Dover (NH) Weather & Climate: Best Time to Visit

In Dover, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 28°C (82°F) in July to a very cold 1°C (34°F) in the coolest month, January.

Nights vary from 16°C (61°F) in July to around -9°C (16°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Dover experiences significant rain/snowfall throughout the year, averaging 1221 mm (48 in) of precipitation annually. Dover offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month June (127 mm (5 in)) and the driest month January (72 mm (2.8 in)) is not too significant. For more details, please visit our Dover Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

For those who appreciate different seasons, Dover serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 9.8 hours of sunshine daily, and embrace the darker days in November, offering only 4.2 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Dover.

The city experiences its highest humidity in September, reaching 76%. In April, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year