September
September · May · August
United States · 1991–2020
September leads for comfortable weather in Villa Grove: typically 26.4°C by day, 13.2°C at night, with 81 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · August
August · July · June
October · April · May
The weakest month is January, scoring 5 against September’s 80 — days reach only 1.5°C, 22° 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 | 1.5°C | -7.3°C | 60 mm | 6.8 | 9 h 38 | 5 | Strong coverage |
| February | 4.2°C | -5.6°C | 53 mm | 6.4 | 10 h 38 | 5 | Strong coverage |
| March | 10.6°C | -0.4°C | 74 mm | 8 | 11 h 49 | 18 | Strong coverage |
| April | 18.1°C | 5.5°C | 118 mm | 9.9 | 13 h 12 | 46 | Strong coverage |
| May | 23.8°C | 12°C | 108 mm | 10.5 | 14 h 21 | 77 | Strong coverage |
| June | 28.5°C | 17.2°C | 121 mm | 9 | 14 h 59 | 64 | Strong coverage |
| July | 30°C | 18.7°C | 111 mm | 7.8 | 14 h 44 | 59 | Strong coverage |
| August | 29.2°C | 17.3°C | 74 mm | 6.2 | 13 h 44 | 70 | Strong coverage |
| September | 26.4°C | 13.2°C | 81 mm | 6.2 | 12 h 24 | 80 | Strong coverage |
| October | 19.3°C | 6.6°C | 84 mm | 7.4 | 11 h 05 | 59 | Strong coverage |
| November | 10.8°C | 0.5°C | 87 mm | 7.6 | 9 h 55 | 19 | Strong coverage |
| December | 4.3°C | -3.9°C | 64 mm | 7.1 | 9 h 21 | 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 | 22.8°C23 Jan 1909 | -31.7°C7 Jan 1912 | 68 mm11 Jan 2020 | 228 mm1950 · driest 4 mm in 1986 | 99 |
| February | 23.3°C27 Feb 2024 | -30.6°C13 Feb 1905 | 92 mm21 Feb 2018 | 157 mm1990 · driest 7 mm in 1947 | 98 |
| March | 30.6°C23 Mar 1910 | -23.3°C6 Mar 1960 | 63 mm31 Mar 2022 | 225 mm1898 · driest 10 mm in 1910 | 99 |
| April | 33.3°C29 Apr 1899 | -9.4°C7 Apr 1990 | 78 mm19 Apr 2013 | 243 mm1994 · driest 16 mm in 1971 | 97 |
| May | 36.7°C26 May 1911 | -3.3°C10 May 1966 | 96 mm8 May 1961 | 334 mm1996 · driest 17 mm in 1992 | 98 |
| June | 40.6°C26 Jun 1954 | 1.1°C6 Jun 1894 | 101 mm25 Jun 1900 | 256 mm2008 · driest 12 mm in 1988 | 98 |
| July | 45.0°C14 Jul 1954 | 6.7°C11 Jul 1898 | 99 mm10 Jul 2003 | 496 mm1992 · driest 16 mm in 1947 | 98 |
| August | 40.0°C2 Aug 1901 | 5.0°C26 Aug 1910 | 135 mm2 Aug 1978 | 233 mm1981 · driest 5 mm in 2013 | 96 |
| September | 39.4°C7 Sep 1899 | -6.1°C30 Sep 1899 | 95 mm9 Sep 2007 | 236 mm1911 · driest 3 mm in 1979 | 96 |
| October | 33.9°C14 Oct 1899 | -7.8°C29 Oct 1910 | 83 mm11 Oct 1949 | 189 mm2009 · driest 4 mm in 1964 | 97 |
| November | 27.8°C1 Nov 1950 | -21.7°C25 Nov 1950 | 77 mm18 Nov 1985 | 287 mm1985 · driest 2 mm in 1904 | 95 |
| December | 21.7°C4 Dec 2012 | -32.2°C22 Dec 1989 | 107 mm27 Dec 2015 | 211 mm2015 · driest 8 mm in 1976 | 96 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 2 | 3 |
| February | 0 | 0 | 23 | 2 | 3 |
| March | <1 | 0 | 18 | 3 | 1 |
| April | 5 | <1 | 5 | 4 | <1 |
| May | 15 | 4 | <1 | 4 | 0 |
| June | 25 | 13 | 0 | 4 | 0 |
| July | 29 | 17 | 0 | 4 | 0 |
| August | 28 | 13 | 0 | 2 | 0 |
| September | 19 | 7 | <1 | 3 | 0 |
| October | 7 | 1 | 4 | 3 | 0 |
| November | <1 | 0 | 15 | 3 | <1 |
| December | 0 | 0 | 24 | 2 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 23% | 6% | 21% | -1.7–5.0°C |
| February | <1% | 22% | 7% | 22% | -0.4–7.6°C |
| March | 10% | 29% | 10% | 32% | 7.4–14.8°C |
| April | 28% | 33% | 12% | 40% | 15.9–20.9°C |
| May | 57% | 32% | 11% | 39% | 21.5–27.5°C |
| June | 72% | 29% | 12% | 31% | 26.8–31.4°C |
| July | 76% | 24% | 11% | 20% | 28.6–32.7°C |
| August | 80% | 22% | 10% | 19% | 27.9–32.1°C |
| September | 74% | 23% | 10% | 19% | 24.6–29.0°C |
| October | 44% | 22% | 8% | 22% | 17.6–23.0°C |
| November | 8% | 24% | 10% | 22% | 7.7–13.8°C |
| December | <1% | 24% | 7% | 23% | 0.7–7.7°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