September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Midvale: typically 26.7°C by day, 13°C at night, with 95 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
August · July · June
October · April · May
The weakest month is January, scoring 5 against September’s 75 — days reach only 7.7°C, 16° below the 24°C the score treats as ideal, and nights drop to -4.7°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 | 7.7°C | -4.7°C | 77 mm | 7.1 | 9 h 48 | 5 | Strong coverage |
| February | 10.1°C | -3.8°C | 71 mm | 7 | 10 h 44 | 12 | Strong coverage |
| March | 14.7°C | -0.3°C | 91 mm | 8.5 | 11 h 50 | 29 | Strong coverage |
| April | 20.7°C | 4.5°C | 96 mm | 9.1 | 13 h 07 | 56 | Strong coverage |
| May | 24.8°C | 10°C | 104 mm | 10.3 | 14 h 11 | 72 | Strong coverage |
| June | 28.8°C | 14.9°C | 124 mm | 10.1 | 14 h 46 | 65 | Strong coverage |
| July | 30.7°C | 17.4°C | 98 mm | 9.1 | 14 h 32 | 59 | Strong coverage |
| August | 30.2°C | 16.9°C | 83 mm | 8.6 | 13 h 37 | 65 | Strong coverage |
| September | 26.7°C | 13°C | 95 mm | 7 | 12 h 23 | 75 | Strong coverage |
| October | 20.9°C | 6°C | 78 mm | 6.4 | 11 h 09 | 65 | Strong coverage |
| November | 14.7°C | 0°C | 81 mm | 6.7 | 10 h 05 | 33 | Strong coverage |
| December | 9.2°C | -3.2°C | 90 mm | 7.8 | 9 h 33 | 6 | 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 | 28.9°C31 Jan 2002 | -26.7°C14 Jan 1912 | 64 mm10 Jan 1895 | 193 mm1937 · driest 7 mm in 1981 | 132 |
| February | 28.9°C11 Feb 1932 | -26.7°C6 Feb 1996 | 63 mm14 Feb 1984 | 160 mm2019 · driest 9 mm in 2017 | 133 |
| March | 31.7°C29 Mar 1907 | -20.0°C8 Mar 1960 | 89 mm17 Mar 1936 | 182 mm1994 · driest 12 mm in 1910 | 133 |
| April | 35.0°C27 Apr 1915 | -10.0°C1 Apr 2003 | 97 mm21 Apr 1992 | 237 mm1987 · driest 12 mm in 1942 | 132 |
| May | 36.1°C11 May 2004 | -3.3°C2 May 1963 | 94 mm12 May 1912 | 205 mm2003 · driest 10 mm in 1941 | 133 |
| June | 37.8°C26 Jun 2003 | 1.7°C20 Jun 2002 | 132 mm28 Jun 1995 | 432 mm1995 · driest 21 mm in 1999 | 133 |
| July | 40.6°C22 Jul 1930 | 6.7°C27 Jul 1962 | 71 mm24 Jul 1959 | 240 mm1959 · driest 18 mm in 1930 | 131 |
| August | 39.4°C9 Aug 2007 | 3.9°C24 Aug 1890 | 126 mm20 Aug 1969 | 274 mm1940 · driest 13 mm in 2002 | 131 |
| September | 37.8°C6 Sep 1954 | -1.1°C25 Sep 1963 | 118 mm23 Sep 1907 | 247 mm1945 · driest 3 mm in 2005 | 132 |
| October | 35.6°C4 Oct 2019 | -7.8°C30 Oct 1965 | 135 mm15 Oct 1954 | 282 mm1990 · driest 1 mm in 2000 | 133 |
| November | 30.6°C4 Nov 2003 | -18.3°C16 Nov 1908 | 89 mm4 Nov 1985 | 256 mm1985 · driest 6 mm in 1917 | 132 |
| December | 26.1°C7 Dec 1956 | -23.3°C27 Dec 1914 | 104 mm23 Dec 1907 | 207 mm1996 · driest 1 mm in 1889 | 132 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 25 | 2 | 2 |
| February | <1 | 0 | 22 | 2 | 2 |
| March | 2 | 0 | 18 | 3 | 1 |
| April | 8 | 2 | 6 | 3 | <1 |
| May | 17 | 5 | <1 | 4 | 0 |
| June | 26 | 13 | 0 | 4 | 0 |
| July | 29 | 19 | 0 | 3 | 0 |
| August | 29 | 17 | 0 | 3 | 0 |
| September | 20 | 8 | 0 | 3 | 0 |
| October | 7 | <1 | 5 | 2 | 0 |
| November | 1 | 0 | 18 | 3 | <1 |
| December | 0 | 0 | 24 | 3 | 2 |
The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 82); on 2011–2025 it is May (81). 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 | 2% | 27% | 9% | 25% | 4.7–11.1°C |
| February | 4% | 27% | 10% | 27% | 5.7–12.5°C |
| March | 17% | 30% | 11% | 33% | 11.2–17.5°C |
| April | 42% | 29% | 10% | 31% | 17.7–23.0°C |
| May | 61% | 32% | 11% | 38% | 22.5–27.3°C |
| June | 67% | 32% | 11% | 35% | 26.5–30.4°C |
| July | 68% | 32% | 12% | 36% | 28.5–32.1°C |
| August | 70% | 30% | 10% | 31% | 27.7–31.4°C |
| September | 73% | 24% | 9% | 22% | 24.3–29.3°C |
| October | 51% | 19% | 8% | 16% | 18.8–22.9°C |
| November | 16% | 22% | 8% | 18% | 11.9–17.0°C |
| December | 3% | 24% | 9% | 22% | 6.2–11.8°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