Whether you're visiting New Hampshire in the United States of America during the peak of July (27°C (81°F)) or the cooler months around January (1°C (34°F)), knowing what to pack starts with understanding the local climate. Our overview is based on data from Portsmouth, the region's most prominent city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
In New Hampshire, the months of May, June, August and September bring pleasant weather, with average temperatures ranging between 19°C (66°F) and 26°C (79°F).
The coldest months generally fall in January, February, March and December.
Precipitation in New Hampshire shows some seasonal variation. You'll find the most rain in June (139 mm (5.5 in)), while January tends to be drier (85 mm (3.3 in)).
For those seeking sunshine, July usually has the brightest skies, making it an excellent time for exploring the region.
