September
September · May · October
United States · 1991–2020
September leads for comfortable weather in Bessemer: typically 27°C by day, 14°C at night, with 103 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · October
August · June · July
October · April · May
The weakest month is January, scoring 6 against September’s 75 — days reach only 8.5°C, 15° below the 24°C the score treats as ideal, and nights drop to -2.8°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 | 8.5°C | -2.8°C | 85 mm | 6.9 | 9 h 49 | 6 | Good coverage |
| February | 11°C | -1.8°C | 63 mm | 5.9 | 10 h 44 | 21 | Good coverage |
| March | 15.8°C | 1.4°C | 100 mm | 8.2 | 11 h 50 | 35 | Good coverage |
| April | 22.5°C | 6.5°C | 90 mm | 8.5 | 13 h 07 | 67 | Good coverage |
| May | 26.1°C | 11.5°C | 97 mm | 9.6 | 14 h 11 | 72 | Good coverage |
| June | 29.7°C | 16°C | 99 mm | 9.3 | 14 h 45 | 65 | Good coverage |
| July | 31.7°C | 18.6°C | 117 mm | 9.4 | 14 h 31 | 51 | Good coverage |
| August | 30.7°C | 17.7°C | 76 mm | 7 | 13 h 37 | 64 | Good coverage |
| September | 27°C | 14°C | 103 mm | 7 | 12 h 23 | 75 | Good coverage |
| October | 21.4°C | 7°C | 67 mm | 5.7 | 11 h 09 | 70 | Good coverage |
| November | 15.1°C | 1.8°C | 73 mm | 6.6 | 10 h 05 | 38 | Good coverage |
| December | 9.7°C | -1.6°C | 84 mm | 7.1 | 9 h 34 | 12 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 29.4°C30 Jan 2002 | -23.9°C21 Jan 1985 | 81 mm28 Jan 1998 | 224 mm1998 · driest 5 mm in 1981 | 84 |
| February | 28.3°C11 Feb 1932 | -25.0°C5 Feb 1996 | 65 mm7 Feb 2004 | 205 mm1998 · driest 4 mm in 1968 | 85 |
| March | 32.2°C19 Mar 1945 | -20.0°C8 Mar 1960 | 99 mm17 Mar 1936 | 248 mm1936 · driest 16 mm in 1925 | 85 |
| April | 37.2°C12 Apr 2001 | -11.7°C6 Apr 1982 | 88 mm22 Apr 1992 | 206 mm1918 · driest 10 mm in 1942 | 85 |
| May | 37.2°C22 May 1941 | -4.4°C5 May 1973 | 89 mm28 May 1973 | 301 mm2003 · driest 21 mm in 1918 | 85 |
| June | 38.9°C29 Jun 1934 | 1.7°C6 Jun 1945 | 83 mm23 Jun 1995 | 278 mm1995 · driest 19 mm in 1984 | 86 |
| July | 41.7°C14 Jul 1954 | 6.1°C23 Jul 1947 | 86 mm19 Jul 1954 | 224 mm1994 · driest 11 mm in 1932 | 86 |
| August | 40.0°C4 Aug 1930 | 5.0°C31 Aug 1976 | 123 mm16 Aug 1928 | 322 mm1940 · driest 22 mm in 1965 | 86 |
| September | 39.4°C2 Sep 1932 | 0.0°C29 Sep 1942 | 140 mm10 Sep 1950 | 297 mm1999 · driest 9 mm in 1933 | 85 |
| October | 37.2°C6 Oct 1941 | -8.9°C27 Oct 1962 | 144 mm2 Oct 1929 | 277 mm1929 · driest 0 mm in 2000 | 85 |
| November | 30.6°C1 Nov 1950 | -13.9°C28 Nov 1938 | 82 mm9 Nov 1996 | 203 mm1948 · driest 9 mm in 1917 | 86 |
| December | 26.7°C7 Dec 1998 | -25.0°C30 Dec 1917 | 91 mm29 Dec 1958 | 190 mm1948 · driest 7 mm in 1965 | 86 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | <1 | 0 | 22 | 3 | 1 |
| February | <1 | 0 | 19 | 2 | <1 |
| March | 3 | <1 | 14 | 4 | <1 |
| April | 11 | 3 | 3 | 3 | <1 |
| May | 19 | 7 | <1 | 4 | 0 |
| June | 26 | 16 | 0 | 3 | 0 |
| July | 30 | 23 | 0 | 4 | 0 |
| August | 28 | 20 | 0 | 3 | 0 |
| September | 21 | 7 | 0 | 3 | 0 |
| October | 7 | <1 | 2 | 2 | 0 |
| November | 1 | 0 | 13 | 2 | 0 |
| December | <1 | 0 | 21 | 3 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 3% | 25% | 9% | 26% | 5.2–11.8°C |
| February | 7% | 25% | 9% | 28% | 7.3–14.0°C |
| March | 21% | 27% | 11% | 30% | 12.2–18.8°C |
| April | 49% | 28% | 10% | 31% | 19.2–23.8°C |
| May | 65% | 30% | 11% | 37% | 24.0–28.6°C |
| June | 69% | 30% | 12% | 34% | 27.7–31.2°C |
| July | 67% | 32% | 13% | 40% | 29.4–33.1°C |
| August | 71% | 28% | 11% | 29% | 28.8–32.3°C |
| September | 74% | 23% | 9% | 22% | 25.0–30.0°C |
| October | 57% | 20% | 9% | 19% | 19.5–23.7°C |
| November | 19% | 22% | 8% | 21% | 12.8–17.7°C |
| December | 4% | 23% | 9% | 23% | 6.3–12.4°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