October
October · April · May
United States · 1991–2020
October leads for comfortable weather in Calera: typically 25.2°C by day, 10.1°C at night, with 107 mm of rain. Based on measured 1991–2020 NOAA station history.
October · April · May
August · July · September
November · March · April
The weakest month is January, scoring 25 against October’s 75 — days reach only 11.8°C, 12° below the 24°C the score treats as ideal, and nights drop to -1.4°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 | 11.8°C | -1.4°C | 62 mm | 4.8 | 10 h 07 | 25 | Good coverage |
| February | 14°C | 0.3°C | 67 mm | 5.6 | 10 h 55 | 34 | Good coverage |
| March | 18.7°C | 5.3°C | 99 mm | 6.8 | 11 h 52 | 53 | Good coverage |
| April | 23.3°C | 9.3°C | 104 mm | 6.6 | 12 h 59 | 74 | Good coverage |
| May | 27.1°C | 15.3°C | 149 mm | 7.9 | 13 h 54 | 69 | Good coverage |
| June | 31.7°C | 19.7°C | 125 mm | 5.7 | 14 h 24 | 51 | Good coverage |
| July | 34.1°C | 21.5°C | 84 mm | 5 | 14 h 12 | 47 | Good coverage |
| August | 34.4°C | 20.9°C | 68 mm | 3.9 | 13 h 25 | 50 | Good coverage |
| September | 30.2°C | 16.5°C | 101 mm | 5 | 12 h 21 | 66 | Good coverage |
| October | 25.2°C | 10.1°C | 107 mm | 5.7 | 11 h 16 | 75 | Good coverage |
| November | 18.2°C | 4.3°C | 85 mm | 5 | 10 h 21 | 53 | Good coverage |
| December | 13°C | -0.4°C | 83 mm | 4.7 | 9 h 54 | 28 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 31.7°C31 Jan 1911 | -23.9°C12 Jan 1918 | 97 mm27 Jan 1916 | 263 mm1932 · driest 0 mm in 2003 | 104 |
| February | 33.9°C23 Feb 1996 | -20.0°C2 Feb 1951 | 80 mm17 Feb 1938 | 201 mm1945 · driest 2 mm in 1996 | 107 |
| March | 37.2°C19 Mar 1907 | -13.9°C3 Mar 1943 | 91 mm19 Mar 2008 | 265 mm2008 · driest 6 mm in 1950 | 104 |
| April | 36.7°C19 Apr 2006 | -3.9°C5 Apr 1920 | 131 mm28 Apr 1917 | 363 mm1957 · driest 7 mm in 1948 | 105 |
| May | 39.4°C28 May 1927 | 0.6°C1 May 1903 | 191 mm10 May 1993 | 319 mm1982 · driest 13 mm in 1963 | 105 |
| June | 44.4°C28 Jun 1980 | 7.2°C1 Jun 1983 | 158 mm17 Jun 1945 | 337 mm2007 · driest 2 mm in 1933 | 106 |
| July | 43.9°C17 Jul 1954 | 11.1°C12 Jul 1953 | 136 mm3 Jul 1903 | 277 mm1903 · driest 0 mm in 1943 | 105 |
| August | 47.8°C10 Aug 1936 | 10.0°C28 Aug 1906 | 188 mm17 Aug 1926 | 318 mm1914 · driest 0 mm in 2000 | 104 |
| September | 43.9°C2 Sep 1951 | 1.1°C27 Sep 1942 | 147 mm6 Sep 1973 | 291 mm1973 · driest 0 mm in 1956 | 104 |
| October | 37.8°C1 Oct 1938 | -8.9°C30 Oct 1917 | 136 mm31 Oct 1974 | 452 mm1981 · driest 0 mm in 1924 | 104 |
| November | 31.1°C17 Nov 1952 | -12.8°C11 Nov 1950 | 105 mm30 Nov 2006 | 295 mm1946 · driest 0 mm in 1960 | 106 |
| December | 30.6°C24 Dec 1955 | -21.7°C23 Dec 1989 | 148 mm13 Dec 1927 | 230 mm1927 · driest 0 mm in 1917 | 105 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | <1 | 0 | 20 | 2 |
| February | 2 | <1 | 13 | 2 |
| March | 5 | <1 | 6 | 3 |
| April | 12 | 1 | <1 | 3 |
| May | 22 | 8 | 0 | 4 |
| June | 28 | 22 | 0 | 4 |
| July | 29 | 27 | 0 | 2 |
| August | 28 | 25 | 0 | 2 |
| September | 25 | 17 | 0 | 3 |
| October | 17 | 6 | <1 | 3 |
| November | 4 | <1 | 8 | 3 |
| December | <1 | 0 | 17 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 12% | 16% | 6% | 14% | 8.1–15.4°C |
| February | 20% | 20% | 8% | 17% | 10.7–17.6°C |
| March | 43% | 20% | 9% | 18% | 15.7–22.9°C |
| April | 64% | 23% | 11% | 22% | 21.8–26.0°C |
| May | 72% | 26% | 13% | 29% | 25.6–29.5°C |
| June | 79% | 21% | 11% | 18% | 30.1–34.6°C |
| July | 85% | 15% | 7% | 12% | 32.1–37.1°C |
| August | 85% | 15% | 7% | 13% | 32.3–38.1°C |
| September | 82% | 17% | 8% | 16% | 28.7–33.6°C |
| October | 73% | 17% | 9% | 16% | 22.4–28.0°C |
| November | 40% | 17% | 8% | 14% | 15.6–21.2°C |
| December | 13% | 16% | 7% | 12% | 9.9–15.3°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