September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Camp Herbron: typically 24.2°C by day, 12.1°C at night, with 105 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
May · September · October
The weakest month is January, scoring 5 against September’s 80 — 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 | -6.9°C | 110 mm | 9.7 | 9 h 26 | 5 | Strong coverage |
| February | 4.8°C | -6°C | 97 mm | 8.6 | 10 h 31 | 5 | Strong coverage |
| March | 8.7°C | -2.5°C | 131 mm | 9.3 | 11 h 48 | 5 | Strong coverage |
| April | 15.1°C | 2.8°C | 121 mm | 9.8 | 13 h 17 | 31 | Strong coverage |
| May | 20.8°C | 8.4°C | 95 mm | 10.2 | 14 h 32 | 63 | Strong coverage |
| June | 25.8°C | 13.8°C | 116 mm | 9.2 | 15 h 12 | 75 | Strong coverage |
| July | 29.1°C | 17.4°C | 84 mm | 7.6 | 14 h 56 | 68 | Strong coverage |
| August | 28.2°C | 16.3°C | 93 mm | 7.5 | 13 h 52 | 72 | Strong coverage |
| September | 24.2°C | 12.1°C | 105 mm | 7.4 | 12 h 26 | 80 | Strong coverage |
| October | 17.6°C | 5.7°C | 129 mm | 9.1 | 11 h 00 | 43 | Strong coverage |
| November | 11.5°C | 0.6°C | 110 mm | 8.7 | 9 h 45 | 17 | Strong coverage |
| December | 6°C | -3.8°C | 119 mm | 10.2 | 9 h 08 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 21.1°C29 Jan 2002 | -22.8°C22 Jan 2005 | 88 mm13 Jan 2018 | 213 mm2024 · driest 36 mm in 2025 | 32 |
| February | 21.7°C25 Feb 2017 | -25.0°C5 Feb 1996 | 68 mm13 Feb 2008 | 184 mm2008 · driest 21 mm in 2012 | 32 |
| March | 30.0°C31 Mar 1998 | -17.8°C1 Mar 2015 | 100 mm30 Mar 2010 | 428 mm2010 · driest 10 mm in 2006 | 32 |
| April | 35.6°C17 Apr 2002 | -8.3°C6 Apr 2016 | 72 mm23 Apr 2012 | 205 mm2007 · driest 32 mm in 1999 | 32 |
| May | 36.1°C19 May 2017 | -2.2°C7 May 2001 | 91 mm23 May 2025 | 189 mm2006 · driest 12 mm in 2015 | 32 |
| June | 38.3°C10 Jun 2008 | 3.9°C9 Jun 1997 | 130 mm13 Jun 1998 | 369 mm1998 · driest 9 mm in 1999 | 32 |
| July | 39.4°C22 Jul 2011 | 8.9°C3 Jul 2001 | 104 mm13 Jul 1996 | 245 mm2021 · driest 29 mm in 1998 | 33 |
| August | 38.3°C2 Aug 2006 | 6.1°C29 Aug 1995 | 101 mm11 Aug 2012 | 217 mm2011 · driest 27 mm in 2007 | 32 |
| September | 35.6°C9 Sep 2015 | -0.6°C30 Sep 2000 | 107 mm2 Sep 2021 | 283 mm2018 · driest 19 mm in 2014 | 32 |
| October | 30.6°C6 Oct 2007 | -5.0°C31 Oct 2020 | 130 mm20 Oct 1996 | 378 mm2005 · driest 15 mm in 1994 | 32 |
| November | 26.1°C2 Nov 2024 | -11.7°C25 Nov 2000 | 59 mm22 Nov 2005 | 261 mm2018 · driest 29 mm in 2001 | 32 |
| December | 24.4°C7 Dec 1998 | -17.2°C29 Dec 2017 | 83 mm12 Dec 2024 | 197 mm1996 · driest 40 mm in 1998 | 32 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 4 | 7 |
| February | 0 | 0 | 25 | 4 | 5 |
| March | <1 | 0 | 22 | 4 | 4 |
| April | 2 | <1 | 8 | 4 | <1 |
| May | 8 | 2 | <1 | 3 | 0 |
| June | 19 | 7 | 0 | 3 | 0 |
| July | 27 | 14 | 0 | 3 | 0 |
| August | 25 | 11 | 0 | 3 | 0 |
| September | 13 | 2 | 0 | 3 | 0 |
| October | 2 | <1 | 4 | 4 | <1 |
| November | <1 | 0 | 16 | 3 | <1 |
| December | 0 | 0 | 25 | 4 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 31% | 12% | 38% | 0.6–5.7°C |
| February | <1% | 30% | 12% | 39% | 1.7–7.2°C |
| March | 3% | 31% | 12% | 38% | 6.1–11.3°C |
| April | 15% | 33% | 13% | 42% | 13.0–16.8°C |
| May | 46% | 32% | 10% | 41% | 19.0–22.7°C |
| June | 66% | 31% | 11% | 37% | 24.0–27.7°C |
| July | 73% | 27% | 10% | 27% | 26.8–30.7°C |
| August | 75% | 25% | 10% | 24% | 26.3–29.5°C |
| September | 66% | 26% | 10% | 29% | 22.5–25.5°C |
| October | 26% | 29% | 12% | 33% | 16.4–19.1°C |
| November | 5% | 28% | 11% | 31% | 9.0–13.9°C |
| December | <1% | 33% | 14% | 41% | 3.6–8.3°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