When is the best time to visit United States?

April, May and October. Across United States's 142 destinations, May averages 83/100 for climate comfort with mean highs of 20.3°C and 73 mm of rain.

What is the worst month to visit United States?

January, averaging 63/100 — mean highs of 6.8°C and 83 mm of rain across the country's destinations.

What is the hottest month in United States?

July, with mean daily highs of 28°C averaged across 142 destinations.

What is the wettest month in United States?

December, averaging 93 mm of rain.

Best time to visit United States

The best time to visit United States is April, May and October, when its 142 destinations average 83/100 for climate comfort — January is the weakest month, at 63/100.

Updated September 2026 · averaged over 142 United States destinations · climate normals from ERA5 reanalysis

United States climate comfort by month

Month	Comfort	Avg high	Rain	Pick of the month
January	63	6.8°C	83 mm	Mammoth Lakes 89
February	67	7.7°C	80 mm	Mammoth Lakes 92
March	75	11.5°C	83 mm	Mammoth Lakes 97
April	82	15.9°C	70 mm	Death Valley National Park 98
May	83	20.3°C	73 mm	Los Angeles 96
June	78	25.1°C	68 mm	Portland 96
July	72	28°C	70 mm	Redwood National Park 97
August	74	27.4°C	75 mm	San Francisco 98
September	80	24.4°C	70 mm	San Francisco 97
October	81	18.4°C	71 mm	Canyonlands National Park 95
November	74	12.2°C	66 mm	Palm Springs 95
December	64	8.2°C	93 mm	Big Bend National Park 90

Comfort is SeasonMap's 0–100 score, averaged across every United States destination in the dataset. Each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. Averages from ERA5 reanalysis normals, not forecasts.

All 142 destinations in United States

United States — FAQ

When is the best time to visit United States?: April, May and October. Across United States's 142 destinations, May averages 83/100 for climate comfort with mean highs of 20.3°C and 73 mm of rain.
What is the worst month to visit United States?: January, averaging 63/100 — mean highs of 6.8°C and 83 mm of rain across the country's destinations.
What is the hottest month in United States?: July, with mean daily highs of 28°C averaged across 142 destinations.
What is the wettest month in United States?: December, averaging 93 mm of rain.

Where else to go in May

Best places in April →Best places in May →Best places in October →All countries →