September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Wee Town: typically 24.8°C by day, 10.5°C at night, with 52 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 85 — days reach only 0.3°C, 24° below the 24°C the score treats as ideal, and nights drop to -11.8°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 | 0.3°C | -11.8°C | 13 mm | 2.8 | 9 h 25 | 5 | Good coverage |
| February | 2.2°C | -10.1°C | 17 mm | 3.3 | 10 h 30 | 5 | Good coverage |
| March | 9.2°C | -3.9°C | 36 mm | 4.7 | 11 h 48 | 15 | Good coverage |
| April | 16°C | 2.1°C | 76 mm | 7.2 | 13 h 18 | 41 | Good coverage |
| May | 21.9°C | 8.6°C | 104 mm | 9.3 | 14 h 33 | 66 | Good coverage |
| June | 27.3°C | 14.5°C | 116 mm | 8.8 | 15 h 15 | 72 | Good coverage |
| July | 29.7°C | 17.3°C | 71 mm | 5.8 | 14 h 58 | 69 | Good coverage |
| August | 28.1°C | 15.7°C | 99 mm | 7.4 | 13 h 53 | 72 | Good coverage |
| September | 24.8°C | 10.5°C | 52 mm | 5.3 | 12 h 26 | 85 | Good coverage |
| October | 17°C | 2.8°C | 60 mm | 5.6 | 10 h 59 | 49 | Good coverage |
| November | 9.7°C | -4.2°C | 30 mm | 3.3 | 9 h 44 | 18 | Good coverage |
| December | 1.7°C | -10.3°C | 23 mm | 3.8 | 9 h 07 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 22.8°C26 Jan 2002 | -33.9°C1 Jan 2018 | 22 mm22 Jan 2018 | 57 mm2023 · driest 1 mm in 2019 | 26 |
| February | 24.4°C26 Feb 2024 | -34.4°C15 Feb 2021 | 24 mm13 Feb 2005 | 39 mm2012 · driest 0 mm in 1999 | 26 |
| March | 31.7°C16 Mar 2015 | -27.2°C12 Mar 1998 | 84 mm14 Mar 2021 | 160 mm2021 · driest 9 mm in 2015 | 26 |
| April | 33.3°C15 Apr 2002 | -14.4°C4 Apr 2018 | 104 mm14 Apr 2012 | 151 mm2012 · driest 6 mm in 2020 | 27 |
| May | 37.8°C14 May 2013 | -4.4°C4 May 2005 | 60 mm23 May 2004 | 219 mm2008 · driest 12 mm in 2009 | 26 |
| June | 38.3°C27 Jun 2012 | 3.9°C2 Jun 2022 | 89 mm16 Jun 2009 | 271 mm2014 · driest 23 mm in 2012 | 27 |
| July | 38.9°C22 Jul 2012 | 6.1°C28 Jul 2005 | 99 mm3 Jul 1998 | 197 mm1998 · driest 0 mm in 2012 | 26 |
| August | 37.2°C23 Aug 2023 | 4.4°C20 Aug 2004 | 123 mm23 Aug 2007 | 229 mm2007 · driest 21 mm in 2012 | 26 |
| September | 37.2°C2 Sep 2023 | -2.8°C30 Sep 2003 | 89 mm10 Sep 2003 | 135 mm2003 · driest 0 mm in 2024 | 27 |
| October | 35.0°C11 Oct 2015 | -11.7°C31 Oct 2002 | 91 mm26 Oct 2023 | 187 mm2007 · driest 4 mm in 1999 | 26 |
| November | 28.3°C3 Nov 2020 | -22.2°C21 Nov 2000 | 64 mm5 Nov 2000 | 84 mm1998 · driest 1 mm in 2017 | 26 |
| December | 20.0°C2 Dec 1998 | -33.9°C31 Dec 2017 | 37 mm1 Dec 2018 | 70 mm2018 · driest 1 mm in 2001 | 26 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 4 |
| February | 0 | 0 | 27 | <1 | 4 |
| March | <1 | <1 | 23 | <1 | 2 |
| April | 3 | <1 | 11 | 2 | 1 |
| May | 11 | 3 | 2 | 4 | <1 |
| June | 23 | 10 | 0 | 4 | 0 |
| July | 29 | 15 | 0 | 2 | 0 |
| August | 26 | 10 | 0 | 3 | 0 |
| September | 16 | 5 | <1 | 2 | 0 |
| October | 4 | <1 | 10 | 2 | <1 |
| November | <1 | 0 | 24 | 1 | 1 |
| December | 0 | 0 | 30 | <1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 9% | 1% | 5% | -3.1–3.7°C |
| February | 2% | 11% | 1% | 5% | -3.1–7.4°C |
| March | 11% | 14% | 3% | 11% | 5.4–13.0°C |
| April | 27% | 22% | 7% | 23% | 13.4–18.4°C |
| May | 49% | 29% | 12% | 35% | 19.9–25.0°C |
| June | 70% | 27% | 12% | 33% | 25.3–29.9°C |
| July | 81% | 19% | 9% | 17% | 28.0–30.9°C |
| August | 77% | 23% | 10% | 19% | 26.6–29.8°C |
| September | 74% | 17% | 6% | 16% | 23.1–27.6°C |
| October | 34% | 18% | 6% | 13% | 14.3–19.6°C |
| November | 11% | 10% | 3% | 7% | 6.5–12.8°C |
| December | <1% | 12% | 2% | 6% | -2.0–5.6°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