April
April · October · May
United States · 1991–2020
April leads for comfortable weather in Mount Calm: typically 24.9°C by day, 11.6°C at night, with 89 mm of rain. Based on measured 1991–2020 NOAA station history.
April · October · May
July · September · June
November · March · April
The weakest month is January, scoring 36 against April’s 80 — days reach only 14.6°C, 9° below the 24°C the score treats as ideal, and nights drop to 1°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 | 14.6°C | 1°C | 76 mm | 5.9 | 10 h 17 | 36 | Strong coverage |
| February | 17.1°C | 3.4°C | 80 mm | 5.9 | 11 h 00 | 47 | Strong coverage |
| March | 20.8°C | 7.5°C | 94 mm | 6.8 | 11 h 53 | 64 | Strong coverage |
| April | 24.9°C | 11.6°C | 89 mm | 6 | 12 h 55 | 80 | Strong coverage |
| May | 29°C | 16.9°C | 117 mm | 7.1 | 13 h 45 | 65 | Strong coverage |
| June | 33.1°C | 21.1°C | 110 mm | 6.1 | 14 h 13 | 46 | Strong coverage |
| July | 35.5°C | 22.7°C | 48 mm | 3.7 | 14 h 02 | 46 | Strong coverage |
| August | 36°C | 22.5°C | 62 mm | 3.9 | 13 h 18 | 43 | Strong coverage |
| September | 32.3°C | 18.6°C | 82 mm | 4.7 | 12 h 19 | 58 | Strong coverage |
| October | 26.8°C | 12.2°C | 122 mm | 5.8 | 11 h 20 | 71 | Strong coverage |
| November | 20.3°C | 6.5°C | 75 mm | 5.1 | 10 h 30 | 65 | Strong coverage |
| December | 15.8°C | 2.1°C | 88 mm | 6.4 | 10 h 05 | 39 | 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 | 29.4°C4 Jan 2006 | -15.0°C14 Jan 1982 | 129 mm6 Jan 1998 | 188 mm1998 · driest 0 mm in 2023 | 63 |
| February | 35.0°C22 Feb 1996 | -14.4°C4 Feb 1996 | 131 mm12 Feb 2020 | 199 mm1994 · driest 0 mm in 2026 | 64 |
| March | 33.9°C29 Mar 1971 | -9.4°C1 Mar 2009 | 157 mm20 Mar 2012 | 265 mm2007 · driest 2 mm in 2011 | 63 |
| April | 37.8°C10 Apr 1963 | -3.3°C13 Apr 1997 | 153 mm25 Apr 2025 | 365 mm1966 · driest 1 mm in 1983 | 63 |
| May | 38.3°C31 May 1998 | 3.9°C3 May 2013 | 173 mm11 May 2015 | 384 mm2015 · driest 4 mm in 1998 | 64 |
| June | 41.7°C28 Jun 1980 | 10.6°C1 Jun 1997 | 151 mm22 Jun 2011 | 306 mm2000 · driest 3 mm in 1978 | 64 |
| July | 43.3°C19 Jul 2006 | 13.3°C15 Jul 1967 | 117 mm7 Jul 2020 | 155 mm2021 · driest 0 mm in 1993 | 63 |
| August | 43.3°C18 Aug 2000 | 11.1°C28 Aug 1992 | 131 mm14 Aug 1991 | 211 mm1974 · driest 0 mm in 1987 | 63 |
| September | 44.4°C5 Sep 2000 | 3.9°C28 Sep 1996 | 119 mm2 Sep 2020 | 276 mm1967 · driest 2 mm in 1982 | 63 |
| October | 36.7°C4 Oct 2005 | -3.9°C31 Oct 1993 | 424 mm24 Oct 2015 | 591 mm2015 · driest 1 mm in 1963 | 62 |
| November | 33.3°C1 Nov 1992 | -7.8°C28 Nov 1992 | 116 mm20 Nov 1992 | 242 mm2004 · driest 0 mm in 2012 | 62 |
| December | 28.9°C3 Dec 2012 | -20.6°C23 Dec 1989 | 119 mm16 Dec 2001 | 255 mm1991 · driest 6 mm in 2025 | 62 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 2 | 0 | 13 | 2 |
| February | 3 | <1 | 8 | 2 |
| March | 9 | <1 | 3 | 3 |
| April | 17 | 3 | <1 | 3 |
| May | 26 | 14 | 0 | 3 |
| June | 29 | 26 | 0 | 3 |
| July | 30 | 30 | 0 | 2 |
| August | 30 | 29 | 0 | 2 |
| September | 28 | 23 | 0 | 2 |
| October | 20 | 9 | <1 | 3 |
| November | 7 | <1 | 4 | 2 |
| December | 2 | 0 | 11 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 20% | 19% | 6% | 18% | 10.4–16.7°C |
| February | 29% | 21% | 8% | 19% | 12.9–20.6°C |
| March | 50% | 21% | 9% | 16% | 18.2–23.4°C |
| April | 72% | 20% | 9% | 19% | 22.7–26.9°C |
| May | 74% | 25% | 12% | 26% | 27.1–30.3°C |
| June | 81% | 19% | 9% | 18% | 30.9–34.6°C |
| July | 88% | 12% | 5% | 10% | 33.1–37.2°C |
| August | 88% | 13% | 5% | 10% | 33.2–37.3°C |
| September | 82% | 17% | 7% | 14% | 29.6–34.1°C |
| October | 75% | 18% | 9% | 20% | 24.5–28.6°C |
| November | 50% | 18% | 8% | 15% | 17.5–23.0°C |
| December | 24% | 19% | 7% | 20% | 12.3–17.9°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