (105.1 F) |
| 2006 | 38.9 C (102.0 F) |
| 2007 | 40.0 C (104.0 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 38.3 C (100.9 F) |
| 2010 | 37.8 C (100.0 F) |
| 2011 | 36.7 C (98.1 F) |
| 2012 | 38.3 C (100.9 F) |
| 2013 | 40.0 C (104.0 F) |
| 2014 | 39.4 C (102.9 F) |
| 2015 | 39.4 C (102.9 F) |
| 2016 | 38.9 C (102.0 F) |
| 2017 | 38.9 C (102.0 F) |
| 2018 | 40.0 C (104.0 F) |
| 2019 | 37.2 C (99.0 F) |
| 2020 | 37.8 C (100.0 F) |
| 2021 | 37.2 C (99.0 F) |
| 2022 | 40.0 C (104.0 F) |
| 2023 | 39.4 C (102.9 F) |
| 2024 | 37.2 C (99.0 F) |
| 2025 | 22.2 C (72.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1914 | -6.7 C (19.9 F) |
| 1915 | -21.1 C (-6.0 F) |
| 1916 | -24.4 C (-11.9 F) |
| 1917 | -37.2 C (-35.0 F) |
| 1918 | -28.9 C (-20.0 F) |
| 1919 | -27.8 C (-18.0 F) |
| 1920 | -20.6 C (-5.1 F) |
| 1921 | -16.1 C (3.0 F) |
| 1922 | -24.4 C (-11.9 F) |
| 1923 | -24.4 C (-11.9 F) |
| 1924 | -37.2 C (-35.0 F) |
| 1925 | -16.1 C (3.0 F) |
| 1926 | -17.8 C (0.0 F) |
| 1927 | -25.0 C (-13.0 F) |
| 1928 | -21.1 C (-6.0 F) |
| 1929 | -25.0 C (-13.0 F) |
| 1930 | -26.1 C (-15.0 F) |
| 1931 | -21.7 C (-7.1 F) |
| 1932 | -30.6 C (-23.1 F) |
| 1933 | -33.3 C (-27.9 F) |
| 1934 | -13.3 C (8.1 F) |
| 1935 | -22.2 C (-8.0 F) |
| 1936 | -19.4 C (-2.9 F) |
| 1937 | -36.7 C (-34.1 F) |
| 1938 | -16.7 C (1.9 F) |
| 1939 | -21.1 C (-6.0 F) |
| 1940 | -21.1 C (-6.0 F) |
| 1941 | -13.9 C (7.0 F) |
| 1942 | -22.8 C (-9.0 F) |
| 1943 | -19.4 C (-2.9 F) |
| 1944 | -15.6 C (3.9 F) |
| 1945 | -18.9 C (-2.0 F) |
| 1946 | -18.3 C (-0.9 F) |
| 1947 | -21.1 C (-6.0 F) |
| 1948 | -25.0 C (-13.0 F) |
| 1949 | -32.2 C (-26.0 F) |
| 1950 | -18.3 C (-0.9 F) |
| 1951 | -20.6 C (-5.1 F) |
| 1952 | -17.8 C (0.0 F) |
| 1953 | -14.4 C (6.1 F) |
| 1954 | -21.1 C (-6.0 F) |
| 1955 | -22.8 C (-9.0 F) |
| 1956 | -23.3 C (-9.9 F) |
| 1957 | -23.9 C (-11.0 F) |
| 1958 | -16.1 C (3.0 F) |
| 1959 | -22.8 C (-9.0 F) |
| 1960 | -22.2 C (-8.0 F) |
| 1961 | -21.7 C (-7.1 F) |
| 1962 | -27.2 C (-17.0 F) |
| 1963 | -28.3 C (-18.9 F) |
| 1964 | -18.3 C (-0.9 F) |
| 1965 | -21.1 C (-6.0 F) |
| 1966 | -17.8 C (0.0 F) |
| 1967 | -19.4 C (-2.9 F) |
| 1968 | -16.1 C (3.0 F) |
| 1969 | -17.8 C (0.0 F) |
| 1970 | -19.4 C (-2.9 F) |
| 1971 | -20.6 C (-5.1 F) |
| 1972 | -28.3 C (-18.9 F) |
| 1973 | -15.6 C (3.9 F) |
| 1974 | -23.9 C (-11.0 F) |
| 1975 | -21.1 C (-6.0 F) |
| 1976 | -15.6 C (3.9 F) |
| 1977 | -17.8 C (0.0 F) |
| 1978 | -16.1 C (3.0 F) |
