Houston/Bush Intl climate by month
Averages and records for each calendar month at Houston/Bush Intl, United States, from 1969 to 2026. The warmest month is August, averaging 34.7°C; the coolest is January at 17.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 17.0°C | 5.7°C | 29.4°C1 January 2022 | −11.1°C11 January 1982 | 57 / 57 |
| February | 19.3°C | 7.6°C | 32.8°C20 February 1986 | −10.5°C16 February 2021 | 57 / 57 |
| March | 23.2°C | 11.4°C | 32.8°C30 March 1989 | −5.6°C2 March 1980 | 57 / 57 |
| April | 26.4°C | 15.1°C | 35.0°C28 April 1987 | −0.6°C10 April 1973 | 57 / 57 |
| May | 30.0°C | 19.3°C | 37.2°C29 May 1996 | 5.6°C4 May 2013 | 57 / 57 |
| June | 33.1°C | 22.6°C | 41.7°C29 June 2013 | 11.1°C3 June 1970 | 58 / 58 |
| July | 34.4°C | 23.6°C | 40.6°C10 July 2022 | 16.7°C7 July 1972 | 58 / 58 |
| August | 34.7°C | 23.5°C | 42.8°C27 August 2011 | 15.6°C17 August 1992 | 58 / 58 |
| September | 32.1°C | 20.9°C | 42.8°C4 September 2000 | 8.9°C24 September 1975 | 57 / 58 |
| October | 27.9°C | 15.5°C | 37.2°C14 October 2024 | −1.7°C31 October 1993 | 57 / 57 |
| November | 22.4°C | 10.4°C | 31.7°C1 November 1978 | −7.2°C30 November 1976 | 57 / 57 |
| December | 18.6°C | 7.0°C | 29.4°C3 December 1995 | −13.9°C23 December 1989 | 57 / 57 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 57 to 58 years each.
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Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.