Portsmouth, VA Weather & Growing Conditions
Today
78°F
Mostly Sunny
Mostly sunny, with a high near 78. Southeast wind 5 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Mostly Sunny | 5 to 8 mph SE | 1% |
| Tonight | 62°F | Mostly Cloudy | 7 mph SE | 1% |
| Thursday | 80°F | Mostly Cloudy | 5 to 10 mph S | 10% |
| Thursday Night | 66°F | Mostly Cloudy then Chance Showers And Thunderstorms | 8 mph S | 36% |
| Friday | 76°F | Showers And Thunderstorms | 6 to 12 mph S | 95% |
| Friday Night | 57°F | Showers And Thunderstorms | 2 to 7 mph W | 95% |
| Saturday | 67°F | Mostly Sunny | 8 mph NW | 10% |
| Saturday Night | 49°F | Mostly Clear | 7 mph NW | 7% |
| Sunday | 62°F | Sunny | 5 to 8 mph NW | 1% |
| Sunday Night | 47°F | Mostly Clear | 3 to 7 mph W | 7% |
| Monday | 62°F | Sunny | 7 to 10 mph NW | 7% |
| Monday Night | 45°F | Mostly Clear | 5 mph W | 2% |
| Tuesday | 64°F | Sunny | 6 to 10 mph SW | 1% |
| Tuesday Night | 48°F | Mostly Clear | 7 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Portsmouth, VA
Last spring frost
Mar 23
First fall frost
Nov 16
Growing season
239 days
Hardiness zone
8a
Explore more for Portsmouth, VA: full frost dates · planting calendar · Virginia frost dates
Climate data from the nearest NOAA station, Norfolk S, Va (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.