April
April · October · March
United States · 1991–2020
April leads for comfortable weather in Mason: typically 26.3°C by day, 10.4°C at night, with 53 mm of rain. Based on measured 1991–2020 NOAA station history.
April · October · March
July · August · June
November · March · February
The weakest month is January, scoring 48 against April’s 81 — nights drop to 0.4°C, and days reach only 16.3°C, 8° 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 | 16.3°C | 0.4°C | 32 mm | 3.6 | 10 h 21 | 48 | Strong coverage |
| February | 18.5°C | 2.6°C | 45 mm | 4.2 | 11 h 03 | 57 | Strong coverage |
| March | 22.3°C | 6.7°C | 53 mm | 5.1 | 11 h 54 | 75 | Strong coverage |
| April | 26.3°C | 10.4°C | 53 mm | 4.2 | 12 h 53 | 81 | Strong coverage |
| May | 29.7°C | 15.9°C | 95 mm | 6.6 | 13 h 41 | 68 | Strong coverage |
| June | 33.4°C | 19.7°C | 77 mm | 5.6 | 14 h 07 | 52 | Strong coverage |
| July | 35.1°C | 21.1°C | 57 mm | 4 | 13 h 57 | 49 | Strong coverage |
| August | 35.4°C | 20.8°C | 49 mm | 3.8 | 13 h 16 | 49 | Strong coverage |
| September | 32°C | 17.4°C | 73 mm | 5 | 12 h 19 | 62 | Strong coverage |
| October | 27.2°C | 11.2°C | 58 mm | 4.4 | 11 h 22 | 78 | Strong coverage |
| November | 21.4°C | 5.9°C | 48 mm | 4.1 | 10 h 33 | 72 | Strong coverage |
| December | 17.4°C | 1.6°C | 37 mm | 4.1 | 10 h 10 | 53 | 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 | 32.2°C25 Jan 2017 | -14.4°C11 Jan 1982 | 76 mm20 Jan 1968 | 173 mm1968 · driest 0 mm in 2026 | 68 |
| February | 37.8°C23 Feb 1996 | -16.1°C2 Feb 1985 | 128 mm20 Feb 1997 | 220 mm1997 · driest 0 mm in 2022 | 70 |
| March | 37.2°C22 Mar 2026 | -11.7°C2 Mar 1980 | 65 mm7 Mar 1970 | 140 mm2020 · driest 0 mm in 2025 | 68 |
| April | 38.3°C27 Apr 2012 | -3.9°C4 Apr 1987 | 94 mm16 Apr 2010 | 157 mm2010 · driest 0 mm in 1961 | 68 |
| May | 42.2°C8 May 2022 | 2.2°C4 May 1970 | 144 mm25 May 2010 | 255 mm2015 · driest 0 mm in 2026 | 66 |
| June | 43.9°C21 Jun 2023 | 7.8°C1 Jun 1964 | 140 mm27 Jun 2007 | 335 mm2007 · driest 0 mm in 1967 | 66 |
| July | 43.9°C24 Jul 2018 | 12.2°C23 Jul 1970 | 102 mm13 Jul 2025 | 237 mm2007 · driest 0 mm in 2000 | 67 |
| August | 43.3°C17 Aug 2023 | 10.6°C14 Aug 1967 | 113 mm2 Aug 1978 | 241 mm1971 · driest 0 mm in 1997 | 64 |
| September | 42.8°C8 Sep 2023 | 2.2°C22 Sep 1983 | 130 mm8 Sep 1980 | 300 mm2003 · driest 0 mm in 2024 | 63 |
| October | 38.9°C12 Oct 2020 | -3.3°C30 Oct 1980 | 182 mm5 Oct 1969 | 308 mm2018 · driest 0 mm in 1987 | 66 |
| November | 33.9°C3 Nov 2017 | -10.0°C24 Nov 1970 | 86 mm4 Nov 2000 | 259 mm2000 · driest 0 mm in 1988 | 66 |
| December | 31.1°C11 Dec 2021 | -16.1°C30 Dec 1983 | 71 mm28 Dec 1994 | 110 mm1960 · driest 0 mm in 1977 | 66 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 3 | <1 | 15 | <1 |
| February | 5 | <1 | 10 | 1 |
| March | 11 | 2 | 4 | 2 |
| April | 17 | 6 | <1 | 2 |
| May | 23 | 14 | 0 | 3 |
| June | 27 | 24 | 0 | 2 |
| July | 27 | 26 | 0 | 2 |
| August | 27 | 26 | 0 | 2 |
| September | 25 | 21 | 0 | 2 |
| October | 20 | 10 | <1 | 2 |
| November | 8 | <1 | 4 | 1 |
| December | 3 | <1 | 12 | 1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was April (scoring 82); on 2011–2025 it is March (85). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 32% | 11% | 3% | 7% | 12.9–19.7°C |
| February | 42% | 14% | 5% | 10% | 14.5–21.9°C |
| March | 63% | 13% | 5% | 7% | 18.8–25.5°C |
| April | 78% | 14% | 6% | 12% | 24.3–28.8°C |
| May | 77% | 20% | 10% | 19% | 27.2–31.5°C |
| June | 82% | 15% | 7% | 12% | 31.0–36.0°C |
| July | 88% | 11% | 5% | 8% | 32.9–37.6°C |
| August | 87% | 12% | 5% | 11% | 33.1–37.4°C |
| September | 82% | 16% | 8% | 13% | 29.9–34.3°C |
| October | 80% | 13% | 6% | 9% | 24.4–29.3°C |
| November | 60% | 12% | 4% | 10% | 18.4–24.0°C |
| December | 37% | 11% | 3% | 6% | 14.6–19.6°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