September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Midway: typically 25.4°C by day, 14.1°C at night, with 105 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
July · August · June
October · April · May
The weakest month is January, scoring 5 against September’s 80 — days reach only 8.9°C, 15° below the 24°C the score treats as ideal, and nights drop to -2.2°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 | 8.9°C | -2.2°C | 105 mm | 7.9 | 10 h 00 | 5 | Strong coverage |
| February | 11.1°C | -0.7°C | 88 mm | 7.8 | 10 h 51 | 17 | Strong coverage |
| March | 15°C | 2.5°C | 97 mm | 9.2 | 11 h 52 | 33 | Strong coverage |
| April | 20.3°C | 6.7°C | 106 mm | 8.7 | 13 h 02 | 58 | Strong coverage |
| May | 24.1°C | 11.5°C | 105 mm | 9 | 14 h 01 | 78 | Strong coverage |
| June | 27.5°C | 15.8°C | 122 mm | 10.2 | 14 h 32 | 68 | Strong coverage |
| July | 29.1°C | 18°C | 119 mm | 10.5 | 14 h 20 | 59 | Strong coverage |
| August | 28.4°C | 17.5°C | 128 mm | 10.6 | 13 h 29 | 61 | Strong coverage |
| September | 25.4°C | 14.1°C | 105 mm | 7.5 | 12 h 21 | 80 | Strong coverage |
| October | 20.4°C | 7.6°C | 86 mm | 5.7 | 11 h 14 | 65 | Strong coverage |
| November | 14.8°C | 2°C | 95 mm | 6.8 | 10 h 15 | 34 | Strong coverage |
| December | 10.3°C | -0.7°C | 106 mm | 7.9 | 9 h 46 | 12 | 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 | 26.7°C27 Jan 1999 | -26.7°C21 Jan 1985 | 112 mm7 Jan 1998 | 253 mm1998 · driest 11 mm in 1981 | 71 |
| February | 26.1°C15 Feb 2018 | -18.9°C25 Feb 1967 | 85 mm16 Feb 1990 | 205 mm1990 · driest 11 mm in 1978 | 71 |
| March | 29.4°C27 Mar 2020 | -16.7°C15 Mar 1993 | 106 mm12 Mar 1968 | 251 mm1975 · driest 20 mm in 1985 | 71 |
| April | 31.7°C15 Apr 1972 | -6.7°C7 Apr 2007 | 134 mm19 Apr 2019 | 228 mm2019 · driest 7 mm in 1976 | 71 |
| May | 33.9°C23 May 1953 | -2.8°C10 May 1947 | 112 mm27 May 1973 | 373 mm2018 · driest 13 mm in 1951 | 71 |
| June | 37.2°C25 Jun 1952 | 1.7°C2 Jun 1966 | 101 mm26 Jun 1997 | 273 mm1989 · driest 22 mm in 2008 | 71 |
| July | 38.3°C28 Jul 1952 | 6.7°C2 Jul 1988 | 102 mm27 Jul 1969 | 348 mm2013 · driest 12 mm in 1986 | 71 |
| August | 37.8°C21 Aug 1983 | 5.6°C29 Aug 1986 | 110 mm21 Aug 1990 | 287 mm1967 · driest 13 mm in 1981 | 70 |
| September | 36.7°C7 Sep 1947 | -2.2°C28 Sep 1947 | 147 mm26 Sep 2024 | 455 mm2024 · driest 4 mm in 1984 | 71 |
| October | 32.8°C2 Oct 2019 | -8.9°C22 Oct 1952 | 132 mm4 Oct 1964 | 246 mm2017 · driest 0 mm in 2000 | 71 |
| November | 27.8°C9 Nov 2023 | -18.9°C26 Nov 1950 | 104 mm30 Nov 2010 | 252 mm1948 · driest 17 mm in 2025 | 71 |
| December | 27.2°C31 Dec 1951 | -21.7°C25 Dec 1983 | 106 mm28 Dec 2018 | 276 mm2018 · driest 4 mm in 1965 | 71 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 22 | 3 | 2 |
| February | <1 | 0 | 18 | 3 | 2 |
| March | 1 | 0 | 11 | 3 | 1 |
| April | 7 | <1 | 2 | 4 | <1 |
| May | 16 | 2 | <1 | 3 | 0 |
| June | 25 | 8 | 0 | 4 | 0 |
| July | 29 | 14 | 0 | 4 | 0 |
| August | 28 | 10 | 0 | 4 | 0 |
| September | 18 | 3 | 0 | 3 | 0 |
| October | 5 | <1 | 2 | 3 | 0 |
| November | <1 | 0 | 13 | 3 | <1 |
| December | 0 | 0 | 19 | 3 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 3% | 26% | 10% | 31% | 5.7–12.3°C |
| February | 6% | 27% | 10% | 30% | 7.9–13.8°C |
| March | 20% | 30% | 11% | 34% | 12.1–18.1°C |
| April | 46% | 26% | 10% | 30% | 18.2–22.3°C |
| May | 61% | 30% | 11% | 37% | 22.2–26.0°C |
| June | 67% | 32% | 12% | 41% | 25.7–29.6°C |
| July | 66% | 34% | 13% | 44% | 27.4–31.1°C |
| August | 67% | 33% | 12% | 41% | 26.7–29.9°C |
| September | 70% | 25% | 10% | 28% | 23.8–26.9°C |
| October | 50% | 20% | 8% | 21% | 18.6–22.1°C |
| November | 16% | 23% | 10% | 23% | 12.5–17.5°C |
| December | 4% | 25% | 10% | 27% | 7.7–13.0°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