August
August · June · September
United States · 1991–2020
August leads for comfortable weather in Brighton: typically 26.4°C by day, 14.7°C at night, with 80 mm of rain. Based on measured 1991–2020 NOAA station history.
August · June · September
July · August · June
May · September · October
The weakest month is January, scoring 5 against August’s 82 — days reach only -0.8°C, 25° 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 | -0.8°C | -9.4°C | 57 mm | 8.3 | 9 h 23 | 5 | Strong coverage |
| February | 0.7°C | -9.3°C | 47 mm | 6.4 | 10 h 29 | 5 | Strong coverage |
| March | 6.8°C | -4.5°C | 55 mm | 6.7 | 11 h 48 | 5 | Strong coverage |
| April | 13.9°C | 1.7°C | 79 mm | 8.6 | 13 h 19 | 31 | Strong coverage |
| May | 20.5°C | 7.9°C | 92 mm | 9.1 | 14 h 35 | 62 | Strong coverage |
| June | 25.5°C | 13.1°C | 93 mm | 8.2 | 15 h 17 | 79 | Strong coverage |
| July | 27.6°C | 15.4°C | 90 mm | 7.4 | 15 h 00 | 76 | Strong coverage |
| August | 26.4°C | 14.7°C | 80 mm | 7.3 | 13 h 54 | 82 | Strong coverage |
| September | 22.7°C | 10.5°C | 78 mm | 7.5 | 12 h 26 | 78 | Strong coverage |
| October | 15.7°C | 4.5°C | 71 mm | 8.3 | 10 h 59 | 44 | Strong coverage |
| November | 8°C | -1.4°C | 61 mm | 7.4 | 9 h 42 | 10 | Strong coverage |
| December | 1.4°C | -6.5°C | 59 mm | 7.7 | 9 h 04 | 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 | 18.9°C25 Jan 1950 | -30.6°C19 Jan 1994 | 61 mm11 Jan 2020 | 132 mm2020 · driest 0 mm in 1986 | 90 |
| February | 19.4°C23 Feb 2000 | -32.8°C20 Feb 2015 | 69 mm16 Feb 1954 | 138 mm1938 · driest 0 mm in 1998 | 90 |
| March | 28.9°C22 Mar 1938 | -25.6°C3 Mar 2014 | 46 mm9 Mar 2011 | 122 mm2011 · driest 8 mm in 1986 | 93 |
| April | 30.0°C25 Apr 1990 | -11.7°C3 Apr 1954 | 81 mm8 Apr 2011 | 230 mm2011 · driest 3 mm in 1994 | 91 |
| May | 33.9°C29 May 2018 | -6.1°C3 May 2005 | 79 mm1 May 1998 | 211 mm1943 · driest 18 mm in 1967 | 89 |
| June | 38.9°C1 Jun 1934 | 0.6°C8 Jun 1949 | 149 mm25 Jun 1968 | 215 mm1968 · driest 6 mm in 1988 | 91 |
| July | 40.0°C24 Jul 1934 | 3.9°C3 Jul 2001 | 81 mm11 Jul 1957 | 208 mm1957 · driest 0 mm in 1998 | 92 |
| August | 37.2°C22 Aug 1936 | 3.3°C20 Aug 1977 | 111 mm26 Aug 1959 | 246 mm1959 · driest 0 mm in 1998 | 89 |
| September | 36.1°C8 Sep 1933 | -3.3°C28 Sep 1991 | 140 mm11 Sep 2010 | 318 mm1981 · driest 2 mm in 1995 | 89 |
| October | 31.1°C3 Oct 1953 | -8.9°C30 Oct 1966 | 105 mm3 Oct 1954 | 271 mm1954 · driest 5 mm in 2005 | 92 |
| November | 25.6°C1 Nov 2016 | -18.9°C13 Nov 2019 | 43 mm29 Nov 2009 | 120 mm2005 · driest 10 mm in 1986 | 92 |
| December | 17.8°C3 Dec 1982 | -27.8°C24 Dec 1983 | 47 mm27 Dec 1942 | 130 mm1949 · driest 0 mm in 1988 | 90 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 1 | 6 |
| February | 0 | 0 | 25 | 2 | 5 |
| March | <1 | 0 | 23 | 2 | 2 |
| April | 1 | 0 | 12 | 2 | <1 |
| May | 8 | 2 | 2 | 3 | 0 |
| June | 16 | 5 | 0 | 3 | 0 |
| July | 23 | 8 | 0 | 3 | 0 |
| August | 20 | 4 | 0 | 3 | 0 |
| September | 10 | 2 | <1 | 2 | 0 |
| October | 2 | 0 | 6 | 2 | 0 |
| November | <1 | 0 | 19 | 2 | 1 |
| December | 0 | 0 | 26 | 2 | 5 |
The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 87); on 2011–2025 it is September (85). 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 | 0% | 26% | 4% | 30% | -4.7–2.2°C |
| February | 0% | 26% | 5% | 28% | -3.5–2.8°C |
| March | 3% | 27% | 6% | 33% | 2.5–9.0°C |
| April | 12% | 31% | 9% | 38% | 10.4–15.7°C |
| May | 39% | 30% | 9% | 36% | 17.2–22.9°C |
| June | 65% | 27% | 10% | 30% | 23.0–27.2°C |
| July | 77% | 22% | 8% | 20% | 25.6–29.8°C |
| August | 74% | 24% | 8% | 22% | 24.8–28.3°C |
| September | 52% | 26% | 8% | 28% | 20.4–24.5°C |
| October | 20% | 25% | 6% | 28% | 13.1–18.2°C |
| November | 2% | 28% | 7% | 34% | 4.5–10.4°C |
| December | 0% | 28% | 6% | 34% | -2.2–3.4°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