September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Hopkins: typically 25.1°C by day, 12°C at night, with 89 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
July · August · June
October · September · May
The weakest month is January, scoring 5 against September’s 80 — days reach only 0.1°C, 24° 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 | 0.1°C | -10.8°C | 24 mm | 4.2 | 9 h 34 | 5 | Strong coverage |
| February | 3.2°C | -8.3°C | 38 mm | 5.6 | 10 h 35 | 5 | Strong coverage |
| March | 10.4°C | -2.1°C | 61 mm | 6.9 | 11 h 49 | 17 | Strong coverage |
| April | 16.9°C | 3.6°C | 98 mm | 9.2 | 13 h 14 | 42 | Strong coverage |
| May | 22.6°C | 10.1°C | 134 mm | 10.2 | 14 h 25 | 66 | Strong coverage |
| June | 27.6°C | 16°C | 141 mm | 8.7 | 15 h 03 | 66 | Strong coverage |
| July | 29.8°C | 18.3°C | 129 mm | 8.3 | 14 h 48 | 57 | Strong coverage |
| August | 29.1°C | 17.2°C | 127 mm | 7.9 | 13 h 47 | 62 | Strong coverage |
| September | 25.1°C | 12°C | 89 mm | 6.4 | 12 h 25 | 80 | Strong coverage |
| October | 18.4°C | 5.1°C | 75 mm | 6.3 | 11 h 03 | 55 | Strong coverage |
| November | 10.1°C | -1.5°C | 56 mm | 5.4 | 9 h 52 | 19 | Strong coverage |
| December | 2.6°C | -7.6°C | 42 mm | 5 | 9 h 17 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.0°C31 Jan 1989 | -35.6°C12 Jan 1974 | 52 mm12 Jan 1960 | 112 mm1960 · driest 0 mm in 1954 | 101 |
| February | 24.4°C28 Feb 1972 | -36.7°C3 Feb 1996 | 50 mm18 Feb 1955 | 122 mm1911 · driest 0 mm in 2004 | 102 |
| March | 32.2°C22 Mar 1910 | -31.1°C12 Mar 1998 | 77 mm30 Mar 2012 | 188 mm1946 · driest 1 mm in 1910 | 102 |
| April | 34.4°C27 Apr 1956 | -17.2°C4 Apr 1899 | 118 mm18 Apr 2013 | 197 mm1976 · driest 10 mm in 1949 | 101 |
| May | 36.1°C28 May 2018 | -7.2°C2 May 1908 | 87 mm7 May 2007 | 271 mm1982 · driest 16 mm in 1914 | 102 |
| June | 38.9°C19 Jun 1956 | 2.8°C11 Jun 1913 | 135 mm30 Jun 1959 | 311 mm2008 · driest 5 mm in 1988 | 100 |
| July | 43.3°C5 Jul 1911 | 4.4°C30 Jul 1971 | 146 mm25 Jul 1979 | 433 mm1993 · driest 3 mm in 1954 | 102 |
| August | 42.2°C4 Aug 1918 | 2.8°C26 Aug 1910 | 127 mm9 Aug 1977 | 354 mm1977 · driest 18 mm in 1967 | 103 |
| September | 41.7°C5 Sep 1913 | -5.6°C29 Sep 1899 | 128 mm14 Sep 1914 | 287 mm1914 · driest 10 mm in 2005 | 103 |
| October | 34.4°C4 Oct 1997 | -12.2°C30 Oct 1917 | 140 mm11 Oct 1973 | 279 mm1977 · driest 0 mm in 1952 | 103 |
| November | 27.2°C14 Nov 1999 | -23.9°C30 Nov 1964 | 129 mm17 Nov 1952 | 136 mm1992 · driest 0 mm in 1921 | 102 |
| December | 21.1°C27 Dec 1946 | -34.4°C10 Dec 1919 | 66 mm14 Dec 2015 | 144 mm2015 · driest 0 mm in 1946 | 101 |
| 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 | 1 | 4 |
| March | <1 | 0 | 19 | 2 | 2 |
| April | 4 | <1 | 7 | 3 | <1 |
| May | 12 | 2 | <1 | 4 | 0 |
| June | 23 | 10 | 0 | 4 | 0 |
| July | 28 | 15 | 0 | 4 | 0 |
| August | 26 | 13 | 0 | 3 | 0 |
| September | 17 | 5 | <1 | 3 | 0 |
| October | 5 | <1 | 6 | 3 | 0 |
| November | <1 | 0 | 17 | 2 | <1 |
| December | 0 | 0 | 27 | 1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 13% | 2% | 6% | -3.3–4.8°C |
| February | <1% | 15% | 3% | 10% | -1.3–7.6°C |
| March | 12% | 19% | 6% | 17% | 5.5–14.2°C |
| April | 31% | 26% | 10% | 29% | 14.6–20.3°C |
| May | 54% | 30% | 13% | 36% | 20.6–26.0°C |
| June | 70% | 28% | 13% | 31% | 25.3–30.6°C |
| July | 77% | 22% | 10% | 20% | 28.2–33.3°C |
| August | 76% | 24% | 11% | 24% | 27.4–32.6°C |
| September | 70% | 22% | 10% | 20% | 23.1–27.9°C |
| October | 45% | 19% | 7% | 18% | 16.5–22.2°C |
| November | 8% | 16% | 6% | 11% | 6.9–13.8°C |
| December | <1% | 13% | 3% | 7% | -1.2–6.1°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