September
September · May · August
United States · 1991–2020
September leads for comfortable weather in Shelburn: typically 26°C by day, 13.5°C at night, with 97 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · August
August · July · June
October · April · May
The weakest month is January, scoring 5 against September’s 79 — days reach only 3.1°C, 21° 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 | 3.1°C | -6.8°C | 95 mm | 8.3 | 9 h 41 | 5 | Strong coverage |
| February | 5.7°C | -5.2°C | 76 mm | 7.7 | 10 h 40 | 5 | Strong coverage |
| March | 11.6°C | 0°C | 94 mm | 8.4 | 11 h 50 | 19 | Strong coverage |
| April | 18.4°C | 6.2°C | 129 mm | 10 | 13 h 10 | 46 | Strong coverage |
| May | 23.5°C | 11.8°C | 123 mm | 10 | 14 h 18 | 74 | Strong coverage |
| June | 28°C | 16.6°C | 120 mm | 8.6 | 14 h 54 | 67 | Strong coverage |
| July | 29.5°C | 18.6°C | 122 mm | 8.2 | 14 h 40 | 59 | Strong coverage |
| August | 29°C | 17.6°C | 82 mm | 6.2 | 13 h 42 | 69 | Strong coverage |
| September | 26°C | 13.5°C | 97 mm | 6.2 | 12 h 24 | 79 | Strong coverage |
| October | 19.5°C | 6.9°C | 96 mm | 6.9 | 11 h 06 | 59 | Strong coverage |
| November | 12°C | 0.9°C | 100 mm | 7.2 | 9 h 58 | 22 | Strong coverage |
| December | 5.6°C | -3.7°C | 88 mm | 8.3 | 9 h 25 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 19.4°C17 Jan 1990 | -36.1°C19 Jan 1994 | 84 mm22 Jan 1999 | 226 mm2005 · driest 1 mm in 2022 | 36 |
| February | 24.4°C21 Feb 2018 | -25.6°C4 Feb 1996 | 64 mm7 Feb 1999 | 155 mm2022 · driest 17 mm in 2004 | 36 |
| March | 28.3°C22 Mar 2012 | -20.0°C6 Mar 2015 | 80 mm20 Mar 2020 | 216 mm2006 · driest 7 mm in 1994 | 34 |
| April | 30.6°C16 Apr 2006 | -7.2°C8 Apr 1990 | 100 mm5 Apr 2025 | 317 mm2011 · driest 42 mm in 2004 | 35 |
| May | 35.0°C31 May 1998 | -5.6°C3 May 2002 | 84 mm13 May 2002 | 223 mm2002 · driest 45 mm in 2012 | 35 |
| June | 39.4°C29 Jun 2012 | 3.3°C22 Jun 1992 | 150 mm8 Jun 2008 | 345 mm2008 · driest 12 mm in 2012 | 35 |
| July | 40.0°C8 Jul 2012 | 8.9°C6 Jul 2001 | 104 mm12 Jul 1989 | 243 mm1989 · driest 34 mm in 2012 | 36 |
| August | 36.7°C3 Aug 2012 | 8.3°C12 Aug 2004 | 71 mm7 Aug 1995 | 209 mm2000 · driest 2 mm in 1996 | 36 |
| September | 36.1°C2 Sep 2011 | 0.0°C23 Sep 1995 | 99 mm9 Sep 2018 | 197 mm2000 · driest 7 mm in 2020 | 36 |
| October | 33.3°C1 Oct 2019 | -4.4°C19 Oct 1992 | 107 mm5 Oct 2000 | 247 mm2001 · driest 1 mm in 2024 | 36 |
| November | 27.8°C5 Nov 2003 | -16.7°C13 Nov 2019 | 93 mm14 Nov 1993 | 192 mm1993 · driest 1 mm in 2025 | 36 |
| December | 22.8°C7 Dec 1998 | -30.0°C22 Dec 1989 | 62 mm30 Dec 2019 | 159 mm2015 · driest 0 mm in 2025 | 36 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 24 | 3 | 3 |
| February | 0 | 0 | 22 | 2 | 3 |
| March | 1 | 0 | 16 | 3 | 1 |
| April | 4 | <1 | 4 | 4 | <1 |
| May | 13 | 3 | <1 | 4 | 0 |
| June | 23 | 10 | 0 | 4 | 0 |
| July | 28 | 15 | 0 | 4 | 0 |
| August | 28 | 12 | 0 | 3 | 0 |
| September | 18 | 7 | <1 | 3 | 0 |
| October | 6 | <1 | 3 | 3 | 0 |
| November | <1 | 0 | 14 | 3 | <1 |
| December | 0 | 0 | 21 | 3 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 26% | 9% | 29% | -0.2–7.2°C |
| February | 1% | 27% | 9% | 27% | 1.0–9.9°C |
| March | 11% | 26% | 10% | 31% | 8.9–15.5°C |
| April | 28% | 34% | 15% | 42% | 16.7–20.7°C |
| May | 53% | 33% | 14% | 38% | 21.4–26.0°C |
| June | 71% | 28% | 13% | 31% | 26.7–29.3°C |
| July | 72% | 28% | 12% | 28% | 28.0–31.3°C |
| August | 80% | 20% | 9% | 18% | 27.5–30.5°C |
| September | 75% | 20% | 9% | 19% | 24.0–28.0°C |
| October | 42% | 21% | 9% | 23% | 17.8–21.7°C |
| November | 11% | 23% | 11% | 18% | 8.2–15.1°C |
| December | <1% | 28% | 11% | 27% | 1.8–8.7°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