Dallas, Texas weather in May

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

Average high: 83°F
Average low: 66°F
Rainy days: ~14 per month
Total precipitation: 8.6 in
Warmest recorded: 101°F
Coldest recorded: 51°F

Expect May days in Dallas, Texas to top out around 83°F and cool to about 66°F overnight, with roughly 14 days of measurable rain across the month. In recent years May has ranged from 51°F to 101°F.

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