September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Rest: typically 27.7°C by day, 14.8°C at night, with 103 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
July · August · June
October · April · March
The weakest month is January, scoring 5 against September’s 75 — days reach only 6.2°C, 18° below the 24°C the score treats as ideal, and nights drop to -5.2°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 | 6.2°C | -5.2°C | 31 mm | 3.7 | 9 h 49 | 5 | Strong coverage |
| February | 9.2°C | -3.1°C | 38 mm | 4.7 | 10 h 44 | 17 | Strong coverage |
| March | 15.1°C | 2.1°C | 60 mm | 6.6 | 11 h 50 | 41 | Strong coverage |
| April | 20.3°C | 7.3°C | 109 mm | 7.8 | 13 h 07 | 59 | Strong coverage |
| May | 24.7°C | 13°C | 152 mm | 9.9 | 14 h 11 | 72 | Strong coverage |
| June | 29.8°C | 18.3°C | 140 mm | 8.3 | 14 h 45 | 56 | Strong coverage |
| July | 32.5°C | 20.6°C | 102 mm | 6.2 | 14 h 31 | 50 | Strong coverage |
| August | 32.2°C | 19.6°C | 97 mm | 6 | 13 h 37 | 53 | Strong coverage |
| September | 27.7°C | 14.8°C | 103 mm | 5.9 | 12 h 23 | 75 | Strong coverage |
| October | 21.2°C | 8.1°C | 86 mm | 6.4 | 11 h 09 | 68 | Strong coverage |
| November | 14.1°C | 1.7°C | 57 mm | 5 | 10 h 05 | 39 | Strong coverage |
| December | 8°C | -3.3°C | 43 mm | 4.3 | 9 h 34 | 12 | 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 | 23.9°C28 Jan 2013 | -30.6°C30 Jan 1949 | 52 mm30 Jan 1975 | 163 mm1949 · driest 0 mm in 1919 | 126 |
| February | 28.9°C27 Feb 2024 | -29.9°C16 Feb 2021 | 88 mm18 Feb 1911 | 210 mm1911 · driest 0 mm in 2006 | 125 |
| March | 35.0°C21 Mar 2026 | -20.0°C11 Mar 1948 | 104 mm13 Mar 1922 | 307 mm1973 · driest 0 mm in 1904 | 125 |
| April | 35.6°C14 Apr 1936 | -10.0°C3 Apr 1936 | 227 mm8 Apr 1927 | 413 mm1994 · driest 4 mm in 1900 | 123 |
| May | 37.2°C31 May 1934 | -2.2°C1 May 1909 | 200 mm26 May 1990 | 466 mm1990 · driest 42 mm in 1988 | 125 |
| June | 42.2°C20 Jun 1918 | 6.7°C3 Jun 1946 | 149 mm25 Jun 2021 | 461 mm2007 · driest 7 mm in 1933 | 124 |
| July | 46.7°C18 Jul 1936 | 8.9°C3 Jul 1924 | 177 mm29 Jul 2013 | 416 mm1992 · driest 0 mm in 1936 | 125 |
| August | 45.0°C9 Aug 1936 | 7.2°C29 Aug 1911 | 135 mm4 Aug 1911 | 291 mm2005 · driest 0 mm in 2000 | 122 |
| September | 41.7°C2 Sep 2000 | -1.1°C30 Sep 1984 | 154 mm12 Sep 1898 | 365 mm1900 · driest 1 mm in 1979 | 121 |
| October | 36.7°C7 Oct 1963 | -8.3°C31 Oct 1993 | 169 mm3 Oct 1986 | 305 mm1986 · driest 0 mm in 1952 | 120 |
| November | 31.7°C6 Nov 1915 | -17.2°C16 Nov 1932 | 103 mm20 Nov 1979 | 217 mm2024 · driest 0 mm in 1910 | 123 |
| December | 26.7°C24 Dec 2021 | -27.2°C23 Dec 1989 | 56 mm19 Dec 1933 | 153 mm1984 · driest 0 mm in 1938 | 122 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 |
| February | <1 | 0 | 21 | 1 |
| March | 2 | <1 | 12 | 2 |
| April | 7 | <1 | 3 | 4 |
| May | 16 | 4 | <1 | 5 |
| June | 28 | 16 | 0 | 4 |
| July | 30 | 25 | 0 | 3 |
| August | 30 | 23 | 0 | 3 |
| September | 22 | 11 | 0 | 3 |
| October | 9 | 2 | 2 | 3 |
| November | 1 | 0 | 13 | 2 |
| December | 0 | 0 | 23 | 1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 79); on 2011–2025 it is October (76). 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 | 2% | 13% | 3% | 8% | 1.9–10.1°C |
| February | 8% | 15% | 5% | 11% | 4.3–13.2°C |
| March | 24% | 20% | 7% | 20% | 10.6–18.6°C |
| April | 46% | 26% | 11% | 27% | 17.9–22.9°C |
| May | 62% | 30% | 14% | 38% | 22.7–27.1°C |
| June | 72% | 28% | 14% | 31% | 27.6–32.4°C |
| July | 80% | 20% | 10% | 18% | 30.7–35.7°C |
| August | 80% | 20% | 9% | 19% | 29.9–35.8°C |
| September | 76% | 21% | 11% | 19% | 25.3–31.0°C |
| October | 58% | 19% | 8% | 17% | 19.3–25.1°C |
| November | 20% | 15% | 6% | 11% | 10.6–17.6°C |
| December | 3% | 14% | 4% | 9% | 4.4–10.9°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