Dallas, Texas weather in December

Averages from 2021–2025 (155 days of record).

Average high: 63°F
Average low: 46°F
Rainy days: ~7 per month
Total precipitation: 2.8 in
Warmest recorded: 84°F
Coldest recorded: 12°F

Expect December days in Dallas, Texas to top out around 63°F and cool to about 46°F overnight, with roughly 7 days of measurable rain across the month. In recent years December has ranged from 12°F to 84°F.

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Current Dallas, Texas forecast → · Historical data by Open-Meteo (ERA5).