September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Minneapolis: typically 28.5°C by day, 14.2°C at night, with 68 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
September · June · August
October · April · March
The weakest month is January, scoring 5 against September’s 77 — days reach only 5.2°C, 19° below the 24°C the score treats as ideal, and nights drop to -6.8°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 | 5.2°C | -6.8°C | 22 mm | 3.4 | 9 h 42 | 5 | Strong coverage |
| February | 8.1°C | -5°C | 29 mm | 4 | 10 h 40 | 10 | Strong coverage |
| March | 14.5°C | 0.2°C | 49 mm | 5.6 | 11 h 50 | 38 | Strong coverage |
| April | 20.2°C | 5.6°C | 63 mm | 6.5 | 13 h 10 | 63 | Strong coverage |
| May | 25.3°C | 11.7°C | 132 mm | 8.9 | 14 h 17 | 71 | Strong coverage |
| June | 31.3°C | 17.5°C | 101 mm | 7.4 | 14 h 54 | 58 | Strong coverage |
| July | 34.3°C | 20.2°C | 112 mm | 8.2 | 14 h 40 | 41 | Strong coverage |
| August | 32.9°C | 19°C | 107 mm | 7.7 | 13 h 42 | 49 | Strong coverage |
| September | 28.5°C | 14.2°C | 68 mm | 5.6 | 12 h 24 | 77 | Strong coverage |
| October | 21.2°C | 7°C | 61 mm | 5 | 11 h 06 | 71 | Strong coverage |
| November | 13°C | -0.1°C | 32 mm | 4.2 | 9 h 59 | 36 | Strong coverage |
| December | 6.3°C | -5.2°C | 33 mm | 3.9 | 9 h 26 | 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 | 26.7°C31 Jan 1989 | -30.0°C8 Jan 1913 | 42 mm31 Jan 1999 | 70 mm1949 · driest 0 mm in 1950 | 132 |
| February | 30.6°C29 Feb 1972 | -33.9°C12 Feb 1899 | 64 mm6 Feb 1928 | 128 mm1911 · driest 0 mm in 1904 | 132 |
| March | 36.1°C22 Mar 2026 | -25.0°C11 Mar 1948 | 74 mm30 Mar 1998 | 218 mm1973 · driest 0 mm in 1910 | 132 |
| April | 38.3°C23 Apr 1989 | -13.3°C5 Apr 1920 | 88 mm25 Apr 2015 | 165 mm1944 · driest 3 mm in 1989 | 132 |
| May | 40.0°C31 May 1934 | -6.1°C1 May 1909 | 112 mm27 May 1953 | 305 mm2019 · driest 3 mm in 1966 | 132 |
| June | 45.0°C30 Jun 1980 | 4.4°C3 Jun 1946 | 113 mm21 Jun 1951 | 377 mm1951 · driest 7 mm in 1952 | 132 |
| July | 47.2°C24 Jul 1936 | 8.9°C3 Jul 1924 | 140 mm26 Jul 1990 | 424 mm1993 · driest 1 mm in 1974 | 132 |
| August | 48.3°C13 Aug 1936 | 5.0°C29 Aug 1893 | 136 mm21 Aug 1966 | 233 mm1977 · driest 0 mm in 1971 | 130 |
| September | 46.1°C3 Sep 1947 | -2.2°C29 Sep 1916 | 161 mm3 Sep 1942 | 413 mm1967 · driest 0 mm in 1956 | 131 |
| October | 38.9°C5 Oct 1947 | -12.2°C30 Oct 1917 | 97 mm11 Oct 1973 | 191 mm2018 · driest 0 mm in 1999 | 131 |
| November | 30.6°C8 Nov 2006 | -20.0°C22 Nov 1929 | 62 mm2 Nov 1998 | 162 mm1909 · driest 0 mm in 1989 | 128 |
| December | 27.8°C6 Dec 1939 | -31.1°C22 Dec 1989 | 54 mm11 Dec 2007 | 93 mm1913 · driest 0 mm in 1976 | 128 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | 3 |
| February | <1 | 0 | 23 | <1 | 3 |
| March | 3 | <1 | 16 | 2 | 2 |
| April | 8 | 2 | 5 | 2 | <1 |
| May | 18 | 7 | <1 | 4 | 0 |
| June | 28 | 20 | 0 | 3 | 0 |
| July | 30 | 27 | 0 | 3 | 0 |
| August | 30 | 24 | 0 | 3 | 0 |
| September | 23 | 13 | 0 | 2 | 0 |
| October | 10 | 3 | 4 | 2 | <1 |
| November | 1 | 0 | 16 | <1 | 1 |
| December | 0 | 0 | 28 | 1 | 3 |
The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 78); on 2011–2025 it is September (77). 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 | 1% | 10% | 1% | 5% | 0.4–9.0°C |
| February | 7% | 12% | 3% | 7% | 2.3–12.5°C |
| March | 24% | 16% | 4% | 12% | 9.4–18.1°C |
| April | 48% | 21% | 7% | 21% | 17.5–22.8°C |
| May | 63% | 27% | 12% | 31% | 22.4–27.8°C |
| June | 74% | 26% | 11% | 26% | 28.3–33.9°C |
| July | 78% | 22% | 9% | 21% | 31.3–37.7°C |
| August | 79% | 21% | 9% | 19% | 30.6–36.3°C |
| September | 78% | 19% | 8% | 16% | 25.9–31.6°C |
| October | 60% | 15% | 5% | 12% | 18.6–24.9°C |
| November | 16% | 12% | 3% | 8% | 9.9–15.9°C |
| December | 1% | 10% | 2% | 5% | 2.7–9.6°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