September
September · June · May
United States · 1991–2020
September leads for comfortable weather in Champlin: typically 25.1°C by day, 12.6°C at night, with 82 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · May
July · August · June
October · May · September
The weakest month is January, scoring 5 against September’s 82 — days reach only -0.2°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 | -0.2°C | -8.6°C | 54 mm | 6.9 | 9 h 33 | 5 | Strong coverage |
| February | 2.4°C | -6.8°C | 43 mm | 5.8 | 10 h 35 | 5 | Strong coverage |
| March | 9.3°C | -1.5°C | 66 mm | 8 | 11 h 49 | 13 | Strong coverage |
| April | 17°C | 4.6°C | 86 mm | 9.6 | 13 h 14 | 45 | Strong coverage |
| May | 22.7°C | 10.7°C | 108 mm | 10.1 | 14 h 26 | 71 | Strong coverage |
| June | 27.3°C | 16.3°C | 99 mm | 8.7 | 15 h 05 | 73 | Strong coverage |
| July | 28.6°C | 18.2°C | 107 mm | 7.6 | 14 h 49 | 65 | Strong coverage |
| August | 28°C | 17.3°C | 98 mm | 7.6 | 13 h 48 | 70 | Strong coverage |
| September | 25.1°C | 12.6°C | 82 mm | 6.6 | 12 h 25 | 82 | Strong coverage |
| October | 18.2°C | 6.3°C | 80 mm | 7.2 | 11 h 03 | 55 | Strong coverage |
| November | 9.9°C | 0.1°C | 66 mm | 7.5 | 9 h 51 | 18 | Strong coverage |
| December | 2.6°C | -5.5°C | 56 mm | 7.5 | 9 h 16 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.6°C23 Jan 1909 | -31.1°C15 Jan 1927 | 86 mm8 Jan 2008 | 161 mm1916 · driest 0 mm in 1984 | 114 |
| February | 22.8°C18 Feb 2017 | -30.6°C13 Feb 1905 | 65 mm6 Feb 1942 | 115 mm1942 · driest 1 mm in 1987 | 114 |
| March | 30.0°C30 Mar 1986 | -25.6°C8 Mar 1943 | 97 mm12 Mar 1923 | 203 mm2007 · driest 5 mm in 1910 | 114 |
| April | 35.6°C27 Apr 1986 | -11.7°C7 Apr 1982 | 69 mm27 Apr 1943 | 256 mm1957 · driest 9 mm in 1971 | 114 |
| May | 38.9°C31 May 1934 | -4.4°C10 May 1966 | 121 mm11 May 1962 | 255 mm1995 · driest 12 mm in 1934 | 115 |
| June | 40.6°C27 Jun 1934 | 3.3°C5 Jun 1945 | 144 mm17 Jun 1973 | 295 mm1973 · driest 7 mm in 1988 | 114 |
| July | 42.2°C14 Jul 1936 | 5.6°C17 Jul 1985 | 111 mm18 Jul 2007 | 225 mm1958 · driest 7 mm in 1940 | 113 |
| August | 40.0°C5 Aug 1918 | 4.4°C31 Aug 1915 | 142 mm3 Aug 1943 | 220 mm1977 · driest 8 mm in 1984 | 114 |
| September | 39.4°C4 Sep 1925 | -3.3°C28 Sep 1942 | 108 mm26 Sep 1933 | 301 mm1961 · driest 1 mm in 1979 | 114 |
| October | 34.4°C2 Oct 1922 | -12.8°C30 Oct 1925 | 75 mm23 Oct 1957 | 294 mm1941 · driest 2 mm in 1964 | 114 |
| November | 27.8°C7 Nov 1915 | -20.6°C28 Nov 1930 | 112 mm28 Nov 1990 | 208 mm1985 · driest 2 mm in 1904 | 114 |
| December | 21.7°C4 Dec 2012 | -30.6°C28 Dec 1924 | 140 mm3 Dec 1982 | 182 mm1982 · driest 8 mm in 1995 | 114 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | 2 | 5 |
| February | 0 | 0 | 25 | 1 | 4 |
| March | <1 | 0 | 19 | 2 | 2 |
| April | 4 | <1 | 5 | 3 | <1 |
| May | 12 | 4 | <1 | 4 | 0 |
| June | 23 | 10 | 0 | 3 | 0 |
| July | 26 | 11 | 0 | 3 | 0 |
| August | 26 | 9 | 0 | 3 | 0 |
| September | 16 | 5 | <1 | 3 | 0 |
| October | 5 | <1 | 3 | 3 | 0 |
| November | <1 | 0 | 15 | 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% | 21% | 5% | 19% | -3.6–4.6°C |
| February | <1% | 21% | 4% | 17% | -1.5–6.0°C |
| March | 7% | 26% | 7% | 30% | 5.7–13.3°C |
| April | 25% | 32% | 11% | 40% | 14.1–19.8°C |
| May | 52% | 31% | 11% | 39% | 20.2–25.9°C |
| June | 70% | 28% | 10% | 30% | 25.6–30.4°C |
| July | 77% | 23% | 10% | 22% | 27.6–33.0°C |
| August | 77% | 22% | 8% | 21% | 26.7–31.4°C |
| September | 69% | 23% | 9% | 22% | 23.3–28.2°C |
| October | 38% | 21% | 7% | 23% | 16.5–22.0°C |
| November | 6% | 23% | 7% | 22% | 7.0–13.2°C |
| December | <1% | 22% | 6% | 21% | -1.0–6.2°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