October
October · April · May
United States · 1991–2020
October leads for comfortable weather in Collinston: typically 25.2°C by day, 11.1°C at night, with 120 mm of rain. Based on measured 1991–2020 NOAA station history.
October · April · May
August · June · September
March · November · October
The weakest month is January, scoring 17 against October’s 75 — days reach only 13.1°C, 11° below the 24°C the score treats as ideal, and nights drop to 1.2°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 | 13.1°C | 1.2°C | 152 mm | 9.1 | 10 h 13 | 17 | Good coverage |
| February | 15.2°C | 2.5°C | 114 mm | 7.3 | 10 h 58 | 34 | Good coverage |
| March | 20°C | 6.5°C | 121 mm | 7.7 | 11 h 53 | 55 | Good coverage |
| April | 24.3°C | 10.8°C | 154 mm | 6.7 | 12 h 56 | 71 | Good coverage |
| May | 28.1°C | 16.1°C | 119 mm | 7.7 | 13 h 49 | 68 | Good coverage |
| June | 31.8°C | 20.4°C | 107 mm | 7.3 | 14 h 17 | 51 | Good coverage |
| July | 33.3°C | 21.8°C | 113 mm | 7.2 | 14 h 06 | 42 | Good coverage |
| August | 33.6°C | 21.3°C | 82 mm | 5.8 | 13 h 21 | 48 | Good coverage |
| September | 30.7°C | 17.5°C | 96 mm | 5.2 | 12 h 20 | 63 | Good coverage |
| October | 25.2°C | 11.1°C | 120 mm | 5.9 | 11 h 19 | 75 | Good coverage |
| November | 19°C | 5.6°C | 111 mm | 7.1 | 10 h 26 | 52 | Good coverage |
| December | 13.9°C | 2°C | 135 mm | 7.7 | 10 h 00 | 25 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 28.9°C27 Jan 1975 | -15.6°C11 Jan 1982 | 125 mm3 Jan 1951 | 378 mm1999 · driest 13 mm in 1986 | 87 |
| February | 30.6°C24 Feb 2012 | -24.4°C13 Feb 1899 | 117 mm12 Feb 1984 | 286 mm1987 · driest 23 mm in 2009 | 88 |
| March | 33.9°C31 Mar 1974 | -9.4°C3 Mar 1943 | 149 mm21 Mar 1955 | 315 mm1922 · driest 13 mm in 2007 | 89 |
| April | 34.4°C19 Apr 2006 | -2.2°C11 Apr 1989 | 220 mm28 Apr 1991 | 632 mm1991 · driest 4 mm in 1925 | 90 |
| May | 38.3°C31 May 1951 | 3.9°C4 May 2013 | 163 mm5 May 1989 | 352 mm1975 · driest 4 mm in 2012 | 89 |
| June | 42.2°C20 Jun 1936 | 8.9°C1 Jun 1966 | 92 mm29 Jun 1922 | 369 mm2004 · driest 0 mm in 1896 | 88 |
| July | 42.2°C17 Jul 1954 | 12.2°C15 Jul 1967 | 135 mm25 Jul 1969 | 326 mm1989 · driest 0 mm in 1896 | 88 |
| August | 41.7°C31 Aug 2000 | 10.6°C30 Aug 1986 | 121 mm22 Aug 2006 | 281 mm2008 · driest 7 mm in 2000 | 88 |
| September | 43.3°C5 Sep 1951 | 2.8°C29 Sep 1942 | 161 mm3 Sep 2008 | 310 mm2008 · driest 4 mm in 1948 | 88 |
| October | 37.8°C7 Oct 1954 | -6.1°C31 Oct 1898 | 214 mm31 Oct 1941 | 556 mm2009 · driest 0 mm in 1952 | 88 |
| November | 31.7°C2 Nov 1971 | -7.8°C29 Nov 1976 | 107 mm3 Nov 1925 | 355 mm1957 · driest 0 mm in 1924 | 87 |
| December | 31.7°C6 Dec 1922 | -16.1°C24 Dec 1989 | 150 mm26 Dec 1982 | 475 mm1982 · driest 11 mm in 1896 | 87 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | <1 | 0 | 16 | 4 |
| February | 2 | 0 | 11 | 4 |
| March | 8 | <1 | 4 | 4 |
| April | 16 | 3 | <1 | 4 |
| May | 25 | 13 | 0 | 4 |
| June | 29 | 24 | 0 | 3 |
| July | 30 | 27 | 0 | 3 |
| August | 30 | 27 | 0 | 2 |
| September | 27 | 19 | 0 | 2 |
| October | 17 | 5 | <1 | 3 |
| November | 5 | <1 | 5 | 3 |
| December | <1 | 0 | 14 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 16% | 28% | 14% | 33% | 10.4–17.4°C |
| February | 25% | 28% | 14% | 30% | 12.1–19.0°C |
| March | 45% | 26% | 13% | 26% | 17.3–23.5°C |
| April | 67% | 24% | 12% | 23% | 23.2–27.3°C |
| May | 76% | 24% | 12% | 23% | 26.9–30.7°C |
| June | 77% | 23% | 11% | 23% | 30.7–34.8°C |
| July | 76% | 23% | 10% | 23% | 32.2–35.9°C |
| August | 81% | 19% | 7% | 16% | 31.9–36.5°C |
| September | 80% | 19% | 7% | 15% | 29.1–33.5°C |
| October | 77% | 16% | 8% | 14% | 23.8–28.3°C |
| November | 44% | 22% | 11% | 20% | 16.8–22.3°C |
| December | 19% | 25% | 13% | 26% | 12.3–17.9°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