September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Buffalo: typically 27°C by day, 14.3°C at night, with 101 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
August · July · June
October · April · November
The weakest month is January, scoring 5 against September’s 77 — days reach only 6.7°C, 17° 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 | 6.7°C | -3.7°C | 94 mm | 7.3 | 9 h 50 | 5 | Strong coverage |
| February | 9.8°C | -1.9°C | 87 mm | 5.5 | 10 h 45 | 13 | Strong coverage |
| March | 15°C | 1.6°C | 120 mm | 7.3 | 11 h 50 | 30 | Good coverage |
| April | 21.3°C | 6.9°C | 112 mm | 7.4 | 13 h 06 | 62 | Strong coverage |
| May | 24.8°C | 12.3°C | 146 mm | 8.4 | 14 h 10 | 72 | Strong coverage |
| June | 28.5°C | 16.8°C | 125 mm | 8 | 14 h 44 | 65 | Strong coverage |
| July | 30°C | 18.7°C | 122 mm | 7.4 | 14 h 31 | 57 | Strong coverage |
| August | 30.2°C | 17.8°C | 82 mm | 5.3 | 13 h 36 | 66 | Good coverage |
| September | 27°C | 14.3°C | 101 mm | 5.8 | 12 h 23 | 77 | Good coverage |
| October | 21.4°C | 8.2°C | 103 mm | 6.1 | 11 h 10 | 67 | Good coverage |
| November | 14.6°C | 2.5°C | 77 mm | 5.3 | 10 h 06 | 39 | Strong coverage |
| December | 8.4°C | -1.6°C | 111 mm | 7.2 | 9 h 35 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 22.2°C29 Jan 1975 | -31.7°C21 Jan 1984 | 76 mm21 Jan 2011 | 196 mm1978 · driest 0 mm in 1986 | 50 |
| February | 25.0°C26 Feb 2017 | -22.2°C9 Feb 1971 | 111 mm23 Feb 1975 | 284 mm1989 · driest 4 mm in 2006 | 50 |
| March | 32.2°C27 Mar 2007 | -19.4°C3 Mar 1980 | 132 mm1 Mar 1997 | 347 mm1997 · driest 15 mm in 1969 | 49 |
| April | 31.1°C15 Apr 2006 | -6.7°C16 Apr 1983 | 118 mm28 Apr 1970 | 302 mm1970 · driest 22 mm in 1976 | 50 |
| May | 32.8°C23 May 1970 | -1.7°C4 May 1976 | 151 mm2 May 2010 | 317 mm2004 · driest 18 mm in 2005 | 49 |
| June | 37.2°C25 Jun 1988 | 4.4°C1 Jun 1972 | 83 mm18 Jun 2000 | 297 mm2018 · driest 28 mm in 2006 | 49 |
| July | 41.7°C23 Jul 1983 | 8.3°C7 Jul 1972 | 102 mm4 Jul 2015 | 297 mm1967 · driest 25 mm in 1991 | 50 |
| August | 40.0°C21 Aug 1983 | 6.1°C29 Aug 1986 | 119 mm26 Aug 1978 | 233 mm1982 · driest 5 mm in 2006 | 49 |
| September | 37.2°C11 Sep 1983 | 1.1°C29 Sep 1967 | 126 mm14 Sep 1979 | 292 mm2018 · driest 13 mm in 2014 | 49 |
| October | 36.1°C7 Oct 2007 | -6.1°C24 Oct 1981 | 102 mm10 Oct 2017 | 235 mm2009 · driest 11 mm in 1987 | 49 |
| November | 28.3°C1 Nov 2016 | -16.1°C30 Nov 1976 | 102 mm4 Nov 2017 | 204 mm1984 · driest 2 mm in 2013 | 50 |
| December | 25.6°C4 Dec 1982 | -28.3°C22 Dec 1989 | 118 mm8 Dec 1978 | 317 mm1978 · driest 8 mm in 1995 | 50 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 20 | 3 | 1 |
| February | <1 | 0 | 18 | 3 | <1 |
| March | 2 | <1 | 13 | 4 | <1 |
| April | 8 | <1 | 4 | 4 | 0 |
| May | 16 | 2 | <1 | 5 | 0 |
| June | 24 | 11 | 0 | 4 | 0 |
| July | 29 | 16 | 0 | 4 | 0 |
| August | 28 | 18 | 0 | 3 | 0 |
| September | 21 | 8 | 0 | 3 | 0 |
| October | 8 | <1 | 2 | 3 | 0 |
| November | <1 | 0 | 10 | 3 | 0 |
| December | 0 | 0 | 18 | 3 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 27% | 11% | 35% | 2.6–9.7°C |
| February | 5% | 25% | 12% | 24% | 5.3–13.0°C |
| March | 20% | 28% | 12% | 30% | 12.2–17.9°C |
| April | 47% | 27% | 14% | 31% | 18.9–23.4°C |
| May | 63% | 30% | 14% | 35% | 22.6–27.3°C |
| June | 73% | 27% | 14% | 30% | 27.3–30.5°C |
| July | 75% | 25% | 13% | 23% | 28.8–32.3°C |
| August | 80% | 21% | 10% | 19% | 28.8–32.1°C |
| September | 76% | 21% | 10% | 18% | 25.0–29.7°C |
| October | 52% | 21% | 10% | 18% | 18.9–23.5°C |
| November | 16% | 24% | 12% | 26% | 11.3–17.1°C |
| December | 2% | 25% | 12% | 28% | 5.8–11.2°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