September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Wilson Ranch: typically 25.3°C by day, 10.8°C at night, with 68 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
October · May · September
The weakest month is January, scoring 5 against September’s 81 — days reach only 1.3°C, 23° below the 24°C the score treats as ideal, and nights drop to -10.6°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 | 1.3°C | -10.6°C | 10 mm | 2.3 | 9 h 22 | 5 | Strong coverage |
| February | 3.2°C | -8.9°C | 18 mm | 3.2 | 10 h 28 | 5 | Strong coverage |
| March | 9.4°C | -3.9°C | 31 mm | 4.5 | 11 h 48 | 16 | Strong coverage |
| April | 15.5°C | 1.9°C | 74 mm | 7.2 | 13 h 19 | 39 | Strong coverage |
| May | 21.6°C | 8.4°C | 104 mm | 9.2 | 14 h 36 | 65 | Strong coverage |
| June | 27.3°C | 14.3°C | 110 mm | 9.4 | 15 h 18 | 71 | Strong coverage |
| July | 30.8°C | 17°C | 73 mm | 7.1 | 15 h 01 | 65 | Strong coverage |
| August | 29.7°C | 15.9°C | 78 mm | 6.7 | 13 h 55 | 70 | Strong coverage |
| September | 25.3°C | 10.8°C | 68 mm | 5.7 | 12 h 26 | 81 | Strong coverage |
| October | 17.1°C | 3.2°C | 53 mm | 5.3 | 10 h 58 | 52 | Strong coverage |
| November | 8.9°C | -3.7°C | 19 mm | 3.1 | 9 h 41 | 17 | Strong coverage |
| December | 2.3°C | -8.7°C | 15 mm | 2.7 | 9 h 03 | 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 | 22.2°C26 Jan 2002 | -37.2°C11 Jan 1982 | 39 mm3 Jan 2023 | 74 mm2023 · driest 0 mm in 1924 | 111 |
| February | 25.0°C21 Feb 1995 | -36.1°C16 Feb 1936 | 31 mm1 Feb 1915 | 67 mm1953 · driest 0 mm in 1982 | 112 |
| March | 33.3°C30 Mar 1943 | -27.8°C1 Mar 1980 | 81 mm30 Mar 1949 | 168 mm1987 · driest 0 mm in 2015 | 112 |
| April | 36.7°C28 Apr 1910 | -21.1°C4 Apr 1936 | 76 mm30 Apr 2022 | 176 mm1927 · driest 0 mm in 1945 | 112 |
| May | 36.7°C7 May 1916 | -7.8°C2 May 1911 | 79 mm26 May 1917 | 204 mm1982 · driest 1 mm in 2006 | 112 |
| June | 41.7°C21 Jun 1988 | 1.7°C5 Jun 1907 | 93 mm9 Jun 2014 | 239 mm2010 · driest 4 mm in 1909 | 114 |
| July | 44.4°C24 Jul 1940 | 5.0°C30 Jul 1971 | 91 mm12 Jul 1908 | 192 mm1972 · driest 1 mm in 2002 | 116 |
| August | 42.8°C4 Aug 1934 | 1.1°C28 Aug 1911 | 127 mm23 Aug 1990 | 201 mm2019 · driest 1 mm in 2000 | 115 |
| September | 41.1°C9 Sep 1931 | -10.0°C25 Sep 1926 | 114 mm17 Sep 1986 | 234 mm1986 · driest 0 mm in 1908 | 117 |
| October | 37.2°C5 Oct 1947 | -18.3°C28 Oct 1925 | 84 mm13 Oct 2023 | 165 mm1911 · driest 0 mm in 1917 | 117 |
| November | 28.3°C2 Nov 2005 | -27.8°C14 Nov 1940 | 43 mm28 Nov 1960 | 83 mm1983 · driest 0 mm in 1962 | 111 |
| December | 25.6°C23 Dec 2025 | -33.9°C22 Dec 1989 | 41 mm3 Dec 1953 | 79 mm2018 · driest 0 mm in 1986 | 109 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | 3 |
| February | 0 | 0 | 26 | <1 | 4 |
| March | <1 | 0 | 23 | 1 | 3 |
| April | 3 | <1 | 11 | 3 | 2 |
| May | 10 | 3 | 1 | 3 | 0 |
| June | 21 | 10 | 0 | 3 | 0 |
| July | 28 | 18 | 0 | 2 | 0 |
| August | 27 | 15 | 0 | 3 | 0 |
| September | 17 | 7 | <1 | 2 | 0 |
| October | 5 | 1 | 8 | 2 | <1 |
| November | <1 | 0 | 22 | <1 | 2 |
| December | 0 | 0 | 29 | <1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 9% | <1% | 3% | -4.6–5.4°C |
| February | 2% | 12% | 1% | 9% | -1.6–8.1°C |
| March | 10% | 15% | 4% | 12% | 3.4–13.2°C |
| April | 29% | 21% | 7% | 23% | 12.6–18.7°C |
| May | 50% | 28% | 10% | 33% | 18.9–24.4°C |
| June | 69% | 28% | 10% | 30% | 24.8–29.6°C |
| July | 78% | 22% | 8% | 19% | 28.4–33.2°C |
| August | 78% | 21% | 7% | 18% | 27.5–32.3°C |
| September | 70% | 19% | 6% | 16% | 22.5–27.9°C |
| October | 42% | 13% | 4% | 10% | 14.9–21.5°C |
| November | 9% | 10% | 2% | 6% | 5.5–12.5°C |
| December | <1% | 9% | 1% | 4% | -2.6–6.2°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