Transit Desk

Climate

Weather in United States in May

Weather in United States, May
In May, United States sees average highs of 23.7°C (75°F) and lows of 13.1°C (56°F), with around 139 mm of rain. It is one of the best months to visit.

United States — May

United States May
Daytime high
23.7°C (75°F)
Overnight low
13.1°C (56°F)
Rainfall
139 mm
Best-time rank
Recommended month

How May compares

United States, May vs. the annual average (2025)
This month23.7°C (75°F) / 13.1°C (56°F) · 139 mm
Yearly average19.5°C (67°F) / 9.7°C (49°F) · 108 mm

May in United States runs 4.2°C (7.6°F) warmer than the yearly average, and is wetter than the yearly average. Pack layers you can adjust through the day — mild conditions, and something waterproof — this is a wetter month.

Common questions

What is the weather like in United States in May?

Average highs of 23.7°C (75°F) and lows of 13.1°C (56°F), with around 139 mm of rain.

Is May a good time to visit United States?

Yes — May is one of the more comfortable months in United States, based on temperature and rainfall.

Updated climate normals, 2025