September
September · August · June
United States · 1991–2020
September leads for comfortable weather in Pleasant Valley: typically 24.8°C by day, 10.5°C at night, with 80 mm of rain. Based on measured 1991–2020 NOAA station history.
September · August · June
July · August · June
October · May · September
The weakest month is January, scoring 5 against September’s 81 — days reach only -0.5°C, 24° 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 | -0.5°C | -11.6°C | 14 mm | 2.8 | 9 h 22 | 5 | Strong coverage |
| February | 2.3°C | -9.4°C | 20 mm | 3.1 | 10 h 29 | 5 | Strong coverage |
| March | 8.9°C | -4°C | 35 mm | 4.3 | 11 h 48 | 15 | Strong coverage |
| April | 15.8°C | 2.2°C | 79 mm | 7 | 13 h 19 | 40 | Strong coverage |
| May | 21.8°C | 8.9°C | 106 mm | 8.6 | 14 h 35 | 67 | Strong coverage |
| June | 27.4°C | 15.2°C | 118 mm | 7.7 | 15 h 17 | 72 | Strong coverage |
| July | 29.6°C | 17.4°C | 87 mm | 5.6 | 15 h 01 | 68 | Strong coverage |
| August | 28.4°C | 16.2°C | 91 mm | 6.1 | 13 h 55 | 73 | Strong coverage |
| September | 24.8°C | 10.5°C | 80 mm | 5.2 | 12 h 26 | 81 | Strong coverage |
| October | 17.8°C | 3.8°C | 63 mm | 4.2 | 10 h 58 | 54 | Strong coverage |
| November | 8.6°C | -3.6°C | 32 mm | 2.9 | 9 h 42 | 16 | Strong coverage |
| December | 1.3°C | -9.5°C | 18 mm | 3.1 | 9 h 04 | 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 | 23.3°C24 Jan 1981 | -38.9°C12 Jan 1912 | 41 mm3 Jan 1949 | 74 mm1936 · driest 0 mm in 2000 | 131 |
| February | 24.4°C22 Feb 1982 | -36.1°C11 Feb 1899 | 52 mm19 Feb 1971 | 94 mm1915 · driest 0 mm in 1988 | 128 |
| March | 33.3°C30 Mar 1943 | -27.2°C4 Mar 1960 | 64 mm8 Mar 1984 | 142 mm1987 · driest 1 mm in 1910 | 129 |
| April | 38.9°C28 Apr 1910 | -17.2°C3 Apr 1936 | 63 mm21 Apr 2016 | 184 mm1920 · driest 5 mm in 1928 | 127 |
| May | 42.2°C29 May 1934 | -7.2°C1 May 1903 | 90 mm26 May 1915 | 230 mm1913 · driest 11 mm in 1940 | 130 |
| June | 42.8°C18 Jun 2021 | 1.7°C12 Jun 1903 | 110 mm26 Jun 2018 | 363 mm2018 · driest 17 mm in 2012 | 130 |
| July | 47.8°C17 Jul 1936 | 3.3°C9 Jul 1895 | 142 mm20 Jul 1999 | 279 mm1999 · driest 0 mm in 1930 | 129 |
| August | 43.9°C24 Aug 1936 | 1.7°C20 Aug 1950 | 103 mm23 Aug 1906 | 273 mm1906 · driest 4 mm in 1973 | 129 |
| September | 40.6°C5 Sep 1913 | -6.7°C25 Sep 1893 | 104 mm11 Sep 1901 | 279 mm1901 · driest 8 mm in 1999 | 127 |
| October | 36.1°C1 Oct 1963 | -15.0°C28 Oct 1925 | 93 mm7 Oct 2008 | 203 mm2008 · driest 0 mm in 1902 | 124 |
| November | 27.8°C4 Nov 2020 | -27.2°C14 Nov 1959 | 59 mm6 Nov 2000 | 111 mm2001 · driest 0 mm in 2020 | 125 |
| December | 22.2°C6 Dec 1939 | -36.1°C29 Dec 1917 | 36 mm24 Dec 1893 | 75 mm1897 · driest 0 mm in 1983 | 129 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 4 |
| February | 0 | 0 | 26 | <1 | 4 |
| March | <1 | <1 | 23 | 1 | 3 |
| April | 4 | <1 | 11 | 3 | 1 |
| May | 10 | 3 | 1 | 3 | 0 |
| June | 22 | 9 | 0 | 4 | 0 |
| July | 27 | 14 | 0 | 3 | 0 |
| August | 27 | 10 | 0 | 3 | 0 |
| September | 16 | 6 | <1 | 3 | 0 |
| October | 5 | 1 | 8 | 2 | <1 |
| November | <1 | 0 | 22 | 1 | 2 |
| December | 0 | 0 | 29 | <1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 12% | 1% | 7% | -5.3–4.2°C |
| February | 1% | 13% | 3% | 10% | -3.4–6.4°C |
| March | 9% | 17% | 5% | 14% | 2.8–12.6°C |
| April | 30% | 23% | 8% | 26% | 12.8–19.7°C |
| May | 53% | 29% | 11% | 35% | 19.7–25.7°C |
| June | 69% | 28% | 12% | 32% | 25.1–30.9°C |
| July | 79% | 21% | 8% | 18% | 28.1–33.7°C |
| August | 78% | 22% | 9% | 19% | 27.1–32.4°C |
| September | 70% | 19% | 8% | 17% | 22.6–28.0°C |
| October | 43% | 14% | 5% | 11% | 15.6–21.6°C |
| November | 7% | 11% | 3% | 7% | 5.0–12.3°C |
| December | <1% | 11% | 2% | 7% | -2.9–5.2°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