May
May · October · September
United States · 1991–2020
May leads for comfortable weather in Summertown: typically 26.4°C by day, 14.9°C at night, with 168 mm of rain. Based on measured 1991–2020 NOAA station history.
May · October · September
August · June · July
October · April · November
The weakest month is January, scoring 5 against May’s 68 — days reach only 7.9°C, 16° 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 | 7.9°C | -2.3°C | 140 mm | 7.7 | 10 h 00 | 5 | Good coverage |
| February | 10.7°C | -0.2°C | 139 mm | 8.1 | 10 h 51 | 10 | Good coverage |
| March | 15.8°C | 3.8°C | 150 mm | 9.3 | 11 h 52 | 31 | Good coverage |
| April | 21.6°C | 8.8°C | 137 mm | 7.9 | 13 h 02 | 62 | Good coverage |
| May | 26.4°C | 14.9°C | 168 mm | 9 | 14 h 01 | 68 | Good coverage |
| June | 30.7°C | 19.5°C | 138 mm | 7.8 | 14 h 32 | 51 | Good coverage |
| July | 32.2°C | 21.2°C | 139 mm | 8.1 | 14 h 20 | 43 | Good coverage |
| August | 32°C | 20.2°C | 110 mm | 7.2 | 13 h 29 | 50 | Good coverage |
| September | 28.4°C | 15.5°C | 158 mm | 5.8 | 12 h 21 | 65 | Good coverage |
| October | 22.2°C | 8.4°C | 112 mm | 6.3 | 11 h 14 | 68 | Good coverage |
| November | 15.8°C | 2.6°C | 113 mm | 7.1 | 10 h 15 | 36 | Good coverage |
| December | 9.7°C | -1.3°C | 151 mm | 8.2 | 9 h 46 | 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 | 25.0°C2 Jan 2022 | -27.2°C21 Jan 1985 | 180 mm22 Jan 1999 | 412 mm2005 · driest 9 mm in 1986 | 67 |
| February | 28.9°C13 Feb 1962 | -22.2°C5 Feb 2009 | 102 mm6 Feb 2004 | 311 mm2018 · driest 25 mm in 2002 | 67 |
| March | 30.6°C19 Mar 1982 | -15.0°C3 Mar 1980 | 137 mm13 Mar 1975 | 357 mm1975 · driest 44 mm in 1966 | 67 |
| April | 33.9°C23 Apr 1965 | -6.7°C8 Apr 2007 | 102 mm22 Apr 1984 | 300 mm1998 · driest 33 mm in 1986 | 64 |
| May | 37.2°C21 May 2004 | -0.6°C4 May 1976 | 145 mm2 May 2010 | 398 mm2003 · driest 29 mm in 2005 | 66 |
| June | 41.7°C30 Jun 2012 | 3.3°C1 Jun 1966 | 116 mm1 Jun 1997 | 358 mm2004 · driest 11 mm in 1988 | 66 |
| July | 40.6°C1 Jul 2012 | 8.3°C6 Jul 1972 | 150 mm14 Jul 1998 | 469 mm1998 · driest 24 mm in 1968 | 64 |
| August | 41.1°C16 Aug 2007 | 6.7°C29 Aug 1986 | 102 mm30 Aug 2005 | 323 mm2021 · driest 5 mm in 1953 | 66 |
| September | 40.6°C5 Sep 1954 | 0.6°C29 Sep 1967 | 178 mm3 Sep 1996 | 297 mm1977 · driest 0 mm in 2019 | 62 |
| October | 36.1°C4 Oct 2019 | -5.0°C27 Oct 1961 | 125 mm19 Oct 1972 | 283 mm2004 · driest 0 mm in 1963 | 63 |
| November | 29.4°C1 Nov 1984 | -12.8°C30 Nov 1976 | 121 mm27 Nov 1973 | 354 mm2004 · driest 18 mm in 1953 | 63 |
| December | 24.4°C12 Dec 2007 | -23.3°C22 Dec 1989 | 171 mm13 Dec 1956 | 471 mm2004 · driest 19 mm in 1958 | 66 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 20 | 4 | 1 |
| February | <1 | 0 | 15 | 4 | 1 |
| March | 2 | 0 | 9 | 4 | <1 |
| April | 9 | <1 | 2 | 5 | 0 |
| May | 21 | 7 | 0 | 5 | 0 |
| June | 27 | 18 | 0 | 4 | 0 |
| July | 29 | 24 | 0 | 4 | 0 |
| August | 28 | 22 | 0 | 3 | 0 |
| September | 23 | 11 | 0 | 3 | 0 |
| October | 10 | 2 | 3 | 3 | 0 |
| November | 2 | 0 | 11 | 4 | <1 |
| December | 0 | 0 | 19 | 4 | <1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 76); on 2011–2025 it is October (80). 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 | 3% | 28% | 13% | 33% | 5.1–12.3°C |
| February | 8% | 31% | 14% | 40% | 6.7–15.3°C |
| March | 23% | 32% | 15% | 39% | 12.9–19.7°C |
| April | 52% | 28% | 15% | 34% | 20.1–24.7°C |
| May | 65% | 30% | 15% | 35% | 24.4–28.6°C |
| June | 73% | 27% | 13% | 30% | 28.8–32.2°C |
| July | 71% | 29% | 12% | 33% | 30.9–34.0°C |
| August | 78% | 22% | 10% | 21% | 30.4–33.8°C |
| September | 77% | 21% | 11% | 21% | 25.9–30.9°C |
| October | 61% | 20% | 10% | 18% | 20.1–25.2°C |
| November | 23% | 26% | 13% | 31% | 13.7–18.5°C |
| December | 5% | 28% | 13% | 30% | 6.7–13.7°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