September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Atkins: typically 27.7°C by day, 15.5°C at night, with 92 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
August · July · June
October · April · November
The weakest month is January, scoring 5 against September’s 76 — days reach only 7.8°C, 16° 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 | 7.8°C | -2.5°C | 100 mm | 7.9 | 9 h 55 | 5 | Strong coverage |
| February | 10.5°C | -0.9°C | 124 mm | 7.8 | 10 h 48 | 10 | Strong coverage |
| March | 15.8°C | 3.4°C | 134 mm | 9.6 | 11 h 51 | 32 | Strong coverage |
| April | 21.4°C | 8.3°C | 157 mm | 9.4 | 13 h 04 | 57 | Strong coverage |
| May | 25.3°C | 13.9°C | 144 mm | 10.3 | 14 h 05 | 72 | Strong coverage |
| June | 29.1°C | 18.5°C | 119 mm | 7.8 | 14 h 38 | 61 | Strong coverage |
| July | 31°C | 20.5°C | 116 mm | 7.3 | 14 h 25 | 52 | Strong coverage |
| August | 30.9°C | 19.8°C | 89 mm | 6.4 | 13 h 33 | 58 | Strong coverage |
| September | 27.7°C | 15.5°C | 92 mm | 6.4 | 12 h 22 | 76 | Strong coverage |
| October | 21.6°C | 8.7°C | 106 mm | 7 | 11 h 11 | 67 | Strong coverage |
| November | 15.3°C | 3.4°C | 111 mm | 7.6 | 10 h 10 | 36 | Strong coverage |
| December | 10°C | -0.4°C | 125 mm | 8.3 | 9 h 41 | 9 | 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 | 26.1°C24 Jan 1943 | -31.1°C24 Jan 1963 | 179 mm8 Jan 1920 | 606 mm1937 · driest 12 mm in 1943 | 126 |
| February | 28.9°C17 Feb 1911 | -29.4°C2 Feb 1951 | 173 mm16 Feb 2025 | 339 mm1956 · driest 8 mm in 1947 | 127 |
| March | 33.9°C24 Mar 1910 | -19.4°C5 Mar 1960 | 144 mm2 Mar 1997 | 380 mm1975 · driest 32 mm in 1911 | 127 |
| April | 36.1°C29 Apr 1899 | -6.1°C1 Apr 1923 | 160 mm4 Apr 1968 | 353 mm2011 · driest 30 mm in 1915 | 125 |
| May | 37.8°C28 May 1911 | -1.1°C7 May 1944 | 109 mm19 May 1983 | 350 mm1983 · driest 5 mm in 2005 | 125 |
| June | 42.2°C30 Jun 2012 | 3.3°C1 Jun 1966 | 138 mm5 Jun 1998 | 428 mm1928 · driest 5 mm in 1901 | 127 |
| July | 43.3°C22 Jul 1901 | 6.7°C23 Jul 1947 | 99 mm7 Jul 2016 | 245 mm2026 · driest 10 mm in 2014 | 128 |
| August | 41.7°C8 Aug 1930 | 6.7°C31 Aug 1946 | 193 mm31 Aug 1982 | 270 mm1982 · driest 0 mm in 1999 | 124 |
| September | 41.1°C5 Sep 1925 | -4.4°C27 Sep 1940 | 135 mm22 Sep 1919 | 230 mm1927 · driest 4 mm in 1928 | 125 |
| October | 35.6°C2 Oct 1910 | -7.2°C29 Oct 1952 | 105 mm7 Oct 1927 | 273 mm1919 · driest 0 mm in 1963 | 123 |
| November | 30.6°C5 Nov 1909 | -21.7°C25 Nov 1950 | 107 mm1 Nov 1903 | 359 mm1957 · driest 0 mm in 1910 | 128 |
| December | 26.1°C31 Dec 1951 | -27.8°C9 Dec 1917 | 125 mm22 Dec 1990 | 358 mm1990 · driest 19 mm in 1976 | 129 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 19 | 3 | <1 |
| February | <1 | 0 | 16 | 4 | <1 |
| March | 3 | <1 | 9 | 4 | <1 |
| April | 9 | <1 | 2 | 5 | 0 |
| May | 18 | 4 | 0 | 4 | 0 |
| June | 25 | 13 | 0 | 4 | 0 |
| July | 28 | 20 | 0 | 3 | 0 |
| August | 28 | 19 | 0 | 3 | 0 |
| September | 22 | 9 | 0 | 3 | 0 |
| October | 10 | <1 | 1 | 3 | 0 |
| November | 1 | 0 | 8 | 3 | <1 |
| December | 0 | 0 | 16 | 4 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 3% | 27% | 12% | 29% | 4.6–12.2°C |
| February | 7% | 29% | 13% | 33% | 6.2–14.3°C |
| March | 23% | 30% | 14% | 37% | 12.3–20.3°C |
| April | 47% | 31% | 14% | 37% | 19.4–24.5°C |
| May | 65% | 29% | 13% | 34% | 23.7–28.1°C |
| June | 75% | 25% | 11% | 26% | 28.2–32.4°C |
| July | 75% | 25% | 11% | 24% | 30.0–34.0°C |
| August | 78% | 22% | 9% | 22% | 29.4–34.0°C |
| September | 77% | 21% | 9% | 19% | 26.0–31.4°C |
| October | 59% | 20% | 9% | 18% | 20.3–25.4°C |
| November | 22% | 25% | 12% | 25% | 13.1–18.4°C |
| December | 4% | 27% | 13% | 30% | 7.0–13.2°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