September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Patoka: typically 26.7°C by day, 14.2°C at night, with 90 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
July · August · June
October · April · September
The weakest month is January, scoring 5 against September’s 79 — days reach only 3.4°C, 21° 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 | 3.4°C | -5.6°C | 78 mm | 7.2 | 9 h 44 | 5 | Strong coverage |
| February | 6.2°C | -3.8°C | 65 mm | 6.6 | 10 h 41 | 5 | Strong coverage |
| March | 12.1°C | 1.1°C | 95 mm | 8.2 | 11 h 50 | 23 | Strong coverage |
| April | 18.9°C | 6.9°C | 119 mm | 9.2 | 13 h 09 | 51 | Strong coverage |
| May | 24.2°C | 12.9°C | 126 mm | 9.9 | 14 h 16 | 77 | Strong coverage |
| June | 29°C | 18°C | 129 mm | 8.7 | 14 h 52 | 60 | Strong coverage |
| July | 30.8°C | 19.9°C | 103 mm | 7.4 | 14 h 38 | 55 | Strong coverage |
| August | 30.2°C | 18.8°C | 98 mm | 6.9 | 13 h 40 | 61 | Strong coverage |
| September | 26.7°C | 14.2°C | 90 mm | 6 | 12 h 23 | 79 | Strong coverage |
| October | 20.2°C | 7.7°C | 88 mm | 7.2 | 11 h 07 | 63 | Strong coverage |
| November | 12.2°C | 1.7°C | 101 mm | 7.7 | 10 h 00 | 24 | Strong coverage |
| December | 5.8°C | -3.1°C | 74 mm | 7.5 | 9 h 28 | 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 | 21.7°C24 Jan 1943 | -30.6°C19 Jan 1994 | 68 mm13 Jan 2013 | 211 mm2005 · driest 3 mm in 1986 | 70 |
| February | 25.6°C29 Feb 1972 | -30.6°C10 Feb 1982 | 73 mm11 Feb 2009 | 148 mm2022 · driest 9 mm in 1996 | 70 |
| March | 32.2°C23 Mar 2026 | -22.2°C5 Mar 1978 | 97 mm19 Mar 2008 | 258 mm2008 · driest 21 mm in 2001 | 70 |
| April | 32.8°C29 Apr 1987 | -6.7°C7 Apr 1990 | 150 mm5 Apr 2025 | 379 mm2025 · driest 26 mm in 1976 | 71 |
| May | 37.8°C29 May 1944 | -0.6°C1 May 1960 | 125 mm19 May 2026 | 383 mm1995 · driest 25 mm in 2005 | 71 |
| June | 40.0°C29 Jun 2012 | 3.3°C3 Jun 1969 | 101 mm30 Jun 1965 | 271 mm1970 · driest 7 mm in 1959 | 71 |
| July | 40.6°C8 Jul 2012 | 8.9°C4 Jul 1967 | 111 mm10 Jul 1967 | 339 mm2024 · driest 6 mm in 1943 | 71 |
| August | 40.6°C20 Aug 1983 | 6.7°C13 Aug 1964 | 125 mm4 Aug 1998 | 293 mm2019 · driest 9 mm in 2025 | 70 |
| September | 37.8°C6 Sep 1960 | 0.6°C23 Sep 1974 | 162 mm9 Sep 2018 | 285 mm2018 · driest 8 mm in 1995 | 70 |
| October | 34.4°C2 Oct 2019 | -6.1°C24 Oct 1981 | 101 mm19 Oct 2025 | 263 mm1983 · driest 4 mm in 1944 | 71 |
| November | 27.8°C2 Nov 1987 | -16.7°C17 Nov 1959 | 123 mm14 Nov 1993 | 302 mm1985 · driest 7 mm in 1976 | 71 |
| December | 23.3°C2 Dec 1982 | -28.9°C22 Dec 1989 | 109 mm21 Dec 1967 | 269 mm1967 · driest 17 mm in 1958 | 72 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 26 | 3 | 2 |
| February | 0 | 0 | 22 | 2 | 2 |
| March | 1 | 0 | 15 | 3 | <1 |
| April | 6 | <1 | 3 | 4 | 0 |
| May | 16 | 4 | 0 | 4 | 0 |
| June | 26 | 14 | 0 | 4 | 0 |
| July | 29 | 20 | 0 | 4 | 0 |
| August | 29 | 17 | 0 | 3 | 0 |
| September | 21 | 8 | 0 | 3 | 0 |
| October | 8 | 1 | 2 | 3 | 0 |
| November | <1 | 0 | 13 | 3 | <1 |
| December | 0 | 0 | 23 | 3 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 22% | 7% | 22% | 0.5–6.9°C |
| February | 2% | 23% | 7% | 24% | 1.7–9.8°C |
| March | 14% | 28% | 11% | 32% | 9.3–15.9°C |
| April | 35% | 31% | 12% | 38% | 17.0–21.7°C |
| May | 58% | 31% | 13% | 38% | 22.1–27.6°C |
| June | 72% | 28% | 12% | 31% | 27.7–31.4°C |
| July | 76% | 23% | 10% | 20% | 29.6–33.3°C |
| August | 79% | 22% | 9% | 20% | 28.8–32.1°C |
| September | 75% | 21% | 9% | 18% | 24.9–29.3°C |
| October | 47% | 22% | 9% | 23% | 18.1–22.5°C |
| November | 11% | 24% | 9% | 23% | 9.3–15.4°C |
| December | <1% | 24% | 9% | 25% | 2.9–9.1°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