Average monthly temperatures

The climate of the USA varies hugely by location with a range of different climate zones.
The best time to visit the USA is usually between June and September except for the warmer sub tropical and desert regions like Florida, California and Las Vegas, where spring and autumn usually offer the best conditions.
The hottest month of the year is July with an average daily maximum of 30 C and an average low of 21 C.
The coolest month of the year is January with an average daily maximum of 4 C and an average low of -3 C.

Sunshine and rainfall

The driest month is September with 20 mm of rainfall and 27 perfect sunny days. The wettest month is January with 39 mm of rain over 4 days.

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