September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Rothville: typically 26°C by day, 13°C at night, with 97 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 79 — days reach only 2°C, 22° 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 | 2°C | -8.5°C | 36 mm | 5.4 | 9 h 39 | 5 | Strong coverage |
| February | 5.2°C | -6.1°C | 48 mm | 5.6 | 10 h 38 | 5 | Strong coverage |
| March | 11.9°C | -0.5°C | 71 mm | 7 | 11 h 49 | 24 | Strong coverage |
| April | 18.2°C | 5.5°C | 108 mm | 9.9 | 13 h 11 | 47 | Strong coverage |
| May | 23.1°C | 11.4°C | 129 mm | 9.9 | 14 h 20 | 71 | Strong coverage |
| June | 28.2°C | 16.9°C | 143 mm | 9.2 | 14 h 57 | 62 | Strong coverage |
| July | 30.3°C | 19.1°C | 127 mm | 7.8 | 14 h 43 | 55 | Strong coverage |
| August | 29.8°C | 17.9°C | 105 mm | 7.2 | 13 h 44 | 62 | Strong coverage |
| September | 26°C | 13°C | 97 mm | 6.2 | 12 h 24 | 79 | Strong coverage |
| October | 19.6°C | 6.8°C | 86 mm | 6.8 | 11 h 05 | 60 | Strong coverage |
| November | 11.2°C | 0°C | 65 mm | 6.2 | 9 h 56 | 24 | Strong coverage |
| December | 4.3°C | -5.5°C | 46 mm | 5.5 | 9 h 23 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 23.3°C25 Jan 1950 | -29.4°C10 Jan 1982 | 72 mm2 Jan 1965 | 184 mm1965 · driest 0 mm in 1986 | 75 |
| February | 26.1°C29 Feb 1972 | -27.8°C9 Feb 1979 | 62 mm20 Feb 1997 | 115 mm1942 · driest 1 mm in 1947 | 77 |
| March | 30.0°C29 Mar 1986 | -26.1°C5 Mar 1960 | 58 mm15 Mar 1944 | 182 mm1973 · driest 8 mm in 1956 | 76 |
| April | 33.3°C29 Apr 1952 | -10.6°C3 Apr 1975 | 105 mm21 Apr 1973 | 224 mm1973 · driest 15 mm in 1980 | 76 |
| May | 36.7°C21 May 1956 | -1.7°C3 May 1976 | 117 mm12 May 2002 | 309 mm1996 · driest 26 mm in 2014 | 76 |
| June | 41.1°C25 Jun 1954 | 5.0°C10 Jun 1988 | 139 mm25 Jun 2008 | 357 mm1947 · driest 5 mm in 1959 | 76 |
| July | 46.7°C14 Jul 1954 | 7.8°C31 Jul 1971 | 192 mm15 Jul 1958 | 470 mm1958 · driest 14 mm in 1975 | 76 |
| August | 42.2°C1 Aug 1980 | 6.1°C28 Aug 1986 | 148 mm2 Aug 1978 | 278 mm2004 · driest 1 mm in 2013 | 75 |
| September | 42.8°C9 Sep 1947 | -2.8°C28 Sep 1942 | 114 mm16 Sep 1965 | 342 mm1961 · driest 5 mm in 2016 | 76 |
| October | 35.0°C10 Oct 1963 | -8.9°C26 Oct 1942 | 150 mm23 Oct 1957 | 338 mm1941 · driest 0 mm in 1950 | 75 |
| November | 28.3°C1 Nov 1944 | -21.7°C30 Nov 1964 | 83 mm1 Nov 1984 | 201 mm1992 · driest 2 mm in 1959 | 76 |
| December | 22.2°C12 Dec 1949 | -31.1°C23 Dec 1989 | 86 mm10 Dec 2003 | 176 mm1982 · driest 2 mm in 1996 | 75 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | 1 | 3 |
| February | 0 | 0 | 24 | 2 | 3 |
| March | 1 | 0 | 17 | 2 | 1 |
| April | 5 | <1 | 5 | 4 | <1 |
| May | 12 | 3 | <1 | 4 | 0 |
| June | 24 | 12 | 0 | 4 | 0 |
| July | 29 | 17 | 0 | 4 | 0 |
| August | 29 | 15 | 0 | 3 | 0 |
| September | 18 | 7 | <1 | 3 | 0 |
| October | 7 | <1 | 4 | 3 | 0 |
| November | <1 | 0 | 16 | 2 | <1 |
| December | 0 | 0 | 26 | 2 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 16% | 4% | 11% | -1.3–6.3°C |
| February | 2% | 18% | 4% | 13% | 1.2–10.2°C |
| March | 15% | 24% | 8% | 28% | 8.1–15.6°C |
| April | 36% | 30% | 11% | 40% | 16.1–21.7°C |
| May | 58% | 31% | 13% | 39% | 22.0–26.8°C |
| June | 69% | 31% | 13% | 37% | 26.9–31.4°C |
| July | 76% | 24% | 11% | 22% | 29.2–33.7°C |
| August | 77% | 23% | 10% | 23% | 28.4–33.1°C |
| September | 74% | 22% | 11% | 22% | 24.3–29.5°C |
| October | 48% | 22% | 9% | 23% | 18.1–23.2°C |
| November | 12% | 19% | 7% | 15% | 8.0–15.5°C |
| December | <1% | 18% | 5% | 14% | 1.4–7.9°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