September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Arendtsville: typically 24.8°C by day, 12.9°C at night, with 128 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
October · May · April
The weakest month is January, scoring 5 against September’s 76 — days reach only 3.4°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 | 3.4°C | -6°C | 88 mm | 8.7 | 9 h 37 | 5 | Strong coverage |
| February | 5°C | -5.1°C | 66 mm | 7.4 | 10 h 37 | 5 | Strong coverage |
| March | 9.7°C | -1.2°C | 92 mm | 8.4 | 11 h 49 | 11 | Strong coverage |
| April | 16.8°C | 4.5°C | 98 mm | 9.6 | 13 h 12 | 43 | Strong coverage |
| May | 22.2°C | 10.2°C | 113 mm | 11.1 | 14 h 21 | 67 | Strong coverage |
| June | 27.2°C | 15.2°C | 105 mm | 9.5 | 14 h 59 | 73 | Strong coverage |
| July | 29.8°C | 17.8°C | 92 mm | 8.7 | 14 h 44 | 63 | Strong coverage |
| August | 28.8°C | 16.9°C | 90 mm | 7.8 | 13 h 44 | 69 | Strong coverage |
| September | 24.8°C | 12.9°C | 128 mm | 7.6 | 12 h 24 | 76 | Strong coverage |
| October | 18.2°C | 6.4°C | 97 mm | 7.7 | 11 h 04 | 53 | Strong coverage |
| November | 11.7°C | 1.1°C | 81 mm | 6.9 | 9 h 55 | 24 | Strong coverage |
| December | 5.8°C | -3.1°C | 86 mm | 8 | 9 h 21 | 5 | Strong coverage |
What has changed
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 21.7°C30 Jan 2002 | -27.8°C22 Jan 1985 | 102 mm26 Jan 2023 | 203 mm1979 · driest 7 mm in 1981 | 54 |
| February | 27.2°C22 Feb 2018 | -22.8°C5 Feb 1996 | 57 mm6 Feb 2010 | 192 mm1981 · driest 11 mm in 2002 | 55 |
| March | 30.0°C31 Mar 1998 | -18.9°C6 Mar 2015 | 62 mm29 Mar 1984 | 174 mm1980 · driest 17 mm in 2006 | 55 |
| April | 33.3°C19 Apr 1976 | -10.6°C7 Apr 1982 | 116 mm17 Apr 2011 | 284 mm2011 · driest 16 mm in 2012 | 55 |
| May | 35.0°C31 May 1987 | -2.2°C14 May 1996 | 86 mm16 May 2014 | 224 mm1989 · driest 22 mm in 1977 | 55 |
| June | 37.8°C23 Jun 2024 | 2.2°C8 Jun 1977 | 127 mm26 Jun 2006 | 318 mm2015 · driest 10 mm in 1991 | 55 |
| July | 38.9°C17 Jul 1988 | 7.8°C2 Jul 2007 | 96 mm22 Jul 2018 | 238 mm2018 · driest 21 mm in 1983 | 55 |
| August | 37.8°C21 Aug 1983 | 3.3°C29 Aug 1982 | 125 mm21 Aug 2015 | 214 mm2024 · driest 21 mm in 1995 | 54 |
| September | 35.6°C11 Sep 1983 | 0.0°C23 Sep 1983 | 129 mm6 Sep 1979 | 352 mm1975 · driest 7 mm in 2005 | 54 |
| October | 33.9°C3 Oct 2019 | -6.7°C28 Oct 1976 | 97 mm8 Oct 2005 | 307 mm1976 · driest 18 mm in 2000 | 54 |
| November | 28.3°C1 Nov 2024 | -13.3°C30 Nov 1976 | 100 mm28 Nov 1993 | 195 mm1985 · driest 13 mm in 1976 | 54 |
| December | 24.4°C6 Dec 2001 | -22.2°C25 Dec 1983 | 60 mm5 Dec 1993 | 175 mm1990 · driest 14 mm in 1998 | 54 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 26 | 3 | 4 |
| February | <1 | 0 | 25 | 2 | 4 |
| March | <1 | 0 | 19 | 3 | 2 |
| April | 3 | <1 | 5 | 3 | <1 |
| May | 11 | 3 | <1 | 4 | 0 |
| June | 22 | 9 | 0 | 3 | 0 |
| July | 29 | 16 | 0 | 3 | 0 |
| August | 28 | 13 | 0 | 3 | 0 |
| September | 16 | 4 | 0 | 4 | 0 |
| October | 4 | <1 | 3 | 3 | 0 |
| November | <1 | 0 | 13 | 3 | <1 |
| December | 0 | 0 | 24 | 3 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 27% | 9% | 30% | -0.1–6.3°C |
| February | 1% | 26% | 8% | 29% | 1.7–8.5°C |
| March | 7% | 27% | 10% | 31% | 6.8–13.2°C |
| April | 24% | 31% | 11% | 38% | 14.4–18.9°C |
| May | 47% | 35% | 13% | 47% | 20.1–24.6°C |
| June | 66% | 31% | 11% | 38% | 25.0–28.6°C |
| July | 72% | 28% | 10% | 31% | 27.4–31.9°C |
| August | 73% | 27% | 10% | 30% | 27.1–30.4°C |
| September | 67% | 25% | 11% | 28% | 22.8–26.8°C |
| October | 31% | 25% | 9% | 24% | 15.9–20.1°C |
| November | 7% | 24% | 9% | 25% | 8.7–14.7°C |
| December | <1% | 26% | 9% | 28% | 2.5–8.8°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