September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Allard: typically 24.9°C by day, 8.4°C at night, with 36 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
August · July · June
September · May · October
The weakest month is January, scoring 5 against September’s 83 — days reach only -1.4°C, 25° below the 24°C the score treats as ideal, and nights drop to -13.4°C.
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 | -1.4°C | -13.4°C | 9 mm | 3.4 | 8 h 53 | 5 | Strong coverage |
| February | 1.3°C | -11.6°C | 10 mm | 2.9 | 10 h 12 | 5 | Strong coverage |
| March | 8.2°C | -5.6°C | 14 mm | 3.7 | 11 h 45 | 10 | Strong coverage |
| April | 15.3°C | 0.9°C | 36 mm | 5.3 | 13 h 31 | 44 | Strong coverage |
| May | 21°C | 6.7°C | 70 mm | 8.2 | 15 h 02 | 66 | Strong coverage |
| June | 26°C | 12°C | 62 mm | 8.8 | 15 h 52 | 79 | Strong coverage |
| July | 31.2°C | 15.3°C | 57 mm | 6.7 | 15 h 32 | 69 | Strong coverage |
| August | 30.9°C | 13.9°C | 38 mm | 4.7 | 14 h 13 | 73 | Strong coverage |
| September | 24.9°C | 8.4°C | 36 mm | 4.6 | 12 h 30 | 83 | Strong coverage |
| October | 15.8°C | 1.8°C | 28 mm | 4.8 | 10 h 47 | 48 | Strong coverage |
| November | 6.6°C | -5.3°C | 12 mm | 3 | 9 h 17 | 6 | Strong coverage |
| December | 0.2°C | -11.1°C | 10 mm | 3 | 8 h 31 | 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 | 17.8°C8 Jan 2002 | -44.4°C12 Jan 1916 | 18 mm21 Jan 1897 | 43 mm1896 · driest 0 mm in 1901 | 131 |
| February | 22.8°C27 Feb 1932 | -45.6°C16 Feb 1936 | 20 mm27 Feb 1902 | 41 mm1902 · driest 0 mm in 1921 | 132 |
| March | 29.4°C22 Mar 1910 | -34.4°C1 Mar 1922 | 33 mm20 Mar 1894 | 74 mm1902 · driest 0 mm in 1930 | 131 |
| April | 34.4°C26 Apr 1897 | -21.1°C1 Apr 1899 | 51 mm21 Apr 1940 | 92 mm1992 · driest 0 mm in 1949 | 130 |
| May | 40.0°C29 May 1934 | -8.9°C1 May 1909 | 77 mm10 May 2011 | 179 mm1896 · driest 0 mm in 1901 | 131 |
| June | 43.3°C8 Jun 1988 | -1.7°C1 Jun 1917 | 70 mm17 Jun 2010 | 178 mm1925 · driest 15 mm in 2007 | 130 |
| July | 47.2°C20 Jul 1893 | 2.8°C6 Jul 1934 | 90 mm16 Jul 1916 | 161 mm1993 · driest 0 mm in 1894 | 132 |
| August | 45.0°C6 Aug 1893 | 0.0°C27 Aug 1911 | 145 mm5 Aug 1916 | 194 mm2014 · driest 1 mm in 1967 | 128 |
| September | 41.1°C1 Sep 1983 | -10.0°C29 Sep 1907 | 86 mm10 Sep 1916 | 215 mm2019 · driest 0 mm in 1907 | 128 |
| October | 35.0°C1 Oct 1946 | -25.0°C26 Oct 1919 | 50 mm2 Oct 1971 | 116 mm1971 · driest 0 mm in 1903 | 130 |
| November | 26.7°C1 Nov 1987 | -32.8°C29 Nov 1985 | 38 mm2 Nov 2000 | 57 mm2000 · driest 0 mm in 1903 | 129 |
| December | 22.2°C5 Dec 1939 | -41.1°C22 Dec 1989 | 19 mm25 Dec 1916 | 52 mm1917 · driest 0 mm in 1893 | 130 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | 0 | 4 |
| February | 0 | 0 | 27 | <1 | 4 |
| March | <1 | 0 | 25 | <1 | 3 |
| April | 3 | <1 | 13 | 1 | <1 |
| May | 9 | 2 | 2 | 2 | <1 |
| June | 18 | 7 | 0 | 2 | 0 |
| July | 28 | 19 | 0 | 2 | 0 |
| August | 27 | 18 | 0 | 1 | 0 |
| September | 16 | 8 | 1 | 1 | 0 |
| October | 3 | <1 | 11 | <1 | <1 |
| November | <1 | 0 | 25 | <1 | 2 |
| December | 0 | 0 | 30 | <1 | 4 |
The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 86); on 2011–2025 it is June (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% | 11% | <1% | 5% | -8.9–2.4°C |
| February | <1% | 10% | <1% | 5% | -6.5–6.4°C |
| March | 4% | 12% | 1% | 6% | 1.2–11.6°C |
| April | 27% | 16% | 3% | 13% | 11.8–19.5°C |
| May | 53% | 22% | 6% | 26% | 18.4–25.0°C |
| June | 67% | 29% | 8% | 32% | 23.9–29.9°C |
| July | 81% | 19% | 5% | 16% | 28.8–34.5°C |
| August | 84% | 15% | 3% | 11% | 27.9–33.3°C |
| September | 69% | 14% | 3% | 12% | 20.9–27.8°C |
| October | 35% | 11% | 2% | 6% | 12.8–19.8°C |
| November | 2% | 9% | <1% | 4% | 2.3–10.9°C |
| December | <1% | 10% | <1% | 4% | -5.5–4.3°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