September
September · May · August
United States · 1991–2020
September leads for comfortable weather in North College Hill: typically 26.2°C by day, 13.6°C at night, with 85 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · August
August · July · June
October · April · September
The weakest month is January, scoring 5 against September’s 80 — days reach only 3.6°C, 20° 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 | 3.6°C | -5.5°C | 92 mm | 9.9 | 9 h 41 | 5 | Strong coverage |
| February | 5.9°C | -4.4°C | 73 mm | 8.2 | 10 h 40 | 5 | Strong coverage |
| March | 11.8°C | 0.4°C | 110 mm | 10.5 | 11 h 50 | 16 | Strong coverage |
| April | 19.1°C | 6.3°C | 127 mm | 10.9 | 13 h 10 | 48 | Strong coverage |
| May | 23.9°C | 11.7°C | 133 mm | 11.2 | 14 h 18 | 73 | Strong coverage |
| June | 28.3°C | 16.7°C | 132 mm | 10.7 | 14 h 55 | 62 | Strong coverage |
| July | 30.1°C | 18.5°C | 112 mm | 9 | 14 h 40 | 57 | Strong coverage |
| August | 29.9°C | 17.7°C | 88 mm | 6.7 | 13 h 42 | 65 | Strong coverage |
| September | 26.2°C | 13.6°C | 85 mm | 6.8 | 12 h 24 | 80 | Strong coverage |
| October | 19.4°C | 7.2°C | 88 mm | 7.4 | 11 h 06 | 60 | Strong coverage |
| November | 12.2°C | 1.7°C | 84 mm | 8.1 | 9 h 58 | 26 | Strong coverage |
| December | 5.8°C | -2.8°C | 98 mm | 10.1 | 9 h 25 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.0°C18 Jan 1996 | -30.6°C19 Jan 1994 | 68 mm3 Jan 2000 | 195 mm2005 · driest 33 mm in 2016 | 29 |
| February | 24.4°C25 Feb 2017 | -22.8°C4 Feb 1996 | 70 mm18 Feb 2000 | 154 mm2000 · driest 29 mm in 1992 | 30 |
| March | 29.4°C22 Mar 2012 | -20.0°C2 Mar 1980 | 104 mm1 Mar 2017 | 280 mm2008 · driest 32 mm in 2001 | 30 |
| April | 31.1°C24 Apr 1990 | -8.3°C9 Apr 1997 | 77 mm16 Apr 1998 | 368 mm2011 · driest 38 mm in 1997 | 28 |
| May | 33.9°C31 May 1988 | -2.2°C2 May 1994 | 74 mm25 May 2017 | 283 mm1995 · driest 24 mm in 2007 | 32 |
| June | 38.3°C25 Jun 1988 | 3.3°C5 Jun 1990 | 83 mm11 Jun 2011 | 278 mm1998 · driest 32 mm in 1991 | 30 |
| July | 39.4°C30 Jul 1999 | 8.3°C1 Jul 1988 | 66 mm31 Jul 2004 | 305 mm1992 · driest 25 mm in 2011 | 31 |
| August | 38.9°C16 Aug 1988 | 7.2°C8 Aug 1989 | 92 mm31 Aug 2005 | 204 mm2016 · driest 12 mm in 2007 | 31 |
| September | 37.8°C4 Sep 2011 | -1.1°C30 Sep 1993 | 115 mm26 Sep 2011 | 222 mm2011 · driest 12 mm in 2010 | 31 |
| October | 32.8°C8 Oct 2007 | -5.6°C29 Oct 1988 | 90 mm19 Oct 2004 | 179 mm2007 · driest 28 mm in 1991 | 28 |
| November | 27.2°C1 Nov 1999 | -11.7°C18 Nov 2014 | 54 mm15 Nov 2011 | 211 mm2011 · driest 25 mm in 2009 | 30 |
| December | 23.3°C6 Dec 1998 | -31.1°C22 Dec 1989 | 56 mm23 Dec 2004 | 188 mm2011 · driest 38 mm in 1992 | 28 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 25 | 3 | 4 |
| February | 0 | 0 | 22 | 2 | 4 |
| March | 1 | 0 | 16 | 4 | 2 |
| April | 6 | <1 | 4 | 4 | <1 |
| May | 15 | 4 | <1 | 4 | 0 |
| June | 25 | 12 | 0 | 4 | 0 |
| July | 29 | 18 | 0 | 4 | 0 |
| August | 29 | 16 | 0 | 3 | 0 |
| September | 19 | 7 | 0 | 3 | 0 |
| October | 6 | <1 | 2 | 3 | <1 |
| November | <1 | 0 | 13 | 3 | <1 |
| December | 0 | 0 | 22 | 3 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 30% | 9% | 36% | 0.0–8.1°C |
| February | 2% | 29% | 8% | 35% | 1.0–11.0°C |
| March | 11% | 33% | 12% | 44% | 8.5–15.1°C |
| April | 30% | 35% | 13% | 45% | 17.4–20.9°C |
| May | 53% | 34% | 14% | 44% | 21.6–26.5°C |
| June | 64% | 31% | 13% | 36% | 26.8–29.6°C |
| July | 71% | 28% | 12% | 29% | 28.3–33.0°C |
| August | 77% | 25% | 10% | 24% | 27.9–32.4°C |
| September | 71% | 23% | 9% | 22% | 24.1–28.3°C |
| October | 39% | 24% | 9% | 26% | 16.6–21.4°C |
| November | 10% | 28% | 11% | 32% | 9.5–16.0°C |
| December | <1% | 31% | 10% | 40% | 1.4–8.8°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