Weather In Houston December 2025. Daily high temperatures decrease by 5°f, from 68°f to 64°f, rarely falling below 49°f or exceeding 79°f. Weather.com brings you the most accurate monthly weather forecast for houston, tx with average/record and high/low temperatures, precipitation and more.
November 2024 to october 2025 winter will be warmer than normal, with the coldest periods in late january and early and late february. In general, the average temperature in houston at the beginning of december is 70 °f.
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