September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Douglass: typically 28.1°C by day, 14.5°C at night, with 79 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
August · July · September
April · October · November
The weakest month is January, scoring 5 against September’s 78 — days reach only 6.7°C, 17° below the 24°C the score treats as ideal, and nights drop to -6.6°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 | 6.7°C | -6.6°C | 22 mm | 3.2 | 9 h 50 | 5 | Good coverage |
| February | 8.7°C | -5°C | 39 mm | 4.1 | 10 h 45 | 12 | Good coverage |
| March | 14.7°C | 0.5°C | 57 mm | 5.3 | 11 h 50 | 38 | Good coverage |
| April | 20.4°C | 6.2°C | 82 mm | 6.1 | 13 h 06 | 63 | Good coverage |
| May | 24.7°C | 12.3°C | 146 mm | 8.1 | 14 h 10 | 73 | Good coverage |
| June | 29.7°C | 17.7°C | 131 mm | 7.4 | 14 h 44 | 59 | Good coverage |
| July | 32.6°C | 20.2°C | 100 mm | 6.5 | 14 h 31 | 50 | Good coverage |
| August | 32.3°C | 19.1°C | 89 mm | 5.6 | 13 h 36 | 55 | Good coverage |
| September | 28.1°C | 14.5°C | 79 mm | 4.5 | 12 h 23 | 78 | Good coverage |
| October | 21.2°C | 7°C | 96 mm | 5.3 | 11 h 09 | 66 | Good coverage |
| November | 14.6°C | 0.5°C | 44 mm | 3.5 | 10 h 06 | 41 | Good coverage |
| December | 7.4°C | -5.4°C | 37 mm | 3.4 | 9 h 35 | 8 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 23.9°C29 Jan 2015 | -25.6°C22 Jan 2025 | 37 mm31 Jan 2021 | 82 mm2021 · driest 0 mm in 2012 | 29 |
| February | 27.2°C28 Feb 2024 | -27.2°C10 Feb 2011 | 49 mm8 Feb 2001 | 109 mm2001 · driest 0 mm in 2006 | 29 |
| March | 35.6°C22 Mar 2026 | -20.6°C4 Mar 2014 | 63 mm29 Mar 2017 | 128 mm2004 · driest 2 mm in 2015 | 28 |
| April | 35.0°C14 Apr 2006 | -8.3°C7 Apr 2018 | 58 mm14 Apr 2007 | 132 mm1999 · driest 5 mm in 2018 | 29 |
| May | 37.2°C5 May 2014 | -0.6°C1 May 2023 | 136 mm8 May 2019 | 352 mm2019 · driest 10 mm in 2017 | 29 |
| June | 40.0°C26 Jun 2012 | 5.0°C6 Jun 1998 | 120 mm28 Jun 2007 | 366 mm2007 · driest 34 mm in 2010 | 29 |
| July | 42.2°C30 Jul 2012 | 11.1°C3 Jul 2014 | 109 mm3 Jul 2016 | 275 mm2016 · driest 6 mm in 2012 | 28 |
| August | 43.3°C3 Aug 2011 | 9.4°C9 Aug 2014 | 107 mm6 Aug 2017 | 204 mm2016 · driest 0 mm in 2000 | 27 |
| September | 43.3°C2 Sep 2000 | 0.0°C28 Sep 2005 | 162 mm12 Sep 2008 | 272 mm2008 · driest 0 mm in 2005 | 28 |
| October | 35.6°C2 Oct 2006 | -7.8°C31 Oct 2019 | 89 mm2 Oct 2002 | 203 mm2018 · driest 11 mm in 2024 | 27 |
| November | 30.0°C9 Nov 2006 | -17.2°C18 Nov 2014 | 84 mm1 Nov 1998 | 189 mm1998 · driest 0 mm in 2005 | 28 |
| December | 25.6°C26 Dec 2021 | -24.4°C19 Dec 2016 | 53 mm20 Dec 2011 | 96 mm1999 · driest 0 mm in 2025 | 28 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | <1 | 2 |
| February | 0 | 0 | 23 | 1 | 2 |
| March | 2 | <1 | 15 | 2 | <1 |
| April | 8 | 1 | 5 | 3 | <1 |
| May | 17 | 4 | <1 | 4 | 0 |
| June | 27 | 16 | 0 | 4 | 0 |
| July | 30 | 24 | 0 | 3 | 0 |
| August | 29 | 21 | 0 | 3 | 0 |
| September | 23 | 12 | 0 | 2 | 0 |
| October | 10 | 2 | 3 | 3 | <1 |
| November | 1 | 0 | 15 | 1 | <1 |
| December | 0 | 0 | 25 | 1 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 3% | 11% | 3% | 4% | 3.7–9.1°C |
| February | 9% | 14% | 4% | 7% | 4.4–13.8°C |
| March | 26% | 19% | 8% | 13% | 12.3–19.2°C |
| April | 48% | 20% | 9% | 22% | 18.0–23.1°C |
| May | 63% | 26% | 13% | 27% | 22.4–26.6°C |
| June | 73% | 27% | 15% | 31% | 27.8–31.4°C |
| July | 80% | 21% | 10% | 17% | 30.5–35.0°C |
| August | 82% | 18% | 8% | 13% | 29.4–35.3°C |
| September | 84% | 14% | 7% | 11% | 25.0–31.0°C |
| October | 54% | 17% | 9% | 13% | 17.6–23.6°C |
| November | 23% | 12% | 4% | 8% | 11.4–17.4°C |
| December | 2% | 10% | 4% | 5% | 5.0–10.9°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