September
September · August · May
United States · 1991–2020
September leads for comfortable weather in Foresman: typically 25.6°C by day, 11.3°C at night, with 79 mm of rain. Based on measured 1991–2020 NOAA station history.
September · August · May
July · August · June
October · September · May
The weakest month is January, scoring 5 against September’s 79 — days reach only 0.7°C, 23° 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 | 0.7°C | -8.6°C | 55 mm | 7 | 9 h 34 | 5 | Strong coverage |
| February | 3.2°C | -6.8°C | 49 mm | 6.8 | 10 h 36 | 5 | Strong coverage |
| March | 9.5°C | -1.7°C | 65 mm | 7.7 | 11 h 49 | 14 | Strong coverage |
| April | 16.8°C | 4.1°C | 101 mm | 9.7 | 13 h 13 | 41 | Strong coverage |
| May | 22.9°C | 10.6°C | 120 mm | 10.6 | 14 h 24 | 70 | Strong coverage |
| June | 27.7°C | 15.8°C | 122 mm | 9.8 | 15 h 03 | 68 | Strong coverage |
| July | 28.9°C | 17°C | 109 mm | 8.3 | 14 h 48 | 65 | Strong coverage |
| August | 28.1°C | 15.7°C | 93 mm | 7 | 13 h 47 | 73 | Strong coverage |
| September | 25.6°C | 11.3°C | 79 mm | 6.4 | 12 h 25 | 79 | Strong coverage |
| October | 18.6°C | 5.3°C | 77 mm | 7.6 | 11 h 03 | 55 | Strong coverage |
| November | 10.3°C | -0.2°C | 77 mm | 7.8 | 9 h 52 | 17 | Strong coverage |
| December | 3.5°C | -5.4°C | 60 mm | 7.5 | 9 h 17 | 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 | 20.0°C20 Jan 1906 | -31.1°C20 Jan 1985 | 55 mm30 Jan 1982 | 188 mm1916 · driest 1 mm in 2022 | 121 |
| February | 23.3°C27 Feb 2024 | -30.6°C26 Feb 1963 | 75 mm26 Feb 1936 | 182 mm1908 · driest 0 mm in 2026 | 121 |
| March | 31.1°C27 Mar 2026 | -24.4°C1 Mar 1960 | 98 mm11 Mar 1990 | 184 mm1904 · driest 7 mm in 1981 | 120 |
| April | 32.2°C11 Apr 1930 | -13.9°C7 Apr 1982 | 95 mm12 Apr 1994 | 231 mm2013 · driest 18 mm in 1971 | 120 |
| May | 36.1°C29 May 2018 | -4.4°C9 May 2020 | 122 mm28 May 2000 | 323 mm1943 · driest 10 mm in 1934 | 120 |
| June | 40.0°C1 Jun 1934 | 1.7°C22 Jun 1992 | 109 mm26 Jun 1978 | 297 mm1958 · driest 6 mm in 1988 | 120 |
| July | 43.9°C14 Jul 1936 | 5.6°C6 Jul 1972 | 123 mm18 Jul 1939 | 282 mm1992 · driest 7 mm in 1914 | 119 |
| August | 39.4°C9 Aug 1934 | 1.7°C29 Aug 1965 | 104 mm14 Aug 1926 | 240 mm1977 · driest 14 mm in 1996 | 120 |
| September | 37.8°C9 Sep 1933 | -3.9°C23 Sep 1995 | 98 mm15 Sep 1965 | 300 mm1926 · driest 0 mm in 1979 | 120 |
| October | 33.9°C4 Oct 2025 | -7.8°C30 Oct 1925 | 79 mm22 Oct 1983 | 226 mm2001 · driest 5 mm in 2024 | 120 |
| November | 26.1°C9 Nov 2023 | -19.4°C28 Nov 1930 | 103 mm3 Nov 1936 | 221 mm1985 · driest 2 mm in 1904 | 120 |
| December | 21.7°C3 Dec 1982 | -30.0°C22 Dec 1989 | 55 mm18 Dec 1924 | 197 mm1924 · driest 2 mm in 1958 | 120 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 2 | 4 |
| February | 0 | 0 | 25 | 1 | 4 |
| March | <1 | <1 | 21 | 2 | 2 |
| April | 4 | <1 | 7 | 3 | <1 |
| May | 12 | 4 | <1 | 4 | 0 |
| June | 24 | 10 | 0 | 4 | 0 |
| July | 28 | 13 | 0 | 4 | 0 |
| August | 27 | 10 | 0 | 3 | 0 |
| September | 17 | 6 | <1 | 3 | 0 |
| October | 6 | <1 | 5 | 3 | 0 |
| November | <1 | 0 | 16 | 3 | <1 |
| December | 0 | 0 | 26 | 2 | 3 |
The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 86); on 2011–2025 it is May (83). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 23% | 6% | 23% | -3.0–4.8°C |
| February | <1% | 23% | 5% | 22% | -1.2–7.3°C |
| March | 7% | 28% | 8% | 33% | 5.9–13.5°C |
| April | 22% | 33% | 11% | 43% | 13.7–19.0°C |
| May | 48% | 33% | 11% | 43% | 19.7–25.6°C |
| June | 68% | 30% | 12% | 36% | 25.6–30.1°C |
| July | 75% | 25% | 11% | 25% | 27.6–32.3°C |
| August | 76% | 23% | 9% | 22% | 26.7–30.8°C |
| September | 68% | 23% | 9% | 23% | 23.4–28.0°C |
| October | 36% | 23% | 8% | 25% | 16.3–22.2°C |
| November | 6% | 26% | 8% | 26% | 6.8–13.1°C |
| December | <1% | 25% | 6% | 26% | -0.2–7.0°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