October
October · April · May
United States · 1991–2020
October leads for comfortable weather in Richlands: typically 23.7°C by day, 11°C at night, with 97 mm of rain. Based on measured 1991–2020 NOAA station history.
October · April · May
June · July · September
April · October · March
The weakest month is January, scoring 26 against October’s 80 — days reach only 12.8°C, 11° below the 24°C the score treats as ideal, and nights drop to 0°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 | 12.8°C | 0°C | 79 mm | 7.2 | 10 h 03 | 26 | Good coverage |
| February | 14.9°C | 1.2°C | 95 mm | 7.4 | 10 h 52 | 33 | Good coverage |
| March | 18.2°C | 3.9°C | 81 mm | 6.7 | 11 h 52 | 51 | Good coverage |
| April | 23.2°C | 8.3°C | 93 mm | 6 | 13 h 01 | 75 | Good coverage |
| May | 26.9°C | 13.8°C | 139 mm | 7.8 | 13 h 58 | 70 | Good coverage |
| June | 30.8°C | 18.5°C | 121 mm | 8.4 | 14 h 29 | 54 | Good coverage |
| July | 32.4°C | 20.5°C | 147 mm | 8.9 | 14 h 17 | 42 | Good coverage |
| August | 31.4°C | 20.1°C | 176 mm | 10.5 | 13 h 28 | 40 | Good coverage |
| September | 28.7°C | 17.4°C | 157 mm | 8.2 | 12 h 21 | 58 | Good coverage |
| October | 23.7°C | 11°C | 97 mm | 6.2 | 11 h 15 | 80 | Good coverage |
| November | 18°C | 4.2°C | 97 mm | 6.4 | 10 h 17 | 49 | Good coverage |
| December | 14.6°C | 1.8°C | 103 mm | 7.7 | 9 h 49 | 31 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 27.8°C26 Jan 2024 | -12.8°C18 Jan 2009 | 79 mm6 Jan 2007 | 161 mm2007 · driest 36 mm in 2026 | 22 |
| February | 28.9°C24 Feb 2023 | -12.2°C21 Feb 2015 | 98 mm7 Feb 2020 | 262 mm2021 · driest 8 mm in 2018 | 21 |
| March | 32.2°C28 Mar 2020 | -9.4°C4 Mar 2009 | 84 mm2 Mar 2007 | 171 mm2024 · driest 25 mm in 2013 | 21 |
| April | 32.8°C16 Apr 2006 | -5.6°C8 Apr 2007 | 113 mm25 Apr 2017 | 184 mm2008 · driest 14 mm in 2010 | 21 |
| May | 37.8°C30 May 2019 | 2.2°C9 May 2020 | 141 mm12 May 2025 | 339 mm2025 · driest 20 mm in 2019 | 21 |
| June | 37.2°C17 Jun 2015 | 7.2°C4 Jun 2023 | 78 mm5 Jun 2015 | 272 mm2006 · driest 12 mm in 2024 | 21 |
| July | 38.9°C31 Jul 2011 | 11.7°C4 Jul 2010 | 71 mm15 Jul 2010 | 341 mm2012 · driest 41 mm in 2020 | 22 |
| August | 38.9°C9 Aug 2007 | 10.6°C7 Aug 2004 | 141 mm22 Aug 2019 | 316 mm2004 · driest 12 mm in 2024 | 22 |
| September | 35.6°C12 Sep 2007 | 5.6°C24 Sep 2022 | 179 mm1 Sep 2006 | 381 mm2010 · driest 6 mm in 2011 | 22 |
| October | 35.6°C3 Oct 2019 | -2.2°C31 Oct 2008 | 169 mm9 Oct 2016 | 292 mm2005 · driest 9 mm in 2024 | 22 |
| November | 29.4°C2 Nov 2004 | -8.9°C19 Nov 2014 | 103 mm22 Nov 2006 | 228 mm2006 · driest 10 mm in 2021 | 22 |
| December | 27.2°C7 Dec 2013 | -10.6°C27 Dec 2022 | 104 mm31 Dec 2015 | 220 mm2023 · driest 16 mm in 2011 | 22 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | <1 | 0 | 17 | 2 |
| February | 2 | 0 | 14 | 2 |
| March | 5 | <1 | 10 | 3 |
| April | 13 | 2 | 2 | 3 |
| May | 22 | 8 | 0 | 4 |
| June | 28 | 20 | 0 | 4 |
| July | 31 | 27 | 0 | 4 |
| August | 30 | 24 | 0 | 5 |
| September | 25 | 13 | 0 | 3 |
| October | 15 | 2 | <1 | 3 |
| November | 2 | 0 | 9 | 3 |
| December | <1 | 0 | 15 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 14% | 23% | 8% | 22% | 9.6–16.0°C |
| February | 18% | 26% | 9% | 25% | 12.4–19.3°C |
| March | 38% | 22% | 10% | 17% | 15.6–22.0°C |
| April | 64% | 19% | 9% | 12% | 22.0–25.1°C |
| May | 73% | 24% | 12% | 26% | 25.5–28.5°C |
| June | 73% | 27% | 12% | 30% | 29.4–32.6°C |
| July | 70% | 31% | 15% | 38% | 31.2–33.8°C |
| August | 69% | 31% | 16% | 39% | 29.9–32.8°C |
| September | 73% | 26% | 11% | 29% | 27.5–30.1°C |
| October | 68% | 18% | 7% | 13% | 21.6–25.6°C |
| November | 33% | 20% | 8% | 17% | 15.6–20.0°C |
| December | 18% | 23% | 11% | 19% | 12.8–17.7°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