September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Arkdale: typically 23°C by day, 9.4°C at night, with 90 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
September · May · October
The weakest month is January, scoring 5 against September’s 73 — days reach only -3.7°C, 28° 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 | -3.7°C | -14.4°C | 32 mm | 5.8 | 9 h 14 | 5 | Good coverage |
| February | -2°C | -14.4°C | 33 mm | 5.2 | 10 h 24 | 5 | Good coverage |
| March | 5.9°C | -6.3°C | 52 mm | 7.3 | 11 h 47 | 5 | Good coverage |
| April | 13°C | -0.1°C | 88 mm | 9.2 | 13 h 23 | 24 | Good coverage |
| May | 20.3°C | 7.1°C | 115 mm | 10.9 | 14 h 43 | 55 | Good coverage |
| June | 25.8°C | 13°C | 122 mm | 10 | 15 h 28 | 72 | Good coverage |
| July | 28.4°C | 15.1°C | 108 mm | 7.8 | 15 h 10 | 71 | Good coverage |
| August | 26.9°C | 13.6°C | 119 mm | 7.7 | 14 h 00 | 72 | Good coverage |
| September | 23°C | 9.4°C | 90 mm | 9 | 12 h 27 | 73 | Good coverage |
| October | 14.6°C | 2.3°C | 75 mm | 8 | 10 h 55 | 36 | Good coverage |
| November | 6.8°C | -3.8°C | 46 mm | 5.5 | 9 h 34 | 5 | Good coverage |
| December | -0.8°C | -10.1°C | 49 mm | 6.7 | 8 h 54 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 13.9°C31 Jan 2025 | -40.0°C7 Jan 1942 | 42 mm9 Jan 2026 | 69 mm1937 · driest 2 mm in 2025 | 40 |
| February | 21.7°C28 Feb 2024 | -37.8°C1 Feb 2019 | 29 mm21 Feb 2011 | 74 mm2019 · driest 5 mm in 1931 | 42 |
| March | 28.3°C18 Mar 2012 | -31.7°C3 Mar 2014 | 71 mm16 Mar 2016 | 159 mm2016 · driest 11 mm in 1937 | 42 |
| April | 31.1°C10 Apr 1930 | -13.9°C6 Apr 2018 | 64 mm13 Apr 2014 | 210 mm2026 · driest 20 mm in 1932 | 35 |
| May | 40.0°C31 May 1934 | -8.3°C3 May 2004 | 72 mm22 May 2024 | 230 mm2004 · driest 13 mm in 1934 | 36 |
| June | 38.9°C30 Jun 1931 | -1.7°C8 Jun 1938 | 152 mm25 Jun 1934 | 221 mm2013 · driest 20 mm in 1938 | 36 |
| July | 41.1°C13 Jul 1936 | 4.4°C13 Jul 1940 | 149 mm26 Jul 2005 | 238 mm2010 · driest 19 mm in 2012 | 37 |
| August | 38.3°C24 Aug 2023 | -0.6°C21 Aug 2004 | 104 mm28 Aug 2018 | 240 mm2007 · driest 18 mm in 1930 | 35 |
| September | 36.7°C4 Sep 2023 | -5.0°C29 Sep 1941 | 89 mm4 Sep 2018 | 232 mm2016 · driest 15 mm in 2009 | 35 |
| October | 31.1°C2 Oct 2023 | -10.6°C22 Oct 1930 | 84 mm20 Oct 1937 | 144 mm1937 · driest 24 mm in 2021 | 35 |
| November | 25.6°C1 Nov 1938 | -26.1°C30 Nov 1947 | 47 mm17 Nov 1931 | 141 mm1934 · driest 3 mm in 2007 | 40 |
| December | 18.3°C16 Dec 2021 | -33.9°C3 Dec 1940 | 51 mm14 Dec 2015 | 153 mm2015 · driest 6 mm in 1943 | 40 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 8 |
| February | 0 | 0 | 28 | <1 | 8 |
| March | <1 | 0 | 26 | 1 | 4 |
| April | 2 | <1 | 16 | 3 | 2 |
| May | 8 | 2 | 3 | 4 | <1 |
| June | 19 | 5 | 0 | 4 | 0 |
| July | 26 | 11 | 0 | 3 | 0 |
| August | 24 | 6 | <1 | 3 | 0 |
| September | 12 | 3 | 1 | 3 | 0 |
| October | 2 | <1 | 12 | 3 | <1 |
| November | 0 | 0 | 23 | 1 | 2 |
| December | 0 | 0 | 29 | 2 | 8 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 19% | 3% | 14% | -6.6–0.8°C |
| February | <1% | 19% | 3% | 16% | -5.2–2.6°C |
| March | 4% | 24% | 5% | 26% | 2.2–10.2°C |
| April | 14% | 33% | 11% | 41% | 10.1–15.5°C |
| May | 42% | 34% | 12% | 36% | 18.9–23.5°C |
| June | 62% | 35% | 14% | 40% | 24.3–29.1°C |
| July | 73% | 27% | 12% | 27% | 27.2–30.9°C |
| August | 72% | 26% | 11% | 21% | 25.3–28.7°C |
| September | 55% | 28% | 9% | 31% | 20.7–25.2°C |
| October | 20% | 25% | 7% | 20% | 12.3–17.9°C |
| November | 3% | 22% | 5% | 21% | 4.1–9.9°C |
| December | 0% | 21% | 5% | 15% | -3.4–2.9°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