September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Alvaton: typically 28°C by day, 15.1°C at night, with 90 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
August · July · June
October · April · November
The weakest month is January, scoring 5 against September’s 75 — days reach only 7.6°C, 16° 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 | 7.6°C | -2.5°C | 93 mm | 8.3 | 9 h 53 | 5 | Strong coverage |
| February | 10.3°C | -0.8°C | 107 mm | 8.4 | 10 h 47 | 11 | Strong coverage |
| March | 15.4°C | 3.2°C | 109 mm | 9.4 | 11 h 51 | 34 | Strong coverage |
| April | 21.3°C | 8.2°C | 123 mm | 9.9 | 13 h 05 | 60 | Strong coverage |
| May | 25.7°C | 13.6°C | 128 mm | 9.5 | 14 h 07 | 73 | Strong coverage |
| June | 30°C | 18.3°C | 110 mm | 8.8 | 14 h 40 | 58 | Strong coverage |
| July | 31.8°C | 20.5°C | 110 mm | 9.3 | 14 h 27 | 48 | Strong coverage |
| August | 31.5°C | 19.4°C | 102 mm | 7 | 13 h 34 | 54 | Strong coverage |
| September | 28°C | 15.1°C | 90 mm | 6.8 | 12 h 22 | 75 | Strong coverage |
| October | 21.9°C | 8.5°C | 95 mm | 7.1 | 11 h 11 | 69 | Strong coverage |
| November | 14.8°C | 2.7°C | 93 mm | 7.8 | 10 h 09 | 35 | Strong coverage |
| December | 9.4°C | -0.6°C | 111 mm | 9.3 | 9 h 39 | 7 | 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 | 25.6°C24 Jan 1943 | -29.4°C23 Jan 1963 | 121 mm29 Jan 1956 | 526 mm1937 · driest 18 mm in 1893 | 134 |
| February | 27.8°C13 Feb 1962 | -28.9°C2 Feb 1951 | 130 mm28 Feb 2021 | 286 mm1989 · driest 3 mm in 1947 | 132 |
| March | 33.3°C24 Mar 1929 | -21.1°C5 Mar 1960 | 151 mm12 Mar 1975 | 370 mm1975 · driest 19 mm in 1918 | 132 |
| April | 35.6°C24 Apr 1925 | -7.2°C1 Apr 1923 | 135 mm16 Apr 1998 | 294 mm2025 · driest 24 mm in 1976 | 133 |
| May | 37.8°C29 May 1911 | -1.1°C1 May 1963 | 125 mm2 May 2010 | 337 mm1983 · driest 14 mm in 1926 | 132 |
| June | 43.3°C29 Jun 2012 | 3.9°C13 Jun 1903 | 145 mm23 Jun 1969 | 333 mm1928 · driest 3 mm in 1936 | 132 |
| July | 45.0°C28 Jul 1930 | 7.8°C23 Jul 1947 | 128 mm6 Jul 1920 | 283 mm2016 · driest 4 mm in 1901 | 133 |
| August | 43.3°C9 Aug 1930 | 5.6°C31 Aug 1946 | 90 mm5 Aug 1975 | 288 mm2014 · driest 18 mm in 1924 | 132 |
| September | 40.6°C7 Sep 1925 | 0.6°C24 Sep 1983 | 153 mm13 Sep 1979 | 298 mm1979 · driest 1 mm in 1956 | 132 |
| October | 36.7°C2 Oct 2019 | -7.2°C30 Oct 1925 | 101 mm5 Oct 1995 | 213 mm2007 · driest 1 mm in 1924 | 132 |
| November | 31.1°C13 Nov 1909 | -21.7°C25 Nov 1950 | 131 mm24 Nov 1900 | 278 mm1900 · driest 8 mm in 1912 | 132 |
| December | 25.6°C3 Dec 1982 | -25.6°C22 Dec 1989 | 156 mm7 Dec 1924 | 335 mm1978 · driest 22 mm in 1925 | 132 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 21 | 3 | 3 |
| February | <1 | 0 | 17 | 4 | 2 |
| March | 3 | 0 | 10 | 4 | <1 |
| April | 9 | <1 | 2 | 4 | 0 |
| May | 19 | 6 | 0 | 4 | 0 |
| June | 28 | 18 | 0 | 4 | 0 |
| July | 31 | 24 | 0 | 4 | 0 |
| August | 30 | 23 | 0 | 3 | 0 |
| September | 23 | 11 | 0 | 3 | 0 |
| October | 10 | 2 | 2 | 3 | 0 |
| November | 1 | 0 | 11 | 3 | <1 |
| December | 0 | 0 | 18 | 4 | <1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 80); on 2011–2025 it is May (80). 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% | 30% | 12% | 34% | 4.0–11.3°C |
| February | 5% | 31% | 13% | 36% | 5.7–13.0°C |
| March | 20% | 32% | 14% | 39% | 11.6–19.5°C |
| April | 43% | 32% | 13% | 39% | 18.4–23.7°C |
| May | 62% | 31% | 14% | 36% | 23.6–28.5°C |
| June | 72% | 28% | 12% | 30% | 28.5–32.9°C |
| July | 73% | 27% | 12% | 28% | 30.2–34.5°C |
| August | 76% | 24% | 10% | 23% | 29.5–33.9°C |
| September | 76% | 22% | 9% | 19% | 25.9–31.3°C |
| October | 58% | 20% | 8% | 19% | 19.9–25.0°C |
| November | 18% | 25% | 11% | 26% | 12.2–17.6°C |
| December | 2% | 29% | 13% | 34% | 5.5–12.2°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