September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Sherwood Forest: typically 22.1°C by day, 14.4°C at night, with 155 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
October · April · May
The weakest month is January, scoring 5 against September’s 71 — days reach only 7.3°C, 17° 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 | 7.3°C | -2.3°C | 136 mm | 8.1 | 10 h 02 | 5 | Strong coverage |
| February | 9°C | -0.9°C | 134 mm | 8.2 | 10 h 51 | 5 | Strong coverage |
| March | 13.5°C | 2.4°C | 142 mm | 10 | 11 h 52 | 21 | Strong coverage |
| April | 18.4°C | 7°C | 146 mm | 9 | 13 h 01 | 46 | Strong coverage |
| May | 21.3°C | 11.7°C | 161 mm | 10.5 | 13 h 59 | 61 | Strong coverage |
| June | 24°C | 15.8°C | 182 mm | 12.4 | 14 h 30 | 69 | Strong coverage |
| July | 25.5°C | 17.8°C | 185 mm | 13.9 | 14 h 18 | 59 | Strong coverage |
| August | 24.7°C | 17.2°C | 173 mm | 12.8 | 13 h 29 | 66 | Strong coverage |
| September | 22.1°C | 14.4°C | 155 mm | 8.1 | 12 h 21 | 71 | Strong coverage |
| October | 17.4°C | 8.8°C | 140 mm | 6.7 | 11 h 14 | 49 | Strong coverage |
| November | 12.9°C | 3.4°C | 152 mm | 8 | 10 h 16 | 21 | Strong coverage |
| December | 8.7°C | -0.1°C | 168 mm | 8.7 | 9 h 48 | 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°C30 Jan 2002 | -28.3°C21 Jan 1985 | 131 mm10 Jan 2024 | 376 mm2024 · driest 7 mm in 2026 | 59 |
| February | 23.3°C10 Feb 2025 | -18.9°C4 Feb 1970 | 160 mm4 Feb 2022 | 301 mm2019 · driest 2 mm in 2007 | 57 |
| March | 27.2°C22 Mar 2017 | -15.6°C9 Mar 1996 | 151 mm26 Mar 2021 | 451 mm1975 · driest 28 mm in 1985 | 58 |
| April | 30.0°C28 Apr 1986 | -8.3°C8 Apr 2007 | 133 mm5 Apr 2012 | 290 mm1979 · driest 32 mm in 1986 | 57 |
| May | 35.0°C20 May 2000 | -0.6°C10 May 1977 | 112 mm28 May 1973 | 438 mm2018 · driest 38 mm in 2007 | 57 |
| June | 32.8°C30 Jun 2012 | 4.4°C7 Jun 1977 | 155 mm26 Jun 2006 | 427 mm2005 · driest 10 mm in 1990 | 57 |
| July | 36.1°C8 Jul 1977 | 10.0°C1 Jul 2007 | 115 mm27 Jul 2013 | 384 mm2012 · driest 0 mm in 2010 | 59 |
| August | 37.2°C21 Aug 1983 | 7.2°C29 Aug 1986 | 109 mm18 Aug 2021 | 371 mm1995 · driest 37 mm in 1980 | 57 |
| September | 32.2°C4 Sep 2000 | 1.1°C26 Sep 2001 | 214 mm8 Sep 2004 | 598 mm2004 · driest 1 mm in 1984 | 57 |
| October | 28.9°C4 Oct 2002 | -4.4°C21 Oct 1972 | 144 mm19 Oct 1968 | 379 mm2017 · driest 0 mm in 2000 | 57 |
| November | 26.1°C4 Nov 2003 | -13.9°C30 Nov 1976 | 146 mm26 Nov 1986 | 345 mm1979 · driest 27 mm in 2012 | 57 |
| December | 22.8°C4 Dec 2021 | -20.6°C25 Dec 1983 | 126 mm26 Dec 2023 | 406 mm1973 · driest 32 mm in 1980 | 59 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 19 | 4 | <1 |
| February | 0 | 0 | 16 | 4 | 1 |
| March | <1 | 0 | 11 | 4 | <1 |
| April | 3 | 0 | 3 | 4 | 0 |
| May | 5 | <1 | <1 | 5 | 0 |
| June | 12 | <1 | 0 | 5 | 0 |
| July | 18 | 2 | 0 | 5 | 0 |
| August | 14 | 1 | 0 | 5 | 0 |
| September | 6 | <1 | 0 | 4 | 0 |
| October | <1 | 0 | <1 | 3 | 0 |
| November | <1 | 0 | 8 | 4 | <1 |
| December | 0 | 0 | 15 | 5 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 27% | 14% | 32% | 3.7–10.2°C |
| February | 2% | 28% | 15% | 33% | 6.7–12.2°C |
| March | 15% | 31% | 16% | 40% | 10.8–16.8°C |
| April | 37% | 28% | 14% | 34% | 16.5–20.6°C |
| May | 50% | 34% | 17% | 43% | 19.7–23.1°C |
| June | 58% | 38% | 16% | 54% | 22.1–26.6°C |
| July | 58% | 42% | 18% | 57% | 24.0–28.2°C |
| August | 60% | 38% | 17% | 47% | 22.7–27.2°C |
| September | 57% | 29% | 15% | 30% | 20.5–24.5°C |
| October | 29% | 22% | 12% | 25% | 15.6–19.5°C |
| November | 6% | 26% | 15% | 29% | 10.6–15.7°C |
| December | <1% | 29% | 16% | 36% | 6.3–11.4°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