Unlock Historical Data
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
05:08
Sunrise
20:15
Sunset
Daily Forecast
Tuesday
Today
Thursday
Friday
Saturday
Sunday
Monday
Air Quality Data Available
Upgrade to access real-time air quality data for Portsmouth.
Resources
UV Index
Humidity
Frequently asked questions about weather in Portsmouth
How warm does it get in Portsmouth?
The warmest month in Portsmouth is July, with average high temperatures of 27°C. The average temperature during this period is around 23°C.
How cold does it get in Portsmouth?
The coldest month in Portsmouth is February, with average low temperatures of -5°C. The average temperature during this period is around -2°C.
What is the wettest time of year in Portsmouth?
The wettest month in Portsmouth is December, with an average of 129mm of precipitation.
What is the driest time of year in Portsmouth?
The driest month in Portsmouth is May, with an average of 66mm of precipitation.
Explore more weather forecasts
- Dover, New Hampshire
- New York City, New York
- Durham, New Hampshire
- Los Angeles, California
- Somersworth, New Hampshire
- Brooklyn, New York
- Rochester, New Hampshire
- Chicago, Illinois
- Salem, New Hampshire
- Houston, Texas
- Derry Village, New Hampshire
- Queens, New York
- Derry, New Hampshire
- Phoenix, Arizona
- Windham, New Hampshire
- Philadelphia, Pennsylvania
