September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Bethany: typically 24.4°C by day, 13.1°C at night, with 81 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
October · May · September
The weakest month is January, scoring 5 against September’s 85 — days reach only 2.7°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 | 2.7°C | -5.5°C | 70 mm | 8.7 | 9 h 36 | 5 | Good coverage |
| February | 4.6°C | -4.3°C | 57 mm | 8.2 | 10 h 36 | 5 | Good coverage |
| March | 10.1°C | -0.2°C | 74 mm | 8.8 | 11 h 49 | 16 | Good coverage |
| April | 17.2°C | 5.6°C | 85 mm | 10.8 | 13 h 13 | 47 | Good coverage |
| May | 22.3°C | 10.9°C | 106 mm | 11.4 | 14 h 23 | 70 | Good coverage |
| June | 25.9°C | 15.2°C | 112 mm | 10.3 | 15 h 01 | 76 | Good coverage |
| July | 28.3°C | 17.4°C | 83 mm | 8.9 | 14 h 46 | 69 | Good coverage |
| August | 27.7°C | 16.7°C | 96 mm | 8.6 | 13 h 46 | 71 | Good coverage |
| September | 24.4°C | 13.1°C | 81 mm | 7.5 | 12 h 24 | 85 | Good coverage |
| October | 17.6°C | 7.3°C | 77 mm | 9.2 | 11 h 04 | 53 | Good coverage |
| November | 11.2°C | 2.1°C | 63 mm | 7.9 | 9 h 54 | 26 | Good coverage |
| December | 5.1°C | -2.4°C | 70 mm | 8.2 | 9 h 19 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 23.3°C25 Jan 1950 | -23.2°C7 Jan 2014 | 53 mm26 Jan 1952 | 176 mm1950 · driest 11 mm in 2025 | 33 |
| February | 25.6°C20 Feb 2018 | -21.6°C16 Feb 2015 | 49 mm15 Feb 2018 | 165 mm2018 · driest 13 mm in 2026 | 33 |
| March | 29.4°C22 Mar 2026 | -18.8°C6 Mar 2015 | 38 mm23 Mar 1953 | 152 mm2026 · driest 26 mm in 2003 | 33 |
| April | 30.0°C30 Apr 2017 | -8.3°C14 Apr 1950 | 61 mm2 Apr 2024 | 169 mm2024 · driest 33 mm in 2012 | 34 |
| May | 32.8°C5 May 1949 | -2.1°C9 May 2020 | 55 mm19 May 2000 | 171 mm2003 · driest 45 mm in 2007 | 34 |
| June | 36.1°C29 Jun 2012 | 2.8°C2 Jun 2003 | 57 mm10 Jun 2018 | 230 mm1998 · driest 44 mm in 2024 | 34 |
| July | 36.7°C7 Jul 2012 | 7.8°C3 Jul 2001 | 70 mm26 Jul 2004 | 157 mm1950 · driest 15 mm in 2020 | 34 |
| August | 37.2°C27 Aug 1948 | 5.6°C21 Aug 1950 | 78 mm6 Aug 2000 | 207 mm2021 · driest 15 mm in 2025 | 33 |
| September | 35.0°C12 Sep 1952 | 0.6°C22 Sep 1999 | 105 mm29 Sep 2015 | 235 mm2018 · driest 17 mm in 2014 | 33 |
| October | 32.2°C1 Oct 2019 | -7.2°C21 Oct 1952 | 41 mm17 Oct 2006 | 155 mm2019 · driest 18 mm in 2024 | 33 |
| November | 28.3°C5 Nov 1948 | -13.3°C25 Nov 1950 | 58 mm11 Nov 2022 | 165 mm1950 · driest 9 mm in 2012 | 33 |
| December | 21.7°C5 Dec 2001 | -21.7°C16 Dec 1951 | 43 mm17 Dec 2001 | 140 mm2008 · driest 26 mm in 2010 | 33 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 25 | 2 |
| February | <1 | 0 | 23 | 2 |
| March | <1 | 0 | 18 | 3 |
| April | 4 | <1 | 5 | 3 |
| May | 12 | 1 | <1 | 4 |
| June | 19 | 5 | 0 | 4 |
| July | 27 | 10 | 0 | 3 |
| August | 26 | 8 | 0 | 3 |
| September | 15 | 4 | 0 | 3 |
| October | 3 | <1 | 2 | 3 |
| November | <1 | 0 | 12 | 2 |
| December | 0 | 0 | 23 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 29% | 8% | 36% | -0.4–6.9°C |
| February | 1% | 29% | 6% | 33% | 1.1–8.8°C |
| March | 9% | 30% | 8% | 38% | 6.7–14.7°C |
| April | 24% | 37% | 9% | 49% | 14.2–19.1°C |
| May | 46% | 37% | 12% | 49% | 20.1–24.4°C |
| June | 65% | 33% | 13% | 40% | 24.8–28.2°C |
| July | 72% | 28% | 10% | 31% | 26.4–30.5°C |
| August | 73% | 27% | 11% | 28% | 26.2–29.7°C |
| September | 67% | 24% | 8% | 25% | 22.5–26.3°C |
| October | 32% | 28% | 8% | 32% | 15.5–20.4°C |
| November | 7% | 27% | 7% | 28% | 8.2–13.9°C |
| December | <1% | 27% | 7% | 31% | 1.8–8.8°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