May
May · June · September
United States · 1991–2020
May leads for comfortable weather in Willowcreek: typically 22.8°C by day, 7.1°C at night, with 36 mm of rain. Based on measured 1991–2020 NOAA station history.
May · June · September
June · July · August
May · October · April
The weakest month is January, scoring 5 against May’s 80 — days reach only 2.1°C, 22° 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 | 2.1°C | -5.9°C | 25 mm | 4.8 | 9 h 13 | 5 | Good coverage |
| February | 6.6°C | -4°C | 20 mm | 3.8 | 10 h 23 | 8 | Good coverage |
| March | 12.9°C | -0.6°C | 24 mm | 4.7 | 11 h 47 | 34 | Good coverage |
| April | 16.8°C | 2.2°C | 22 mm | 4.3 | 13 h 23 | 52 | Good coverage |
| May | 22.8°C | 7.1°C | 36 mm | 5.2 | 14 h 44 | 80 | Good coverage |
| June | 27.5°C | 10.8°C | 19 mm | 3.4 | 15 h 29 | 80 | Good coverage |
| July | 33.9°C | 14.5°C | 8 mm | 1.5 | 15 h 11 | 66 | Good coverage |
| August | 32.7°C | 12.6°C | 5 mm | 1.1 | 14 h 01 | 67 | Good coverage |
| September | 26.7°C | 7.3°C | 9 mm | 1.4 | 12 h 27 | 77 | Good coverage |
| October | 17.6°C | 2°C | 19 mm | 3.4 | 10 h 55 | 55 | Good coverage |
| November | 7.5°C | -3.1°C | 24 mm | 4.8 | 9 h 34 | 11 | Good coverage |
| December | 2.3°C | -6.1°C | 35 mm | 5.6 | 8 h 53 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.3°C5 Jan 1909 | -33.3°C23 Jan 1962 | 44 mm14 Jan 1905 | 84 mm1905 · driest 0 mm in 2007 | 109 |
| February | 19.4°C25 Feb 1995 | -30.6°C7 Feb 1989 | 33 mm8 Feb 1953 | 57 mm1953 · driest 0 mm in 2009 | 108 |
| March | 27.8°C31 Mar 1911 | -22.2°C17 Mar 1906 | 21 mm26 Mar 1945 | 67 mm2011 · driest 0 mm in 1925 | 107 |
| April | 33.9°C25 Apr 1910 | -10.0°C5 Apr 1895 | 39 mm26 Apr 1978 | 103 mm1978 · driest 0 mm in 2008 | 106 |
| May | 38.9°C30 May 1986 | -6.7°C11 May 1916 | 40 mm28 May 1964 | 142 mm1998 · driest 0 mm in 1928 | 107 |
| June | 43.9°C17 Jun 1916 | -6.7°C16 Jun 1949 | 35 mm15 Jun 1989 | 86 mm1913 · driest 0 mm in 2008 | 110 |
| July | 43.9°C1 Jul 2013 | -1.1°C13 Jul 1909 | 28 mm13 Jul 1995 | 50 mm1913 · driest 0 mm in 1924 | 110 |
| August | 44.4°C7 Aug 1920 | -1.1°C24 Aug 1992 | 49 mm13 Aug 1979 | 79 mm1979 · driest 0 mm in 2006 | 107 |
| September | 38.3°C3 Sep 1950 | -12.8°C25 Sep 1926 | 27 mm4 Sep 1940 | 74 mm1940 · driest 0 mm in 1935 | 108 |
| October | 34.4°C6 Oct 1921 | -14.4°C31 Oct 2002 | 38 mm4 Oct 1923 | 90 mm1956 · driest 0 mm in 1917 | 107 |
| November | 23.9°C1 Nov 1950 | -25.6°C23 Nov 1985 | 24 mm19 Nov 1937 | 72 mm1910 · driest 0 mm in 1929 | 108 |
| December | 18.9°C7 Dec 1908 | -37.2°C26 Dec 1924 | 25 mm21 Dec 1925 | 98 mm1983 · driest 1 mm in 1989 | 107 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 | 1 |
| February | 0 | 0 | 22 | <1 | <1 |
| March | 0 | 0 | 17 | <1 | <1 |
| April | 2 | 0 | 10 | <1 | 0 |
| May | 10 | 3 | 2 | 1 | 0 |
| June | 18 | 9 | <1 | <1 | 0 |
| July | 26 | 23 | 0 | <1 | 0 |
| August | 26 | 22 | <1 | <1 | 0 |
| September | 18 | 8 | 1 | <1 | 0 |
| October | 3 | <1 | 10 | <1 | 0 |
| November | 0 | 0 | 22 | <1 | <1 |
| December | 0 | 0 | 26 | <1 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 21% | 2% | 20% | -1.3–5.5°C |
| February | 0% | 17% | 1% | 14% | 3.0–10.1°C |
| March | 8% | 15% | 1% | 13% | 10.1–15.9°C |
| April | 38% | 14% | <1% | 9% | 15.6–21.7°C |
| May | 68% | 15% | 2% | 14% | 20.4–26.6°C |
| June | 84% | 13% | 2% | 9% | 25.0–31.3°C |
| July | 96% | 4% | <1% | <1% | 31.6–36.4°C |
| August | 95% | 5% | <1% | 1% | 30.0–35.1°C |
| September | 85% | 8% | <1% | 5% | 23.5–29.7°C |
| October | 43% | 12% | 1% | 10% | 16.4–21.5°C |
| November | <1% | 19% | 2% | 19% | 6.5–11.9°C |
| December | 0% | 20% | 2% | 20% | 0.0–5.9°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