Dallas, Texas weather in January

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

Average high

55°F

Average low

37°F

Rainy days

~7 per month

Total precipitation

3.2 in

Warmest recorded

80°F

Coldest recorded

11°F

Expect January days in Dallas, Texas to top out around 55°F and cool to about 37°F overnight, with roughly 7 days of measurable rain across the month. In recent years January has ranged from 11°F to 80°F.