| 1979 | -16.7 C (1.9 F) |
| 1980 | -12.8 C (9.0 F) |
| 1981 | -11.7 C (10.9 F) |
| 1982 | -15.0 C (5.0 F) |
| 1983 | -16.1 C (3.0 F) |
| 1984 | -19.4 C (-2.9 F) |
| 1985 | -23.3 C (-9.9 F) |
| 1986 | -16.7 C (1.9 F) |
| 1987 | -20.0 C (-4.0 F) |
| 1988 | -24.4 C (-11.9 F) |
| 1989 | -28.3 C (-18.9 F) |
| 1990 | -35.6 C (-32.1 F) |
| 1991 | -21.1 C (-6.0 F) |
| 1992 | -21.1 C (-6.0 F) |
| 1993 | -23.9 C (-11.0 F) |
| 1994 | -17.2 C (1.0 F) |
| 1995 | -17.2 C (1.0 F) |
| 1996 | -16.1 C (3.0 F) |
| 1997 | -18.9 C (-2.0 F) |
| 1998 | -27.2 C (-17.0 F) |
| 1999 | -16.7 C (1.9 F) |
| 2000 | -17.2 C (1.0 F) |
| 2001 | -16.7 C (1.9 F) |
| 2002 | -18.3 C (-0.9 F) |
| 2003 | -16.1 C (3.0 F) |
| 2004 | -13.3 C (8.1 F) |
| 2005 | -21.7 C (-7.1 F) |
| 2006 | -19.4 C (-2.9 F) |
| 2007 | -24.4 C (-11.9 F) |
| 2008 | -24.4 C (-11.9 F) |
| 2009 | -26.1 C (-15.0 F) |
| 2010 | -20.0 C (-4.0 F) |
| 2011 | -20.6 C (-5.1 F) |
| 2012 | -24.4 C (-11.9 F) |
| 2013 | -29.4 C (-20.9 F) |
| 2014 | -13.3 C (8.1 F) |
| 2015 | -23.9 C (-11.0 F) |
| 2016 | -25.6 C (-14.1 F) |
| 2017 | -18.3 C (-0.9 F) |
| 2018 | -15.0 C (5.0 F) |
| 2019 | -16.7 C (1.9 F) |
| 2020 | -17.8 C (0.0 F) |
| 2021 | -18.9 C (-2.0 F) |
| 2022 | -16.7 C (1.9 F) |
| 2023 | -16.1 C (3.0 F) |
| 2024 | -13.3 C (8.1 F) |
| 2025 | -6.7 C (19.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1914 | 0.3 mm (0.01 in) |
| 1915 | 8.9 mm (0.35 in) |
| 1916 | 25.4 mm (1.0 in) |
| 1917 | 17.8 mm (0.7 in) |
| 1918 | 19.1 mm (0.8 in) |
| 1919 | 24.1 mm (0.9 in) |
| 1920 | 17.8 mm (0.7 in) |
| 1921 | 25.4 mm (1.0 in) |
| 1922 | 68.6 mm (2.7 in) |
| 1923 | 30.5 mm (1.2 in) |
| 1924 | 16.5 mm (0.6 in) |
| 1925 | 25.4 mm (1.0 in) |
| 1926 | 16.5 mm (0.6 in) |
| 1927 | 40.6 mm (1.6 in) |
| 1928 | 10.2 mm (0.4 in) |
| 1929 | 5.1 mm (0.20 in) |
| 1930 | 25.4 mm (1.0 in) |
| 1931 | 13.0 mm (0.5 in) |
| 1932 | 12.7 mm (0.5 in) |
| 1933 | 27.9 mm (1.1 in) |
| 1934 | 12.7 mm (0.5 in) |
| 1935 | 12.7 mm (0.5 in) |
| 1936 | 17.8 mm (0.7 in) |
| 1937 | 30.5 mm (1.2 in) |
| 1938 | 0.0 mm (0.00 in) |
| 1939 | 19.1 mm (0.8 in) |
| 1940 | 19.1 mm (0.8 in) |
| 1941 | 26.4 mm (1.0 in) |
| 1942 | 22.9 mm (0.9 in) |
| 1943 | 24.1 mm (0.9 in) |
| 1944 | 20.3 mm (0.8 in) |
| 1945 | 15.2 mm (0.6 in) |
| 1946 | 25.9 mm (1.0 in) |
| 1947 | 20.6 mm (0.8 in) |
| 1948 | 24.4 mm (1.0 in) |
| 1949 | 20.6 mm (0.8 in) |
| 1950 | 19.6 mm (0.8 in) |
| 1951 | 38.1 mm (1.5 in) |
| 1952 | 22.9 mm (0.9 in) |
| 1953 | 25.4 mm (1.0 in) |
| 1954 | 12.7 mm (0.5 in) |
| 1955 | 17.0 mm (0.7 in) |
| 1956 | 18.0 mm (0.7 in) |
| 1957 | 30.5 mm (1.2 in) |
| 1958 | 29.2 mm (1.1 in) |
| 1959 | 10.2 mm (0.4 in) |
| 1960 | 15.2 mm (0.6 in) |
| 1961 | 17.0 mm (0.7 in) |
| 1962 | 17.5 mm (0.7 in) |
| 1963 | 14.7 mm (0.6 in) |
| 1964 | 19.8 mm (0.8 in) |
| 1965 | 20.1 mm (0.8 in) |
| 1966 | 10.7 mm (0.4 in) |
| 1967 | 16.0 mm (0.6 in) |
| 1968 | 15.2 mm (0.6 in) |
| 1969 | 26.7 mm (1.1 in) |
| 1970 | 36.1 mm (1.4 in) |
| 1971 | 15.0 mm (0.6 in) |
| 1972 | 17.8 mm (0.7 in) |
| 1973 | 16.5 mm (0.6 in) |
| 1974 | 20.8 mm (0.8 in) |
| 1975 | 17.8 mm (0.7 in) |
| 1976 | 22.9 mm (0.9 in) |
| 1977 | 20.3 mm (0.8 in) |
| 1978 | 34.3 mm (1.4 in) |
| 1979 | 38.1 mm (1.5 in) |
| 1980 | 20.3 mm (0.8 in) |
| 1981 | 10.4 mm (0.4 in) |
| 1982 | 18.0 mm (0.7 in) |
| 1983 | 15.7 mm (0.6 in) |
| 1984 | 19.3 mm (0.8 in) |
| 1985 | 23.6 mm (0.9 in) |
| 1986 | 14.0 mm (0.6 in) |
| 1987 | 29.7 mm (1.2 in) |
| 1988 | 23.6 mm (0.9 in) |
| 1989 | 102.9 mm (4.1 in) |
| 1990 | 13.0 mm (0.5 in) |
| 1991 | 13.5 mm (0.5 in) |
| 1992 | 11.4 mm (0.4 in) |
| 1993 | 11.4 mm (0.4 in) |
| 1994 | 26.7 mm (1.1 in) |
| 1995 | 17.8 mm (0.7 in) |
| 1996 | 16.3 mm (0.6 in) |
| 1997 | 22.9 mm (0.9 in) |
| 1998 | 20.8 mm (0.8 in) |
| 1999 | 16.0 mm (0.6 in) |
| 2000 | 17.0 mm (0.7 in) |
| 2001 | 9.7 mm (0.38 in) |
| 2002 | 21.1 mm (0.8 in) |
| 2003 | 17.8 mm (0.7 in) |
| 2004 | 18.3 mm (0.7 in) |
| 2005 | 28.4 mm (1.1 in) |
| 2006 | 22.9 mm (0.9 in) |
| 2007 | 16.5 mm (0.6 in) |
| 2008 | 14.0 mm (0.6 in) |
| 2009 | 13.7 mm (0.5 in) |
| 2010 | 34.3 mm (1.4 in) |
| 2011 | 19.1 mm (0.8 in) |
| 2012 | 22.6 mm (0.9 in) |
| 2013 | 15.7 mm (0.6 in) |
| 2014 | 25.4 mm (1.0 in) |
| 2015 | 34.5 mm (1.4 in) |
| 2016 | 26.4 mm (1.0 in) |
| 2017 | 11.7 mm (0.5 in) |
| 2018 | 31.8 mm (1.3 in) |
| 2019 | 17.8 mm (0.7 in) |
| 2020 | 8.4 mm (0.33 in) |
| 2021 | 43.2 mm (1.7 in) |
| 2022 | 17.8 mm (0.7 in) |
| 2023 | 20.3 mm (0.8 in) |
| 2024 | 12.7 mm (0.5 in) |
| 2025 | 0.0 mm (0.00 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1914 | 1.2 mm (0.05 in) |
| 1915 | 8.9 mm (0.35 in) |
| 1916 | 25.4 mm (1.0 in) |
| 1917 | 34.1 mm (1.3 in) |
| 1918 | 35.6 mm (1.4 in) |
| 1919 | 24.1 mm (0.9 in) |
| 1920 | 31.0 mm (1.2 in) |
| 1921 | 26.9 mm (1.1 in) |
| 1922 | 70.4 mm (2.8 in) |
| 1923 | 37.1 mm (1.5 in) |
| 1924 | 19.3 mm (0.8 in) |
| 1925 | 30.5 mm (1.2 in) |
| 1926 | 29.4 mm (1.2 in) |
| 1927 | 41.6 mm (1.6 in) |
| 1928 | 41.1 mm (1.6 in) |
| 1929 | 7.6 mm (0.30 in) |
| 1930 | 33.0 mm (1.3 in) |
| 1931 | 23.1 mm (0.9 in) |
| 1932 | 23.1 mm (0.9 in) |
| 1933 | 27.9 mm (1.1 in) |
| 1934 | 19.3 mm (0.8 in) |
| 1935 | 22.9 mm (0.9 in) |
| 1936 | 29.0 mm (1.1 in) |
| 1937 | 39.9 mm (1.6 in) |
| 1938 | 0.0 mm (0.00 in) |
| 1939 | 44.6 mm (1.8 in) |
| 1940 | 31.8 mm (1.3 in) |
| 1941 | 31.7 mm (1.2 in) |
| 1942 | 46.3 mm (1.8 in) |
| 1943 | 36.0 mm (1.4 in) |
| 1944 | 40.7 mm (1.6 in) |
| 1945 | 27.9 mm (1.1 in) |
| 1946 | 43.2 mm (1.7 in) |
| 1947 | 30.9 mm (1.2 in) |
| 1948 | 32.0 mm (1.3 in) |
| 1949 | 40.6 mm (1.6 in) |
| 1950 | 52.0 mm (2.0 in) |
| 1951 | 73.7 mm (2.9 in) |
| 1952 | 53.4 mm (2.1 in) |
| 1953 | 37.6 mm (1.5 in) |
| 1954 | 25.4 mm (1.0 in) |
| 1955 | 31.5 mm (1.2 in) |
| 1956 | 25.1 mm (1.0 in) |
| 1957 | 30.5 mm (1.2 in) |
| 1958 | 44.1 mm (1.7 in) |
| 1959 | 14.4 mm (0.6 in) |
| 1960 | 31.2 mm (1.2 in) |
| 1961 | 21.3 mm (0.8 in) |
| 1962 | 29.5 mm (1.2 in) |
| 1963 | 30.4 mm (1.2 in) |
| 1964 | 59.7 mm (2.4 in) |
| 1965 | 25.2 mm (1.0 in) |
| 1966 | 22.4 mm (0.9 in) |
| 1967 | 20.8 mm (0.8 in) |
| 1968 | 27.9 mm (1.1 in) |
| 1969 | 45.5 mm (1.8 in) |
| 1970 | 47.0 mm (1.9 in) |
| 1971 | 20.8 mm (0.8 in) |
| 1972 | 33.8 mm (1.3 in) |
| 1973 | 24.5 mm (1.0 in) |
| 1974 | 30.2 mm (1.2 in) |
| 1975 | 42.7 mm (1.7 in) |
| 1976 | 25.7 mm (1.0 in) |
| 1977 | 44.1 mm (1.7 in) |
| 1978 | 45.8 mm (1.8 in) |
| 1979 | 50.8 mm (2.0 in) |
| 1980 | 42.4 mm (1.7 in) |
| 1981 | 18.0 mm (0.7 in) |
| 1982 | 40.1 mm (1.6 in) |
| 1983 | 36.8 mm (1.4 in) |
| 1984 | 22.8 mm (0.9 in) |
| 1985 | 31.5 mm (1.2 in) |
| 1986 | 20.3 mm (0.8 in) |
| 1987 | 47.3 mm (1.9 in) |
| 1988 | 42.4 mm (1.7 in) |
| 1989 | 154.7 mm (6.1 in) |
| 1990 | 26.3 mm (1.0 in) |
| 1991 | 30.3 mm (1.2 in) |
| 1992 | 29.2 mm (1.1 in) |
| 1993 | 21.6 mm (0.9 in) |
| 1994 | 26.7 mm (1.1 in) |
| 1995 | 24.6 mm (1.0 in) |
| 1996 | 26.6 mm (1.0 in) |
| 1997 | 42.7 mm (1.7 in) |
| 1998 | 57.9 mm (2.3 in) |
| 1999 | 26.2 mm (1.0 in) |
| 2000 | 30.7 mm (1.2 in) |
| 2001 | 11.1 mm (0.4 in) |
| 2002 | 27.2 mm (1.1 in) |
| 2003 | 36.3 mm (1.4 in) |
| 2004 | 31.7 mm (1.2 in) |
| 2005 | 34.5 mm (1.4 in) |
| 2006 | 40.5 mm (1.6 in) |
| 2007 | 20.8 mm (0.8 in) |
| 2008 | 38.2 mm (1.5 in) |
| 2009 | 18.8 mm (0.7 in) |
| 2010 | 47.8 mm (1.9 in) |
| 2011 | 15.2 mm (0.6 in) |
| 2012 | 29.5 mm (1.2 in) |
| 2013 | 16.7 mm (0.7 in) |
| 2014 | 32.2 mm (1.3 in) |
| 2015 | 34.5 mm (1.4 in) |
