September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Hopkins: typically 28.6°C by day, 13°C at night, with 29 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
September · June · August
April · October · May
The weakest month is January, scoring 13 against September’s 81 — days reach only 8.7°C, 15° below the 24°C the score treats as ideal, and nights drop to -5.6°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 | 8.7°C | -5.6°C | 10 mm | 1.7 | 9 h 54 | 13 | Strong coverage |
| February | 10.8°C | -4.6°C | 7 mm | 1.8 | 10 h 47 | 21 | Strong coverage |
| March | 15.8°C | -0.2°C | 24 mm | 3.1 | 11 h 51 | 45 | Strong coverage |
| April | 20.4°C | 4.3°C | 33 mm | 4.3 | 13 h 05 | 68 | Strong coverage |
| May | 26.1°C | 10.1°C | 54 mm | 5.4 | 14 h 07 | 79 | Strong coverage |
| June | 31.9°C | 16°C | 65 mm | 5.9 | 14 h 40 | 65 | Strong coverage |
| July | 34.1°C | 18.6°C | 71 mm | 6 | 14 h 27 | 52 | Strong coverage |
| August | 32.7°C | 17.6°C | 74 mm | 6.1 | 13 h 34 | 58 | Strong coverage |
| September | 28.6°C | 13°C | 29 mm | 3.5 | 12 h 22 | 81 | Strong coverage |
| October | 21.8°C | 5.8°C | 40 mm | 3.2 | 11 h 11 | 75 | Strong coverage |
| November | 14.6°C | -0.2°C | 12 mm | 2.1 | 10 h 09 | 42 | Strong coverage |
| December | 8.9°C | -4.8°C | 19 mm | 2.5 | 9 h 39 | 14 | 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 | 28.3°C30 Jan 1986 | -30.0°C19 Jan 1984 | 35 mm26 Jan 1944 | 50 mm1944 · driest 0 mm in 1986 | 119 |
| February | 30.6°C1 Feb 1963 | -27.8°C13 Feb 1905 | 51 mm25 Feb 1903 | 104 mm1903 · driest 0 mm in 1974 | 118 |
| March | 37.2°C27 Mar 2026 | -27.8°C7 Mar 1920 | 64 mm19 Mar 1982 | 127 mm1957 · driest 0 mm in 1997 | 118 |
| April | 35.6°C24 Apr 2006 | -13.3°C4 Apr 1920 | 72 mm20 Apr 1942 | 179 mm1942 · driest 0 mm in 1935 | 120 |
| May | 40.0°C20 May 1956 | -6.1°C4 May 1979 | 118 mm2 May 1979 | 212 mm1979 · driest 1 mm in 2013 | 118 |
| June | 43.3°C27 Jun 1980 | 0.6°C2 Jun 1919 | 150 mm27 Jun 2004 | 259 mm2004 · driest 2 mm in 1953 | 120 |
| July | 43.3°C31 Jul 1934 | 7.2°C4 Jul 1903 | 116 mm10 Jul 2015 | 251 mm1927 · driest 3 mm in 1933 | 120 |
| August | 42.2°C14 Aug 1982 | 6.1°C30 Aug 1915 | 172 mm24 Aug 1972 | 197 mm1996 · driest 0 mm in 1938 | 120 |
| September | 40.6°C5 Sep 2000 | -3.9°C30 Sep 1985 | 155 mm15 Sep 1923 | 183 mm1923 · driest 0 mm in 1980 | 118 |
| October | 36.1°C17 Oct 2016 | -14.4°C29 Oct 1917 | 78 mm7 Oct 1946 | 191 mm1930 · driest 0 mm in 1922 | 118 |
| November | 32.8°C9 Nov 1980 | -21.7°C28 Nov 1976 | 46 mm22 Nov 1905 | 117 mm2024 · driest 0 mm in 1901 | 117 |
| December | 29.4°C6 Dec 1939 | -27.8°C21 Dec 1916 | 70 mm20 Dec 1911 | 130 mm2006 · driest 0 mm in 1957 | 116 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | <1 | 0 | 28 | <1 | 2 |
| February | <1 | 0 | 24 | <1 | 2 |
| March | 4 | <1 | 17 | <1 | 1 |
| April | 9 | 2 | 5 | 1 | <1 |
| May | 20 | 10 | <1 | 2 | 0 |
| June | 27 | 21 | 0 | 2 | 0 |
| July | 30 | 27 | 0 | 2 | 0 |
| August | 30 | 24 | 0 | 3 | 0 |
| September | 24 | 14 | <1 | <1 | 0 |
| October | 12 | 4 | 3 | 1 | <1 |
| November | 3 | <1 | 16 | <1 | <1 |
| December | <1 | 0 | 27 | <1 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 6% | 6% | <1% | 2% | 4.7–12.5°C |
| February | 15% | 8% | 1% | 4% | 7.1–15.2°C |
| March | 33% | 11% | 3% | 6% | 12.3–19.6°C |
| April | 57% | 14% | 4% | 11% | 17.9–24.0°C |
| May | 71% | 20% | 7% | 19% | 23.4–28.7°C |
| June | 80% | 19% | 7% | 16% | 28.7–34.1°C |
| July | 80% | 20% | 8% | 17% | 32.1–36.3°C |
| August | 83% | 17% | 6% | 13% | 31.2–35.3°C |
| September | 83% | 13% | 4% | 9% | 26.6–31.9°C |
| October | 67% | 10% | 3% | 6% | 19.9–25.6°C |
| November | 28% | 7% | 2% | 2% | 11.9–18.1°C |
| December | 8% | 7% | 1% | 2% | 6.1–13.0°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