May
May · June · September
United States · 1991–2020
May leads for comfortable weather in Fort Wilson: typically 23.6°C by day, 7.8°C at night, with 30 mm of rain. Based on measured 1991–2020 NOAA station history.
May · June · September
July · August · June
October · May · April
The weakest month is January, scoring 5 against May’s 84 — days reach only 4.2°C, 20° below the 24°C the score treats as ideal.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 4.2°C | -5.3°C | 36 mm | 7.3 | 9 h 14 | 5 | Good coverage |
| February | 9.2°C | -3.3°C | 21 mm | 4.9 | 10 h 24 | 17 | Strong coverage |
| March | 14.9°C | 0.3°C | 26 mm | 6.3 | 11 h 47 | 40 | Strong coverage |
| April | 18.7°C | 3°C | 19 mm | 4.5 | 13 h 23 | 60 | Strong coverage |
| May | 23.6°C | 7.8°C | 30 mm | 4.7 | 14 h 43 | 84 | Strong coverage |
| June | 27.7°C | 11.6°C | 19 mm | 3.2 | 15 h 28 | 82 | Strong coverage |
| July | 33.6°C | 15.5°C | 5 mm | 1.3 | 15 h 10 | 68 | Strong coverage |
| August | 32.6°C | 14.1°C | 3 mm | 0.7 | 14 h 00 | 70 | Strong coverage |
| September | 27.2°C | 9.2°C | 7 mm | 1.8 | 12 h 27 | 79 | Strong coverage |
| October | 19.8°C | 3.2°C | 17 mm | 3.5 | 10 h 55 | 65 | Strong coverage |
| November | 11.2°C | -1.9°C | 23 mm | 5.1 | 9 h 34 | 25 | Good coverage |
| December | 4.8°C | -5°C | 41 mm | 7.4 | 8 h 54 | 5 | Good coverage |
What has changed
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.9°C6 Jan 1923 | -32.2°C3 Jan 1910 | 58 mm10 Jan 1952 | 113 mm1970 · driest 0 mm in 1985 | 128 |
| February | 23.3°C25 Feb 1896 | -30.6°C5 Feb 1989 | 36 mm20 Feb 1901 | 121 mm1901 · driest 1 mm in 1913 | 127 |
| March | 28.3°C30 Mar 1966 | -20.6°C14 Mar 1906 | 29 mm28 Mar 1905 | 118 mm1904 · driest 0 mm in 1898 | 129 |
| April | 35.0°C26 Apr 1895 | -8.9°C5 Apr 1895 | 29 mm4 Apr 2024 | 88 mm1978 · driest 0 mm in 1949 | 128 |
| May | 37.8°C25 May 1966 | -6.1°C11 May 1916 | 39 mm22 May 1998 | 139 mm1998 · driest 0 mm in 1924 | 127 |
| June | 41.7°C19 Jun 1940 | -2.8°C10 Jun 1896 | 41 mm28 Jun 1970 | 76 mm1913 · driest 0 mm in 2025 | 124 |
| July | 43.9°C23 Jul 1905 | 2.2°C3 Jul 1912 | 38 mm25 Jul 1913 | 62 mm1913 · driest 0 mm in 2016 | 129 |
| August | 43.3°C24 Aug 1894 | 0.0°C30 Aug 1912 | 32 mm11 Aug 1941 | 65 mm1979 · driest 0 mm in 1935 | 128 |
| September | 38.9°C1 Sep 1967 | -5.0°C26 Sep 1934 | 36 mm23 Sep 1917 | 70 mm1959 · driest 0 mm in 1943 | 129 |
| October | 35.6°C1 Oct 1896 | -11.7°C30 Oct 2019 | 30 mm4 Oct 1923 | 95 mm1956 · driest 0 mm in 1917 | 129 |
| November | 25.6°C1 Nov 1901 | -18.9°C15 Nov 1955 | 27 mm4 Nov 1944 | 80 mm1988 · driest 0 mm in 2020 | 128 |
| December | 19.4°C10 Dec 1939 | -36.1°C25 Dec 1924 | 39 mm16 Dec 2024 | 111 mm2005 · driest 0 mm in 2017 | 128 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 | 2 |
| February | 0 | 0 | 23 | <1 | 1 |
| March | <1 | 0 | 16 | <1 | <1 |
| April | 3 | <1 | 7 | <1 | 0 |
| May | 13 | 4 | 1 | <1 | 0 |
| June | 20 | 11 | 0 | <1 | 0 |
| July | 29 | 25 | 0 | <1 | 0 |
| August | 29 | 25 | 0 | 0 | 0 |
| September | 21 | 9 | <1 | <1 | 0 |
| October | 5 | <1 | 8 | <1 | 0 |
| November | 0 | 0 | 19 | <1 | <1 |
| December | 0 | 0 | 26 | <1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 24% | 3% | 26% | -1.5–6.7°C |
| February | <1% | 21% | 2% | 20% | 3.2–11.4°C |
| March | 10% | 18% | 2% | 15% | 10.5–16.6°C |
| April | 40% | 16% | 1% | 13% | 16.4–22.0°C |
| May | 70% | 15% | 2% | 12% | 21.3–26.8°C |
| June | 85% | 13% | 2% | 9% | 25.8–30.9°C |
| July | 96% | 4% | <1% | 1% | 31.6–35.8°C |
| August | 96% | 4% | <1% | 2% | 30.2–35.1°C |
| September | 88% | 7% | <1% | 5% | 24.9–29.5°C |
| October | 49% | 12% | 2% | 10% | 17.1–22.7°C |
| November | 2% | 20% | 3% | 20% | 7.7–13.2°C |
| December | 0% | 23% | 3% | 25% | 0.2–6.9°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page