| 2016 | 53.6 mm (2.1 in) |
| 2017 | 27.3 mm (1.1 in) |
| 2018 | 46.6 mm (1.8 in) |
| 2019 | 36.4 mm (1.4 in) |
| 2020 | 17.1 mm (0.7 in) |
| 2021 | 53.6 mm (2.1 in) |
| 2022 | 29.5 mm (1.2 in) |
| 2023 | 25.4 mm (1.0 in) |
| 2024 | 17.5 mm (0.7 in) |
| 2025 | n/a |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1914 | 92 days |
| 1915 | 199 days |
| 1916 | 113 days |
| 1917 | 205 days |
| 1918 | 54 days |
| 1919 | 59 days |
| 1920 | 38 days |
| 1921 | 151 days |
| 1922 | 54 days |
| 1923 | 57 days |
| 1924 | 206 days |
| 1925 | 23 days |
| 1926 | 92 days |
| 1927 | 87 days |
| 1928 | 75 days |
| 1929 | 177 days |
| 1930 | 102 days |
| 1931 | 131 days |
| 1932 | 195 days |
| 1933 | 183 days |
| 1934 | 110 days |
| 1935 | 155 days |
| 1936 | 46 days |
| 1937 | 61 days |
| 1938 | 31 days |
| 1939 | 138 days |
| 1940 | 61 days |
| 1941 | 46 days |
| 1942 | 168 days |
| 1943 | 96 days |
| 1944 | 50 days |
| 1945 | 48 days |
| 1946 | 52 days |
| 1947 | 73 days |
| 1948 | 103 days |
| 1949 | 141 days |
| 1950 | 59 days |
| 1951 | 97 days |
| 1952 | 62 days |
| 1953 | 84 days |
| 1954 | 152 days |
| 1955 | 140 days |
| 1956 | 95 days |
| 1957 | 82 days |
| 1958 | 83 days |
| 1959 | 99 days |
| 1960 | 62 days |
| 1961 | 32 days |
| 1962 | 75 days |
| 1963 | 45 days |
| 1964 | 82 days |
| 1965 | 74 days |
| 1966 | 70 days |
| 1967 | 71 days |
| 1968 | 71 days |
| 1969 | 63 days |
| 1970 | 65 days |
| 1971 | 47 days |
| 1972 | 100 days |
| 1973 | 61 days |
| 1974 | 83 days |
| 1975 | 37 days |
| 1976 | 107 days |
| 1977 | 66 days |
| 1978 | 66 days |
| 1979 | 24 days |
| 1980 | 30 days |
| 1981 | 80 days |
| 1982 | 72 days |
| 1983 | 31 days |
| 1984 | 38 days |
| 1985 | 61 days |
| 1986 | 81 days |
| 1987 | 92 days |
| 1988 | 136 days |
| 1989 | 34 days |
| 1990 | 59 days |
| 1991 | 44 days |
| 1992 | 42 days |
| 1993 | 44 days |
| 1994 | 52 days |
| 1995 | 82 days |
| 1996 | 35 days |
| 1997 | 37 days |
| 1998 | 39 days |
| 1999 | 77 days |
| 2000 | 96 days |
| 2001 | 81 days |
| 2002 | 54 days |
| 2003 | 43 days |
| 2004 | 33 days |
| 2005 | 93 days |
| 2006 | 45 days |
| 2007 | 48 days |
| 2008 | 70 days |
| 2009 | 66 days |
| 2010 | 46 days |
| 2011 | 84 days |
| 2012 | 127 days |
| 2013 | 82 days |
| 2014 | 33 days |
| 2015 | 38 days |
| 2016 | 64 days |
| 2017 | 37 days |
| 2018 | 107 days |
| 2019 | 56 days |
| 2020 | 43 days |
| 2021 | 100 days |
| 2022 | 62 days |
| 2023 | 65 days |
| 2024 | 22 days |
