Portsmouth, VA Weather & Growing Conditions
Today
79°F
Mostly Sunny
Mostly sunny. High near 79, with temperatures falling to around 73 in the afternoon. South wind 6 to 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Mostly Sunny | 6 to 9 mph S | 1% |
| Tonight | 62°F | Mostly Cloudy | 7 mph S | 1% |
| Thursday | 81°F | Mostly Cloudy | 5 to 12 mph S | 9% |
| Thursday Night | 66°F | Mostly Cloudy then Chance Showers And Thunderstorms | 8 mph S | 34% |
| Friday | 76°F | Showers And Thunderstorms | 7 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 | 11% |
| Saturday Night | 46°F | Partly Cloudy | 6 mph NW | 7% |
| Sunday | 63°F | Sunny | 7 mph NW | 1% |
| Sunday Night | 45°F | Mostly Clear | 6 mph W | 7% |
| Monday | 63°F | Sunny | 7 to 10 mph NW | 7% |
| