September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Glenmoor: typically 25°C by day, 13.7°C at night, with 92 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
August · July · June
October · May · September
The weakest month is January, scoring 5 against September’s 83 — days reach only 2.4°C, 22° 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 | 2.4°C | -6°C | 79 mm | 10.5 | 9 h 33 | 5 | Good coverage |
| February | 4°C | -5.7°C | 70 mm | 9.2 | 10 h 35 | 5 | Good coverage |
| March | 9.5°C | -1.4°C | 91 mm | 10.2 | 11 h 49 | 8 | Good coverage |
| April | 17°C | 4.3°C | 103 mm | 11.2 | 13 h 14 | 41 | Good coverage |
| May | 22.2°C | 10°C | 109 mm | 11.6 | 14 h 25 | 67 | Good coverage |
| June | 26.4°C | 14.8°C | 117 mm | 10.2 | 15 h 04 | 74 | Good coverage |
| July | 28.7°C | 17.6°C | 111 mm | 9 | 14 h 49 | 64 | Good coverage |
| August | 28.2°C | 17.2°C | 92 mm | 8.1 | 13 h 47 | 70 | Good coverage |
| September | 25°C | 13.7°C | 92 mm | 7.2 | 12 h 25 | 83 | Good coverage |
| October | 17.8°C | 7.4°C | 83 mm | 9.3 | 11 h 03 | 54 | Good coverage |
| November | 11.3°C | 1.4°C | 75 mm | 9 | 9 h 51 | 23 | Good coverage |
| December | 5.1°C | -2.6°C | 88 mm | 10.1 | 9 h 16 | 5 | Good 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 | 24.4°C25 Jan 1950 | -28.9°C13 Jan 1912 | 61 mm26 Jan 1952 | 224 mm1937 · driest 0 mm in 2002 | 113 |
| February | 24.4°C12 Feb 1932 | -30.6°C10 Feb 1899 | 55 mm16 Feb 2018 | 198 mm2018 · driest 0 mm in 2002 | 114 |
| March | 31.1°C22 Mar 1938 | -26.1°C1 Mar 1934 | 53 mm26 Mar 1913 | 184 mm2020 · driest 0 mm in 1910 | 117 |
| April | 33.9°C25 Apr 1925 | -15.0°C1 Apr 1923 | 71 mm20 Apr 1901 | 211 mm1901 · driest 6 mm in 1971 | 115 |
| May | 36.1°C31 May 1953 | -5.6°C2 May 1945 | 71 mm6 May 1971 | 209 mm2003 · driest 22 mm in 1911 | 114 |
| June | 37.8°C26 Jun 1952 | 0.6°C8 Jun 1912 | 137 mm18 Jun 1956 | 339 mm2019 · driest 16 mm in 1967 | 113 |
| July | 40.0°C8 Jul 2012 | 2.2°C30 Jul 1936 | 95 mm7 Jul 1943 | 216 mm1943 · driest 4 mm in 1894 | 115 |
| August | 42.8°C6 Aug 1918 | 2.2°C31 Aug 1915 | 115 mm16 Aug 1952 | 215 mm1980 · driest 5 mm in 1951 | 115 |
| September | 39.4°C3 Sep 1953 | -1.1°C22 Sep 1904 | 103 mm2 Sep 1914 | 269 mm1926 · driest 0 mm in 1893 | 117 |
| October | 35.0°C3 Oct 1898 | -6.7°C21 Oct 1901 | 80 mm15 Oct 1954 | 184 mm1954 · driest 2 mm in 1963 | 116 |
| November | 29.4°C3 Nov 1961 | -17.2°C30 Nov 1958 | 67 mm4 Nov 1985 | 302 mm1985 · driest 5 mm in 1917 | 115 |
| December | 25.0°C3 Dec 1982 | -26.1°C30 Dec 1917 | 59 mm1 Dec 2010 | 173 mm1923 · driest 4 mm in 1955 | 113 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 25 | 3 | 5 |
| February | 0 | 0 | 23 | 2 | 3 |
| March | <1 | 0 | 20 | 3 | 1 |
| April | 4 | <1 | 6 | 4 | <1 |
| May | 11 | 2 | <1 | 4 | 0 |
| June | 20 | 6 | 0 | 4 | 0 |
| July | 27 | 12 | 0 | 4 | 0 |
| August | 27 | 10 | 0 | 3 | 0 |
| September | 15 | 4 | 0 | 3 | 0 |
| October | 4 | <1 | <1 | 3 | 0 |
| November | <1 | 0 | 12 | 2 | <1 |
| December | 0 | 0 | 22 | 3 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 32% | 8% | 37% | -0.4–7.6°C |
| February | <1% | 30% | 7% | 37% | 1.0–8.2°C |
| March | 8% | 33% | 10% | 43% | 6.6–14.2°C |
| April | 27% | 35% | 10% | 47% | 14.4–20.3°C |
| May | 51% | 34% | 11% | 45% | 20.2–26.1°C |
| June | 66% | 33% | 12% | 40% | 25.3–29.9°C |
| July | 72% | 28% | 12% | 31% | 27.8–31.8°C |
| August | 73% | 26% | 10% | 27% | 26.7–30.8°C |
| September | 70% | 23% | 8% | 24% | 23.5–27.9°C |
| October | 38% | 26% | 8% | 30% | 16.7–21.7°C |
| November | 7% | 29% | 8% | 32% | 8.9–13.8°C |
| December | <1% | 30% | 8% | 35% | 1.8–8.4°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