| 2025 | 1 day |
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
72 years with a frostAcross 72 years with a frost, the median last spring frost at Imlay falls on 20 May and the median first autumn frost on 23 September, which leaves a median of 125 days between them.
In 1988 to 2023 the median growing season was 128 days. That is 8 days more than in 1918 to 1962.
Fitted over all years, the growing season changes by +1.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1918 to 1962) | Recent period (1988 to 2023) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 20 May | 24 May | 19 May | 5 days earlier | -0.5 days per decade |
| First autumn frost | 23 September | 21 September | 26 September | 5 days later | +0.7 days per decade |
| Growing days | 125 days | 120 days | 128 days | 8 days more | +1.1 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
78 years, 1916 to 2023A day with at least 19.0 mm (0.7 in) of rain is expected about once in 2 years. A day with at least 50.7 mm (2.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 19.0 mm (0.7 in) | |
| 5 years | 26.2 mm (1.0 in) | |
| 10 years | 31.5 mm (1.2 in) | |
| 25 years | 38.7 mm (1.5 in) | |
| 50 years | 44.5 mm (1.8 in) | |
| 100 years | 50.7 mm (2.0 in) | Longer than the 78 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, 78 years of values from 1916 to 2023.
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: 68.6 mm (2.7 in) in 1922; 40.6 mm (1.6 in) in 1927; 38.1 mm (1.5 in) in 1951.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Imlay, at 2004. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2004 ran 0.5 C (0.8 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2004 | -0.5 | -0.8 | 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.
Climate Twins
2005 to 2023 against 1961 to 1990Over 2005 to 2023, Imlay had a mean temperature of 10.1 C (50.2 F) and 210.0 mm (8.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Garrison (United States, 401 km away), Mtn Home (United States, 341 km away) and Cedar City AP (United States, 546 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Garrison | United States | 401 km (249 mi) | 10.2 C (50.3 F) | 195.5 mm (7.7 in) | 0.64 |
| Mtn Home | United States | 341 km (212 mi) | 10.2 C (50.3 F) | 279.2 mm (11.0 in) | 0.66 |
| Cedar City AP | United States | 546 km (339 mi) | 10.3 C (50.5 F) | 292.4 mm (11.5 in) | 0.71 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).