September
September · August · June
United States · 1991–2020
September leads for comfortable weather in Leith-Hatfield: typically 25.2°C by day, 11.3°C at night, with 87 mm of rain. Based on measured 1991–2020 NOAA station history.
September · August · June
August · July · June
October · May · September
The weakest month is January, scoring 5 against September’s 77 — days reach only 4.1°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 | 4.1°C | -6.3°C | 82 mm | 12.3 | 9 h 38 | 5 | Strong coverage |
| February | 5.8°C | -5.6°C | 69 mm | 10 | 10 h 37 | 5 | Strong coverage |
| March | 10.6°C | -2.2°C | 96 mm | 11.2 | 11 h 49 | 9 | Strong coverage |
| April | 17.8°C | 3.2°C | 92 mm | 12 | 13 h 12 | 42 | Strong coverage |
| May | 23°C | 8.8°C | 110 mm | 11.7 | 14 h 21 | 67 | Strong coverage |
| June | 27.1°C | 13.9°C | 119 mm | 11.4 | 14 h 59 | 68 | Strong coverage |
| July | 28.9°C | 16.2°C | 118 mm | 10.2 | 14 h 44 | 64 | Strong coverage |
| August | 28.4°C | 15.3°C | 93 mm | 8.5 | 13 h 44 | 72 | Strong coverage |
| September | 25.2°C | 11.3°C | 87 mm | 8.6 | 12 h 24 | 77 | Strong coverage |
| October | 18.6°C | 4.9°C | 80 mm | 8.7 | 11 h 05 | 53 | Strong coverage |
| November | 12.1°C | -0.3°C | 81 mm | 9.8 | 9 h 55 | 21 | Strong coverage |
| December | 6.6°C | -3.5°C | 84 mm | 10.9 | 9 h 21 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 26.7°C30 Jan 1914 | -30.0°C22 Jan 1994 | 46 mm13 Jan 1911 | 213 mm1937 · driest 21 mm in 1967 | 122 |
| February | 26.1°C21 Feb 2018 | -30.0°C10 Feb 1899 | 49 mm22 Feb 1897 | 182 mm2018 · driest 14 mm in 1968 | 124 |
| March | 31.1°C25 Mar 1929 | -22.2°C7 Mar 2015 | 82 mm13 Mar 1972 | 218 mm1967 · driest 10 mm in 1910 | 124 |
| April | 33.9°C29 Apr 1914 | -13.3°C1 Apr 1923 | 62 mm8 Apr 1902 | 217 mm1901 · driest 23 mm in 1932 | 122 |
| May | 35.6°C27 May 1914 | -5.0°C11 May 1913 | 67 mm27 May 1987 | 205 mm1943 · driest 19 mm in 1939 | 123 |
| June | 38.3°C11 Jun 1914 | 0.6°C11 Jun 1972 | 110 mm23 Jun 1972 | 279 mm1939 · driest 26 mm in 1965 | 122 |
| July | 38.9°C21 Jul 1934 | 2.8°C1 Jul 1988 | 97 mm22 Jul 1980 | 396 mm1896 · driest 36 mm in 1942 | 122 |
| August | 38.9°C4 Aug 1930 | 1.1°C29 Aug 1982 | 86 mm5 Aug 1956 | 251 mm1935 · driest 16 mm in 1951 | 122 |
| September | 37.2°C1 Sep 1932 | -1.7°C25 Sep 1983 | 79 mm21 Sep 1950 | 224 mm1945 · driest 9 mm in 1928 | 121 |
| October | 35.0°C2 Oct 1927 | -8.9°C20 Oct 1992 | 117 mm15 Oct 1954 | 210 mm1925 · driest 0 mm in 1914 | 123 |
| November | 29.4°C5 Nov 1948 | -18.3°C30 Nov 1929 | 82 mm27 Nov 1985 | 321 mm1985 · driest 6 mm in 1904 | 122 |
| December | 25.0°C6 Dec 1982 | -25.6°C22 Dec 1989 | 67 mm14 Dec 1901 | 180 mm1901 · driest 11 mm in 1955 | 123 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 25 | 3 | 5 |
| February | <1 | 0 | 24 | 2 | 4 |
| March | <1 | 0 | 21 | 3 | 2 |
| April | 5 | <1 | 10 | 3 | <1 |
| May | 12 | 3 | 1 | 4 | 0 |
| June | 22 | 8 | 0 | 4 | 0 |
| July | 28 | 12 | 0 | 4 | 0 |
| August | 27 | 11 | 0 | 3 | 0 |
| September | 17 | 5 | <1 | 3 | 0 |
| October | 6 | <1 | 6 | 3 | <1 |
| November | <1 | 0 | 17 | 3 | <1 |
| December | 0 | 0 | 24 | 3 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 39% | 9% | 52% | 0.9–8.2°C |
| February | 2% | 37% | 8% | 51% | 1.4–9.1°C |
| March | 9% | 37% | 11% | 53% | 7.2–15.1°C |
| April | 26% | 40% | 11% | 54% | 14.5–20.3°C |
| May | 49% | 37% | 12% | 51% | 20.7–25.9°C |
| June | 62% | 36% | 13% | 47% | 25.2–28.9°C |
| July | 67% | 33% | 13% | 40% | 27.5–30.6°C |
| August | 71% | 29% | 11% | 33% | 26.3–29.9°C |
| September | 65% | 27% | 10% | 31% | 22.9–27.5°C |
| October | 36% | 27% | 8% | 32% | 16.1–21.3°C |
| November | 9% | 33% | 9% | 40% | 9.3–14.8°C |
| December | 1% | 35% | 9% | 46% | 2.5–9.6°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