Tucson, Arizona weather in May

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

Average high: 93°F
Average low: 64°F
Rainy days: ~1 per month
Total precipitation: 0.1 in
Warmest recorded: 104°F
Coldest recorded: 52°F

Expect May days in Tucson, Arizona to top out around 93°F and cool to about 64°F overnight, with roughly 1 days of measurable rain across the month. In recent years May has ranged from 52°F to 104°F.

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Current Tucson, Arizona forecast → · Historical data by Open-Meteo (ERA5).