September
September · May · August
United States · 1991–2020
September leads for comfortable weather in Jane Lew: typically 26.4°C by day, 11.7°C at night, with 102 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · August
August · July · June
October · April · September
The weakest month is January, scoring 5 against September’s 73 — days reach only 5.5°C, 18° below the 24°C the score treats as ideal, and nights drop to -5.4°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 | 5.5°C | -5.4°C | 101 mm | 11.8 | 9 h 42 | 5 | Good coverage |
| February | 7.5°C | -4.9°C | 88 mm | 9.1 | 10 h 40 | 5 | Good coverage |
| March | 12.8°C | -1.4°C | 122 mm | 10.7 | 11 h 50 | 14 | Good coverage |
| April | 20.1°C | 3.7°C | 108 mm | 10.4 | 13 h 10 | 50 | Good coverage |
| May | 24.4°C | 8.7°C | 147 mm | 11.5 | 14 h 17 | 64 | Good coverage |
| June | 28.6°C | 14.1°C | 142 mm | 11 | 14 h 54 | 61 | Good coverage |
| July | 30.1°C | 16.5°C | 142 mm | 9.8 | 14 h 40 | 56 | Good coverage |
| August | 29.9°C | 16°C | 110 mm | 8 | 13 h 42 | 64 | Good coverage |
| September | 26.4°C | 11.7°C | 102 mm | 7.5 | 12 h 24 | 73 | Good coverage |
| October | 20.1°C | 5°C | 79 mm | 7.9 | 11 h 06 | 58 | Good coverage |
| November | 13.5°C | 0.1°C | 92 mm | 8.7 | 9 h 59 | 26 | Good coverage |
| December | 7.1°C | -3.6°C | 92 mm | 9.8 | 9 h 26 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 27.8°C30 Jan 1914 | -31.1°C21 Jan 1985 | 50 mm11 Jan 1974 | 256 mm1937 · driest 0 mm in 1901 | 111 |
| February | 28.3°C8 Feb 1900 | -35.0°C10 Feb 1899 | 88 mm9 Feb 1994 | 195 mm1956 · driest 0 mm in 1900 | 113 |
| March | 34.4°C24 Mar 1907 | -21.1°C3 Mar 1980 | 71 mm20 Mar 1963 | 239 mm1963 · driest 0 mm in 1900 | 113 |
| April | 35.6°C22 Apr 1902 | -12.2°C1 Apr 1923 | 69 mm26 Apr 1989 | 214 mm2011 · driest 0 mm in 1901 | 107 |
| May | 36.7°C22 May 1911 | -7.8°C7 May 1974 | 87 mm21 May 1980 | 332 mm1996 · driest 0 mm in 1902 | 109 |
| June | 37.8°C29 Jun 1934 | 0.0°C4 Jun 1910 | 117 mm25 Jun 1950 | 313 mm1998 · driest 0 mm in 1900 | 112 |
| July | 40.6°C25 Jul 1934 | 3.9°C2 Jul 1988 | 119 mm24 Jul 1951 | 288 mm1943 · driest 0 mm in 1900 | 112 |
| August | 40.0°C4 Aug 1930 | 1.7°C29 Aug 1965 | 91 mm16 Aug 1949 | 225 mm1935 · driest 0 mm in 1902 | 109 |
| September | 39.4°C4 Sep 1953 | -2.2°C28 Sep 1909 | 66 mm25 Sep 1940 | 229 mm1945 · driest 0 mm in 1902 | 107 |
| October | 34.4°C1 Oct 1953 | -8.3°C27 Oct 1962 | 80 mm16 Oct 1954 | 200 mm1954 · driest 0 mm in 1900 | 111 |
| November | 30.0°C3 Nov 1946 | -17.8°C30 Nov 1929 | 64 mm25 Nov 1950 | 263 mm1985 · driest 0 mm in 1899 | 114 |
| December | 26.1°C8 Dec 1951 | -28.9°C30 Dec 1917 | 66 mm16 Dec 1948 | 204 mm1956 · driest 0 mm in 1900 | 115 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 24 | 4 | 4 |
| February | <1 | 0 | 22 | 3 | 3 |
| March | 2 | <1 | 19 | 5 | 2 |
| April | 8 | 1 | 7 | 4 | 0 |
| May | 16 | 5 | <1 | 6 | 0 |
| June | 26 | 12 | 0 | 5 | 0 |
| July | 29 | 17 | 0 | 6 | 0 |
| August | 29 | 16 | 0 | 4 | 0 |
| September | 20 | 7 | <1 | 4 | 0 |
| October | 8 | <1 | 5 | 4 | 0 |
| November | 1 | 0 | 16 | 3 | <1 |
| December | 0 | 0 | 23 | 4 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 1% | 45% | 12% | 63% | 1.9–9.9°C |
| February | 3% | 42% | 12% | 59% | 2.7–11.1°C |
| March | 13% | 41% | 13% | 61% | 8.9–16.5°C |
| April | 33% | 40% | 12% | 53% | 16.2–21.8°C |
| May | 53% | 37% | 14% | 52% | 21.5–27.4°C |
| June | 61% | 38% | 15% | 49% | 26.0–30.6°C |
| July | 64% | 36% | 16% | 48% | 28.4–32.5°C |
| August | 70% | 31% | 13% | 35% | 27.7–31.7°C |
| September | 67% | 28% | 12% | 32% | 24.1–29.4°C |
| October | 45% | 29% | 10% | 34% | 17.3–23.1°C |
| November | 14% | 35% | 10% | 47% | 10.6–16.8°C |
| December | 2% | 41% | 11% | 59% | 3.2–10.9°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