Climate change in Portsmouth city, Virginia
Since 1979, Portsmouth city, Virginia has warmed 3.0°F, with 5 more days above 90°F, 27 more nights above 70°F and 7% more precipitation a year. Its climate in 1996–2025 is most like Hyde County, NC's was in 1951–1980.
- Average temperature: +3.0°F
- Summer highs (Jun–Aug): +1.6°F
- Winter lows (Dec–Feb): +3.5°F
- Precipitation: +7%
- Wettest day of the year: +4%
- Longest dry spell: −0 days
- Days above 90°F: +5 days
- Nights above 70°F: +27 days
- Freezing nights: −18 days
- Frost-free season: +5 days
- Muggy days: +24 days
- Summer heat index (Jun–Aug): +2.3°F
- Extreme fire-weather days: −5 days
- Snowfall: −42%
- Snowy days (1 inch or more): −0 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.