September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Dry Fork (historical): typically 27.3°C by day, 14.8°C at night, with 91 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
June · August · July
October · April · September
The weakest month is January, scoring 5 against September’s 78 — days reach only 6.4°C, 18° 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 | 6.4°C | -3.8°C | 119 mm | 8.6 | 9 h 56 | 5 | Good coverage |
| February | 9.1°C | -1.8°C | 145 mm | 9.7 | 10 h 48 | 5 | Good coverage |
| March | 15.2°C | 3°C | 134 mm | 9.4 | 11 h 51 | 30 | Good coverage |
| April | 20.6°C | 7.8°C | 152 mm | 8.5 | 13 h 04 | 55 | Good coverage |
| May | 25°C | 13°C | 147 mm | 9.7 | 14 h 04 | 71 | Good coverage |
| June | 28.9°C | 17.2°C | 82 mm | 6.4 | 14 h 37 | 70 | Good coverage |
| July | 30.2°C | 19°C | 119 mm | 8.5 | 14 h 24 | 55 | Good coverage |
| August | 30.2°C | 18.7°C | 99 mm | 7.1 | 13 h 32 | 60 | Good coverage |
| September | 27.3°C | 14.8°C | 91 mm | 6.2 | 12 h 22 | 78 | Good coverage |
| October | 21.1°C | 8°C | 81 mm | 6.2 | 11 h 12 | 68 | Good coverage |
| November | 14.5°C | 3°C | 102 mm | 7.4 | 10 h 11 | 34 | Good coverage |
| December | 8.3°C | -1.4°C | 123 mm | 8.5 | 9 h 42 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 22.8°C3 Jan 2006 | -20.6°C7 Jan 2014 | 64 mm28 Jan 2009 | 186 mm2013 · driest 38 mm in 2003 | 21 |
| February | 25.0°C24 Feb 2018 | -16.7°C11 Feb 2011 | 81 mm18 Feb 2022 | 369 mm2019 · driest 31 mm in 2002 | 18 |
| March | 30.6°C15 Mar 2012 | -12.2°C10 Mar 2002 | 58 mm18 Mar 2002 | 267 mm2002 · driest 40 mm in 2005 | 18 |
| April | 31.7°C26 Apr 2009 | -6.7°C8 Apr 2007 | 112 mm28 Apr 2013 | 277 mm2013 · driest 32 mm in 2020 | 19 |
| May | 32.8°C31 May 2006 | 0.6°C3 May 2005 | 90 mm2 May 2009 | 347 mm2009 · driest 14 mm in 2005 | 20 |
| June | 40.0°C30 Jun 2012 | 6.1°C5 Jun 2003 | 64 mm12 Jun 2009 | 181 mm2001 · driest 12 mm in 2003 | 18 |
| July | 39.4°C1 Jul 2012 | 8.9°C24 Jul 2003 | 90 mm7 Jul 2016 | 243 mm2013 · driest 6 mm in 2018 | 20 |
| August | 40.6°C16 Aug 2007 | 12.2°C15 Aug 2013 | 95 mm8 Aug 2013 | 217 mm2013 · driest 4 mm in 2015 | 20 |
| September | 35.6°C3 Sep 2011 | 1.1°C26 Sep 2001 | 159 mm1 Sep 2017 | 209 mm2017 · driest 0 mm in 2019 | 19 |
| October | 31.7°C8 Oct 2007 | -3.3°C19 Oct 2008 | 66 mm23 Oct 2007 | 196 mm2009 · driest 0 mm in 2000 | 19 |
| November | 30.6°C3 Nov 2000 | -10.6°C29 Nov 2013 | 61 mm30 Nov 2010 | 147 mm2001 · driest 12 mm in 2009 | 20 |
| December | 24.4°C26 Dec 2021 | -16.7°C14 Dec 2010 | 83 mm16 Dec 2000 | 202 mm2013 · driest 18 mm in 2020 | 21 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 19 | 3 | 1 |
| February | <1 | 0 | 17 | 5 | 2 |
| March | 2 | <1 | 9 | 4 | <1 |
| April | 7 | <1 | 2 | 4 | 0 |
| May | 14 | 4 | 0 | 4 | 0 |
| June | 21 | 12 | 0 | 3 | 0 |
| July | 21 | 13 | 0 | 3 | 0 |
| August | 23 | 15 | 0 | 3 | 0 |
| September | 19 | 7 | 0 | 3 | 0 |
| October | 7 | <1 | 2 | 2 | 0 |
| November | <1 | <1 | 9 | 3 | 0 |
| December | 0 | 0 | 17 | 3 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 28% | 12% | 31% | 3.4–9.1°C |
| February | 3% | 33% | 17% | 39% | 5.1–12.0°C |
| March | 19% | 29% | 15% | 28% | 12.3–19.1°C |
| April | 42% | 28% | 15% | 37% | 18.3–22.7°C |
| May | 57% | 31% | 16% | 40% | 22.4–27.1°C |
| June | 75% | 23% | 11% | 20% | 27.5–30.2°C |
| July | 73% | 27% | 14% | 31% | 27.6–32.2°C |
| August | 78% | 23% | 10% | 29% | 28.0–31.9°C |
| September | 78% | 20% | 10% | 19% | 25.3–29.8°C |
| October | 50% | 21% | 9% | 22% | 19.1–23.3°C |
| November | 14% | 24% | 10% | 28% | 12.1–17.0°C |
| December | 3% | 28% | 13% | 38% | 5.9–12.3°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