September
September · June · May
United States · 1991–2020
September leads for comfortable weather in White City: typically 26.4°C by day, 13.9°C at night, with 40 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · May
August · July · June
May · October · September
The weakest month is January, scoring 5 against September’s 88 — days reach only 3.8°C, 20° 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 | 3.8°C | -4.9°C | 56 mm | 7.3 | 9 h 34 | 5 | Strong coverage |
| February | 7.2°C | -2.5°C | 57 mm | 6.3 | 10 h 35 | 7 | Strong coverage |
| March | 12.6°C | 1.6°C | 68 mm | 7.2 | 11 h 49 | 30 | Strong coverage |
| April | 16.4°C | 4.6°C | 92 mm | 9.2 | 13 h 14 | 43 | Strong coverage |
| May | 21.9°C | 9.3°C | 70 mm | 7.4 | 14 h 25 | 74 | Strong coverage |
| June | 28.2°C | 14.6°C | 35 mm | 4.2 | 15 h 03 | 84 | Strong coverage |
| July | 33°C | 19.9°C | 16 mm | 2.2 | 14 h 48 | 61 | Strong coverage |
| August | 31.9°C | 19.1°C | 22 mm | 3.3 | 13 h 47 | 66 | Strong coverage |
| September | 26.4°C | 13.9°C | 40 mm | 4.7 | 12 h 25 | 88 | Strong coverage |
| October | 18.3°C | 6.6°C | 53 mm | 6.1 | 11 h 03 | 61 | Strong coverage |
| November | 9.9°C | 0°C | 51 mm | 6.5 | 9 h 52 | 21 | Strong coverage |
| December | 3.9°C | -4.7°C | 57 mm | 7.2 | 9 h 17 | 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 | 18.3°C12 Jan 1953 | -26.1°C12 Jan 1963 | 81 mm14 Jan 1953 | 144 mm1953 · driest 0 mm in 1961 | 85 |
| February | 22.2°C19 Feb 1958 | -22.2°C6 Feb 1989 | 48 mm25 Feb 1998 | 162 mm1998 · driest 9 mm in 2015 | 84 |
| March | 28.9°C25 Mar 2026 | -14.4°C4 Mar 1966 | 55 mm9 Mar 1986 | 144 mm2019 · driest 11 mm in 1956 | 83 |
| April | 31.7°C27 Apr 1987 | -9.4°C7 Apr 2010 | 47 mm23 Apr 1957 | 174 mm1944 · driest 8 mm in 2020 | 82 |
| May | 36.1°C19 May 1958 | -7.2°C29 May 2011 | 66 mm23 May 1968 | 177 mm1993 · driest 2 mm in 1963 | 83 |
| June | 39.4°C21 Jun 1961 | 0.6°C13 Jun 2001 | 54 mm25 Jun 1985 | 123 mm1998 · driest 0 mm in 2013 | 85 |
| July | 42.2°C11 Jul 1958 | 6.7°C1 Jul 1963 | 41 mm25 Jul 1998 | 83 mm1984 · driest 0 mm in 2005 | 82 |
| August | 40.0°C1 Aug 2000 | 3.9°C30 Aug 2024 | 42 mm26 Aug 1965 | 99 mm1965 · driest 0 mm in 1974 | 84 |
| September | 37.8°C3 Sep 1950 | -1.1°C25 Sep 1970 | 118 mm26 Sep 1982 | 298 mm1982 · driest 0 mm in 1979 | 83 |
| October | 32.2°C3 Oct 1963 | -12.8°C30 Oct 2019 | 59 mm27 Oct 1991 | 166 mm1981 · driest 0 mm in 1952 | 84 |
| November | 25.0°C6 Nov 1999 | -22.8°C16 Nov 1955 | 45 mm16 Nov 1958 | 118 mm1983 · driest 0 mm in 1976 | 83 |
| December | 20.6°C9 Dec 1981 | -24.4°C23 Dec 1990 | 50 mm26 Dec 2003 | 147 mm1964 · driest 1 mm in 1976 | 83 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 26 | 2 | 4 |
| February | 0 | 0 | 20 | 2 | 4 |
| March | 0 | 0 | 12 | 3 | 2 |
| April | 2 | 0 | 6 | 3 | 1 |
| May | 11 | 2 | <1 | 3 | <1 |
| June | 23 | 13 | 0 | 1 | 0 |
| July | 30 | 27 | 0 | <1 | 0 |
| August | 30 | 25 | 0 | <1 | 0 |
| September | 20 | 8 | 0 | 1 | 0 |
| October | 4 | <1 | 3 | 2 | <1 |
| November | 0 | 0 | 16 | 2 | 3 |
| December | 0 | 0 | 26 | 2 | 5 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 24% | 4% | 23% | 1.1–7.0°C |
| February | <1% | 25% | 6% | 27% | 4.6–10.1°C |
| March | 8% | 26% | 8% | 29% | 9.5–14.5°C |
| April | 31% | 28% | 9% | 31% | 14.1–19.5°C |
| May | 62% | 23% | 8% | 25% | 19.6–24.6°C |
| June | 83% | 14% | 4% | 10% | 25.5–31.1°C |
| July | 91% | 10% | 2% | 6% | 31.7–35.1°C |
| August | 87% | 14% | 3% | 10% | 30.6–33.7°C |
| September | 81% | 15% | 4% | 12% | 24.2–29.2°C |
| October | 46% | 19% | 7% | 18% | 15.5–22.2°C |
| November | 5% | 21% | 6% | 22% | 7.5–13.2°C |
| December | <1% | 23% | 6% | 23% | 2.1–7.4°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