September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Big Spring (historical): typically 24.1°C by day, 9.5°C at night, with 95 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
September · October · May
The weakest month is January, scoring 5 against September’s 78 — days reach only 0.2°C, 24° 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 | 0.2°C | -11°C | 23 mm | 4.9 | 9 h 33 | 5 | Good coverage |
| February | 3.6°C | -8.6°C | 39 mm | 5.5 | 10 h 35 | 5 | Good coverage |
| March | 10.5°C | -2.9°C | 57 mm | 6.9 | 11 h 49 | 17 | Good coverage |
| April | 17°C | 2.7°C | 101 mm | 9.6 | 13 h 14 | 40 | Good coverage |
| May | 22.1°C | 8.8°C | 138 mm | 11.3 | 14 h 25 | 61 | Good coverage |
| June | 26.9°C | 14.3°C | 131 mm | 10.5 | 15 h 04 | 69 | Good coverage |
| July | 29.6°C | 17°C | 117 mm | 8.6 | 14 h 49 | 61 | Good coverage |
| August | 28.9°C | 15.8°C | 111 mm | 7.6 | 13 h 47 | 67 | Good coverage |
| September | 24.1°C | 9.5°C | 95 mm | 6.9 | 12 h 25 | 78 | Good coverage |
| October | 18.1°C | 3.7°C | 72 mm | 7.1 | 11 h 03 | 51 | Good coverage |
| November | 9.8°C | -2.3°C | 56 mm | 5.9 | 9 h 51 | 17 | Good coverage |
| December | 2.9°C | -8.3°C | 34 mm | 5.2 | 9 h 16 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.9°C28 Jan 2002 | -33.3°C5 Jan 1999 | 30 mm16 Jan 1980 | 64 mm1973 · driest 0 mm in 1981 | 48 |
| February | 23.9°C26 Feb 1995 | -37.8°C3 Feb 1996 | 62 mm21 Feb 1997 | 125 mm1997 · driest 1 mm in 1970 | 50 |
| March | 30.6°C29 Mar 1986 | -29.4°C12 Mar 1998 | 48 mm19 Mar 1982 | 175 mm1973 · driest 2 mm in 1994 | 51 |
| April | 33.3°C26 Apr 1989 | -13.9°C6 Apr 1982 | 74 mm17 Apr 1976 | 252 mm1991 · driest 19 mm in 1989 | 50 |
| May | 34.4°C25 May 1967 | -3.3°C4 May 2005 | 83 mm29 May 1962 | 288 mm1996 · driest 17 mm in 1979 | 51 |
| June | 41.7°C25 Jun 1988 | 1.7°C13 Jun 1985 | 98 mm14 Jun 1976 | 297 mm2010 · driest 22 mm in 1988 | 51 |
| July | 40.6°C28 Jul 1983 | 6.7°C10 Jul 1996 | 117 mm5 Jul 1993 | 527 mm1993 · driest 8 mm in 1983 | 51 |
| August | 41.7°C29 Aug 1984 | 1.7°C28 Aug 1986 | 133 mm24 Aug 2007 | 313 mm2007 · driest 15 mm in 1983 | 51 |
| September | 37.8°C1 Sep 1984 | -5.6°C29 Sep 1984 | 169 mm15 Sep 1992 | 401 mm1992 · driest 18 mm in 2012 | 51 |
| October | 35.0°C5 Oct 1963 | -10.6°C30 Oct 1988 | 91 mm31 Oct 1974 | 173 mm1998 · driest 1 mm in 1975 | 50 |
| November | 26.7°C9 Nov 1999 | -24.4°C9 Nov 1991 | 83 mm3 Nov 2003 | 158 mm1992 · driest 1 mm in 1989 | 50 |
| December | 20.0°C5 Dec 1998 | -36.1°C24 Dec 1989 | 38 mm24 Dec 1965 | 100 mm1982 · driest 0 mm in 1980 | 50 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 5 |
| February | 0 | 0 | 26 | 1 | 5 |
| March | 1 | 0 | 22 | 2 | 2 |
| April | 4 | <1 | 11 | 4 | <1 |
| May | 10 | 2 | 1 | 4 | 0 |
| June | 22 | 7 | 0 | 5 | 0 |
| July | 29 | 15 | 0 | 4 | 0 |
| August | 27 | 12 | 0 | 3 | 0 |
| September | 14 | 4 | <1 | 3 | 0 |
| October | 5 | <1 | 9 | 2 | <1 |
| November | <1 | 0 | 20 | 2 | 1 |
| December | 0 | 0 | 28 | 1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 15% | 2% | 9% | -4.1–5.0°C |
| February | <1% | 17% | 3% | 13% | -1.4–7.3°C |
| March | 11% | 21% | 6% | 20% | 6.1–13.6°C |
| April | 30% | 30% | 12% | 39% | 14.9–20.6°C |
| May | 52% | 34% | 13% | 47% | 20.9–25.5°C |
| June | 67% | 31% | 14% | 37% | 25.7–29.6°C |
| July | 74% | 26% | 11% | 27% | 28.3–34.2°C |
| August | 75% | 25% | 11% | 27% | 27.6–31.7°C |
| September | 65% | 24% | 10% | 25% | 22.6–27.1°C |
| October | 37% | 22% | 7% | 26% | 16.4–20.6°C |
| November | 6% | 19% | 6% | 16% | 6.2–12.5°C |
| December | <1% | 17% | 3% | 15% | -1.4–5.7°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