September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Buffalo City: typically 27.8°C by day, 15.4°C at night, with 93 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
June · August · July
October · April · May
The weakest month is January, scoring 5 against September’s 76 — days reach only 7.7°C, 16° below the 24°C the score treats as ideal, and nights drop to -3.5°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 | 7.7°C | -3.5°C | 83 mm | 6.6 | 9 h 57 | 5 | Strong coverage |
| February | 10.4°C | -1.5°C | 83 mm | 6.3 | 10 h 49 | 16 | Strong coverage |
| March | 15.4°C | 2.9°C | 128 mm | 9.1 | 11 h 51 | 31 | Strong coverage |
| April | 21°C | 7.9°C | 142 mm | 8.2 | 13 h 04 | 58 | Strong coverage |
| May | 25°C | 13.2°C | 144 mm | 9.4 | 14 h 04 | 72 | Strong coverage |
| June | 29.4°C | 18.2°C | 99 mm | 7.5 | 14 h 36 | 63 | Strong coverage |
| July | 31.9°C | 20.4°C | 106 mm | 7.6 | 14 h 24 | 50 | Strong coverage |
| August | 31.7°C | 19.7°C | 95 mm | 6.7 | 13 h 32 | 54 | Strong coverage |
| September | 27.8°C | 15.4°C | 93 mm | 6.4 | 12 h 22 | 76 | Strong coverage |
| October | 21.8°C | 8.8°C | 101 mm | 7 | 11 h 12 | 69 | Strong coverage |
| November | 14.9°C | 3°C | 122 mm | 7.3 | 10 h 12 | 32 | Strong coverage |
| December | 9.2°C | -1.5°C | 97 mm | 7.2 | 9 h 43 | 9 | Strong coverage |
What has changed
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 28.3°C24 Jan 1943 | -26.1°C12 Jan 1918 | 107 mm30 Jan 1969 | 223 mm1949 · driest 2 mm in 2026 | 108 |
| February | 31.1°C28 Feb 2024 | -25.6°C2 Feb 1951 | 115 mm23 Feb 1985 | 237 mm1989 · driest 12 mm in 1972 | 110 |
| March | 35.6°C23 Mar 2026 | -18.9°C12 Mar 1948 | 158 mm19 Mar 2008 | 389 mm2008 · driest 11 mm in 1918 | 110 |
| April | 35.0°C1 Apr 1940 | -6.1°C1 Apr 1924 | 143 mm5 Apr 2025 | 429 mm1927 · driest 26 mm in 1989 | 111 |
| May | 38.3°C31 May 1934 | -1.7°C1 May 1903 | 117 mm10 May 1943 | 380 mm2020 · driest 9 mm in 1969 | 113 |
| June | 43.3°C19 Jun 1936 | 5.6°C16 Jun 1917 | 98 mm13 Jun 1925 | 382 mm1928 · driest 0 mm in 1952 | 109 |
| July | 44.4°C14 Jul 1954 | 7.8°C14 Jul 1975 | 116 mm18 Jul 1918 | 273 mm1905 · driest 3 mm in 1934 | 108 |
| August | 45.6°C9 Aug 1934 | 8.3°C29 Aug 1986 | 114 mm10 Aug 2023 | 233 mm2019 · driest 3 mm in 2000 | 107 |
| September | 41.7°C8 Sep 1939 | 0.0°C27 Sep 1942 | 227 mm4 Sep 1985 | 290 mm1996 · driest 1 mm in 2004 | 108 |
| October | 36.1°C1 Oct 1938 | -7.8°C30 Oct 1917 | 119 mm31 Oct 1929 | 341 mm1925 · driest 1 mm in 1965 | 108 |
| November | 30.6°C6 Nov 1934 | -12.8°C29 Nov 1976 | 132 mm5 Nov 1994 | 396 mm1994 · driest 5 mm in 1920 | 106 |
| December | 28.9°C28 Dec 2025 | -26.7°C9 Dec 1917 | 149 mm13 Dec 1927 | 251 mm1982 · driest 4 mm in 1955 | 108 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 21 | 3 | 1 |
| February | <1 | 0 | 16 | 3 | 1 |
| March | 3 | <1 | 9 | 4 | <1 |
| April | 8 | <1 | 2 | 4 | 0 |
| May | 18 | 4 | 0 | 4 | 0 |
| June | 28 | 15 | 0 | 3 | 0 |
| July | 30 | 24 | 0 | 3 | 0 |
| August | 30 | 23 | 0 | 3 | 0 |
| September | 23 | 10 | 0 | 3 | 0 |
| October | 10 | 2 | 1 | 3 | 0 |
| November | 1 | 0 | 9 | 4 | <1 |
| December | 0 | 0 | 18 | 3 | <1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 78); on 2011–2025 it is September (79). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 5% | 20% | 8% | 16% | 4.9–12.1°C |
| February | 12% | 21% | 9% | 19% | 7.3–14.8°C |
| March | 27% | 25% | 12% | 27% | 12.5–20.0°C |
| April | 50% | 27% | 13% | 30% | 19.3–24.4°C |
| May | 66% | 30% | 14% | 36% | 23.6–28.0°C |
| June | 74% | 26% | 12% | 28% | 28.0–32.0°C |
| July | 79% | 21% | 9% | 19% | 30.6–35.0°C |
| August | 79% | 21% | 9% | 20% | 29.7–35.0°C |
| September | 78% | 19% | 9% | 18% | 25.8–31.3°C |
| October | 61% | 19% | 9% | 19% | 20.3–25.9°C |
| November | 25% | 21% | 10% | 17% | 12.2–18.0°C |
| December | 6% | 21% | 10% | 19% | 7.1–13.5°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