October
October · May · September
United States · 1991–2020
October leads for comfortable weather in Union: typically 23.5°C by day, 8.6°C at night, with 82 mm of rain. Based on measured 1991–2020 NOAA station history.
October · May · September
July · September · August
October · April · November
The weakest month is January, scoring 17 against October’s 78 — days reach only 12°C, 12° below the 24°C the score treats as ideal, and nights drop to -1.8°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 | 12°C | -1.8°C | 99 mm | 7.9 | 10 h 04 | 17 | Strong coverage |
| February | 14.3°C | -0.5°C | 82 mm | 7.1 | 10 h 53 | 30 | Strong coverage |
| March | 18.3°C | 2.5°C | 109 mm | 7.7 | 11 h 52 | 44 | Strong coverage |
| April | 23.4°C | 7.4°C | 89 mm | 7 | 13 h 00 | 73 | Strong coverage |
| May | 27.1°C | 12.6°C | 88 mm | 6.6 | 13 h 57 | 75 | Strong coverage |
| June | 30.8°C | 17.8°C | 101 mm | 7.5 | 14 h 28 | 59 | Strong coverage |
| July | 32.6°C | 19.9°C | 81 mm | 7.1 | 14 h 16 | 53 | Strong coverage |
| August | 31.7°C | 19.3°C | 95 mm | 7 | 13 h 27 | 55 | Strong coverage |
| September | 28.6°C | 15.8°C | 84 mm | 5.8 | 12 h 21 | 74 | Strong coverage |
| October | 23.5°C | 8.6°C | 82 mm | 5 | 11 h 15 | 78 | Strong coverage |
| November | 17.7°C | 2.5°C | 83 mm | 5.9 | 10 h 18 | 47 | Strong coverage |
| December | 13.4°C | -0.5°C | 101 mm | 8 | 9 h 50 | 23 | 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 | 27.8°C30 Jan 2002 | -18.3°C21 Jan 1985 | 102 mm15 Jan 1995 | 221 mm1995 · driest 9 mm in 1981 | 77 |
| February | 28.3°C29 Feb 1972 | -16.1°C1 Feb 1966 | 62 mm11 Feb 1981 | 204 mm1961 · driest 1 mm in 2008 | 77 |
| March | 32.2°C24 Mar 1995 | -12.8°C6 Mar 1960 | 80 mm3 Mar 1971 | 294 mm1980 · driest 25 mm in 1985 | 76 |
| April | 35.0°C24 Apr 1980 | -6.7°C8 Apr 2007 | 85 mm21 Apr 1992 | 244 mm1998 · driest 0 mm in 2012 | 77 |
| May | 36.7°C28 May 1962 | -1.7°C9 May 1989 | 125 mm29 May 2010 | 270 mm1976 · driest 6 mm in 2000 | 75 |
| June | 41.1°C28 Jun 1954 | 4.4°C1 Jun 1972 | 96 mm22 Jun 1995 | 247 mm1995 · driest 6 mm in 2024 | 76 |
| July | 42.2°C29 Jul 1952 | 10.0°C7 Jul 1951 | 141 mm24 Jul 1997 | 287 mm2013 · driest 6 mm in 1993 | 74 |
| August | 41.7°C18 Aug 1954 | 7.8°C7 Aug 1957 | 168 mm12 Aug 1991 | 310 mm1986 · driest 9 mm in 2007 | 75 |
| September | 38.9°C7 Sep 1954 | 1.7°C30 Sep 1967 | 163 mm27 Sep 2024 | 236 mm2004 · driest 0 mm in 2005 | 77 |
| October | 37.8°C6 Oct 1954 | -7.8°C30 Oct 1965 | 186 mm12 Oct 1990 | 361 mm1990 · driest 0 mm in 2000 | 77 |
| November | 30.6°C3 Nov 1961 | -12.2°C20 Nov 1951 | 128 mm21 Nov 1985 | 367 mm1985 · driest 3 mm in 2007 | 77 |
| December | 26.7°C12 Dec 2007 | -17.8°C13 Dec 1962 | 109 mm23 Dec 2013 | 274 mm2015 · driest 8 mm in 1955 | 75 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | <1 | 0 | 19 | 3 |
| February | <1 | 0 | 16 | 3 |
| March | 4 | <1 | 11 | 3 |
| April | 13 | 3 | 3 | 3 |
| May | 22 | 8 | 0 | 3 |
| June | 27 | 18 | 0 | 3 |
| July | 29 | 25 | 0 | 2 |
| August | 28 | 22 | 0 | 3 |
| September | 24 | 12 | 0 | 2 |
| October | 12 | 1 | 2 | 2 |
| November | 2 | 0 | 12 | 3 |
| December | <1 | 0 | 19 | 3 |
The best month has moved. On the 1961–1990 numbers the strongest month here was April (scoring 76); on 2011–2025 it is October (84). 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 | 8% | 27% | 12% | 31% | 9.1–14.5°C |
| February | 14% | 28% | 12% | 32% | 11.2–16.5°C |
| March | 33% | 27% | 12% | 30% | 15.7–21.2°C |
| April | 63% | 23% | 10% | 22% | 21.5–25.6°C |
| May | 74% | 24% | 10% | 24% | 25.2–29.1°C |
| June | 75% | 25% | 11% | 27% | 28.8–33.0°C |
| July | 73% | 27% | 10% | 31% | 30.7–34.8°C |
| August | 77% | 23% | 9% | 23% | 29.9–33.9°C |
| September | 79% | 20% | 8% | 19% | 26.9–30.9°C |
| October | 69% | 17% | 8% | 14% | 21.5–25.7°C |
| November | 33% | 21% | 9% | 19% | 15.5–20.4°C |
| December | 9% | 26% | 10% | 30% | 10.5–16.1°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