May
May · September · June
United States · 1991–2020
May leads for comfortable weather in Saint Francis: typically 23.5°C by day, 7.6°C at night, with 62 mm of rain. Based on measured 1991–2020 NOAA station history.
May · September · June
June · August · July
October · April · May
The weakest month is January, scoring 5 against May’s 78 — days reach only 6.3°C, 18° below the 24°C the score treats as ideal, and nights drop to -9.3°C.
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 | 6.3°C | -9.3°C | 9 mm | 1.8 | 9 h 38 | 5 | Strong coverage |
| February | 7.9°C | -8°C | 11 mm | 2.3 | 10 h 38 | 6 | Strong coverage |
| March | 13.8°C | -3.3°C | 20 mm | 3.2 | 11 h 49 | 33 | Strong coverage |
| April | 18.1°C | 1.4°C | 41 mm | 5.1 | 13 h 12 | 54 | Strong coverage |
| May | 23.5°C | 7.6°C | 62 mm | 6.5 | 14 h 21 | 78 | Strong coverage |
| June | 30.2°C | 13.9°C | 62 mm | 6.8 | 14 h 58 | 70 | Strong coverage |
| July | 33.3°C | 16.9°C | 73 mm | 7.2 | 14 h 43 | 57 | Strong coverage |
| August | 32°C | 15.6°C | 73 mm | 6.1 | 13 h 44 | 64 | Strong coverage |
| September | 27.6°C | 10°C | 38 mm | 3.4 | 12 h 24 | 78 | Strong coverage |
| October | 20.1°C | 2.1°C | 33 mm | 3.8 | 11 h 05 | 63 | Strong coverage |
| November | 12.6°C | -4.2°C | 13 mm | 2.5 | 9 h 56 | 28 | Strong coverage |
| December | 7.1°C | -8.7°C | 11 mm | 1.9 | 9 h 22 | 5 | Strong 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 | 27.2°C27 Jan 1982 | -33.3°C12 Jan 1912 | 29 mm20 Jan 1990 | 46 mm1944 · driest 0 mm in 2016 | 114 |
| February | 28.3°C17 Feb 1970 | -33.3°C15 Feb 2021 | 49 mm18 Feb 1984 | 69 mm1960 · driest 0 mm in 1970 | 116 |
| March | 36.1°C26 Mar 2026 | -28.9°C3 Mar 1960 | 56 mm14 Mar 2021 | 128 mm1981 · driest 0 mm in 1994 | 115 |
| April | 36.1°C28 Apr 1910 | -17.8°C2 Apr 1936 | 66 mm24 Apr 1932 | 151 mm1944 · driest 0 mm in 1992 | 117 |
| May | 39.4°C30 May 2000 | -8.3°C1 May 1909 | 115 mm27 May 1915 | 287 mm1923 · driest 6 mm in 1966 | 118 |
| June | 43.3°C25 Jun 2012 | 0.6°C5 Jun 1998 | 84 mm9 Jun 1974 | 194 mm1927 · driest 3 mm in 1952 | 119 |
| July | 43.9°C24 Jul 1936 | 5.0°C4 Jul 1915 | 80 mm23 Jul 1929 | 178 mm1926 · driest 6 mm in 2002 | 118 |
| August | 43.3°C2 Aug 1938 | 0.6°C26 Aug 1910 | 81 mm22 Aug 1933 | 283 mm1933 · driest 3 mm in 1919 | 118 |
| September | 40.6°C5 Sep 1931 | -7.8°C25 Sep 1926 | 69 mm2 Sep 1920 | 137 mm1951 · driest 0 mm in 2005 | 117 |
| October | 40.0°C5 Oct 1947 | -17.8°C28 Oct 2020 | 104 mm19 Oct 1908 | 125 mm1946 · driest 0 mm in 1922 | 117 |
| November | 31.7°C10 Nov 1927 | -22.8°C14 Nov 1940 | 31 mm9 Nov 2024 | 102 mm1946 · driest 0 mm in 2021 | 117 |
| December | 26.7°C3 Dec 2021 | -35.0°C22 Dec 1989 | 31 mm4 Dec 1924 | 79 mm1913 · driest 0 mm in 1945 | 117 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 2 |
| February | <1 | 0 | 27 | <1 | 2 |
| March | 3 | <1 | 23 | <1 | 1 |
| April | 6 | 1 | 11 | 1 | <1 |
| May | 14 | 6 | 2 | 2 | <1 |
| June | 25 | 17 | 0 | 2 | 0 |
| July | 29 | 24 | 0 | 2 | 0 |
| August | 29 | 22 | 0 | 2 | 0 |
| September | 21 | 12 | <1 | 1 | 0 |
| October | 9 | 3 | 10 | 1 | <1 |
| November | 2 | <1 | 25 | <1 | 1 |
| December | 0 | 0 | 30 | <1 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 3% | 7% | <1% | 2% | 1.6–10.2°C |
| February | 8% | 9% | <1% | 4% | 4.1–12.8°C |
| March | 24% | 13% | 2% | 9% | 9.3–17.4°C |
| April | 45% | 18% | 4% | 17% | 15.7–21.7°C |
| May | 62% | 25% | 7% | 29% | 21.2–26.5°C |
| June | 74% | 25% | 8% | 26% | 27.0–33.1°C |
| July | 78% | 22% | 8% | 21% | 31.2–36.2°C |
| August | 80% | 20% | 6% | 15% | 29.7–34.6°C |
| September | 81% | 14% | 4% | 10% | 24.9–31.0°C |
| October | 60% | 11% | 3% | 7% | 18.1–24.8°C |
| November | 20% | 9% | 2% | 4% | 9.8–16.0°C |
| December | 4% | 8% | <1% | 3% | 3.4–10.8°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