Houston/Sugar Land Rgnl climate by month
Averages and records for each calendar month at Houston/Sugar Land Rgnl, United States, from 1893 to 2026. The warmest month is August, averaging 34.5°C; the coolest is January at 17.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 17.2°C | 5.7°C | 31.1°C18 January 1906 | −14.4°C31 January 1949 | 96 / 113 |
| February | 19.0°C | 7.2°C | 32.8°C29 February 1940 | −12.8°C1 February 1949 | 92 / 114 |
| March | 22.6°C | 10.7°C | 35.6°C30 March 1946 | −6.1°C3 March 1980 | 103 / 115 |
| April | 26.4°C | 15.1°C | 35.0°C2 April 1939 | 0.0°C8 April 1911 | 101 / 116 |
| May | 29.9°C | 18.9°C | 40.0°C22 May 1899 | 5.0°C12 May 1910 | 100 / 114 |
| June | 33.0°C | 22.1°C | 41.1°C24 June 1899 | 10.6°C1 June 1930 | 96 / 113 |
| July | 34.2°C | 23.1°C | 41.1°C25 July 1934 | 15.0°C3 July 1910 | 99 / 112 |
| August | 34.5°C | 23.0°C | 42.2°C3 August 1899 | 15.6°C13 August 1967 | 94 / 111 |
| September | 32.2°C | 20.6°C | 42.2°C5 September 2000 | 6.1°C27 September 1942 | 93 / 110 |
| October | 28.4°C | 15.4°C | 37.8°C14 October 2024 | −2.2°C30 October 1917 | 93 / 107 |
| November | 22.6°C | 10.1°C | 34.4°C4 November 1934 | −5.6°C29 November 1976 | 90 / 107 |
| December | 18.5°C | 6.6°C | 32.2°C14 December 1948 | −14.4°C23 December 1989 | 91 / 114 |
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 90 to 103 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.