September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Archers Fork: typically 25.6°C by day, 13.1°C at night, with 89 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
August · July · June
October · April · May
The weakest month is January, scoring 5 against September’s 80 — days reach only 4°C, 20° 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 | 4°C | -5.9°C | 89 mm | 11.4 | 9 h 40 | 5 | Strong coverage |
| February | 6.2°C | -4.9°C | 81 mm | 10.3 | 10 h 39 | 5 | Strong coverage |
| March | 11.5°C | -1.2°C | 100 mm | 10.5 | 11 h 49 | 14 | Strong coverage |
| April | 18.9°C | 4.3°C | 95 mm | 10.3 | 13 h 11 | 49 | Strong coverage |
| May | 23.7°C | 10.3°C | 109 mm | 12 | 14 h 19 | 72 | Strong coverage |
| June | 27.5°C | 15.3°C | 123 mm | 10.2 | 14 h 56 | 69 | Strong coverage |
| July | 29.1°C | 17.7°C | 124 mm | 10.6 | 14 h 42 | 59 | Strong coverage |
| August | 28.6°C | 17°C | 104 mm | 8.3 | 13 h 43 | 67 | Strong coverage |
| September | 25.6°C | 13.1°C | 89 mm | 7.4 | 12 h 24 | 80 | Strong coverage |
| October | 19.2°C | 6.3°C | 73 mm | 8.3 | 11 h 05 | 58 | Strong coverage |
| November | 12.4°C | 0.4°C | 70 mm | 8.9 | 9 h 57 | 25 | Strong coverage |
| December | 6.6°C | -3°C | 88 mm | 11.1 | 9 h 24 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 25.0°C12 Jan 2020 | -31.1°C19 Jan 1994 | 54 mm12 Jan 2018 | 179 mm1994 · driest 40 mm in 1992 | 34 |
| February | 27.2°C21 Feb 2018 | -22.8°C4 Feb 1996 | 78 mm19 Feb 2000 | 195 mm2018 · driest 24 mm in 2006 | 35 |
| March | 30.0°C31 Mar 1998 | -18.9°C6 Mar 2015 | 77 mm2 Mar 1997 | 221 mm1997 · driest 18 mm in 2003 | 36 |
| April | 32.2°C19 Apr 2002 | -8.3°C6 Apr 1995 | 73 mm23 Apr 2016 | 205 mm2011 · driest 31 mm in 2010 | 36 |
| May | 32.8°C11 May 2015 | -1.7°C10 May 2020 | 65 mm3 May 2010 | 221 mm1990 · driest 6 mm in 2007 | 35 |
| June | 38.3°C26 Jun 1988 | 4.4°C2 Jun 2003 | 86 mm28 Jun 1998 | 292 mm1998 · driest 21 mm in 1988 | 36 |
| July | 40.0°C17 Jul 1988 | 6.7°C1 Jul 1988 | 119 mm13 Jul 2010 | 249 mm2003 · driest 31 mm in 1989 | 36 |
| August | 38.3°C18 Aug 1988 | 8.9°C10 Aug 1989 | 120 mm13 Aug 2013 | 260 mm2013 · driest 15 mm in 2002 | 36 |
| September | 35.6°C7 Sep 1998 | 2.2°C23 Sep 1995 | 101 mm9 Sep 2004 | 238 mm2004 · driest 15 mm in 2007 | 36 |
| October | 35.0°C2 Oct 2019 | -5.0°C21 Oct 1992 | 58 mm10 Oct 1999 | 137 mm2019 · driest 9 mm in 2010 | 36 |
| November | 28.3°C3 Nov 2016 | -11.1°C5 Nov 1991 | 64 mm12 Nov 2022 | 163 mm2003 · driest 13 mm in 2012 | 34 |
| December | 23.9°C28 Dec 2015 | -25.6°C23 Dec 1989 | 65 mm3 Dec 1991 | 232 mm1990 · driest 33 mm in 2014 | 35 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 26 | 3 | 5 |
| February | <1 | 0 | 24 | 3 | 4 |
| March | 1 | <1 | 19 | 4 | 1 |
| April | 6 | <1 | 7 | 3 | <1 |
| May | 12 | 3 | <1 | 3 | 0 |
| June | 22 | 8 | 0 | 4 | 0 |
| July | 28 | 13 | 0 | 4 | 0 |
| August | 27 | 11 | 0 | 3 | 0 |
| September | 15 | 5 | 0 | 2 | 0 |
| October | 6 | <1 | 3 | 2 | 0 |
| November | <1 | 0 | 16 | 2 | <1 |
| December | 0 | 0 | 24 | 3 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 36% | 10% | 50% | 0.9–7.8°C |
| February | 3% | 36% | 10% | 48% | 2.3–9.8°C |
| March | 10% | 33% | 12% | 43% | 8.2–14.8°C |
| April | 30% | 34% | 11% | 46% | 16.4–20.6°C |
| May | 49% | 39% | 12% | 53% | 20.8–26.6°C |
| June | 64% | 33% | 13% | 38% | 26.0–28.9°C |
| July | 66% | 34% | 13% | 41% | 27.6–31.1°C |
| August | 73% | 27% | 11% | 30% | 26.6–30.8°C |
| September | 67% | 25% | 9% | 25% | 23.6–27.8°C |
| October | 35% | 27% | 9% | 29% | 16.9–21.6°C |
| November | 11% | 31% | 8% | 40% | 8.9–15.8°C |
| December | 1% | 36% | 10% | 49% | 3.0–9.6°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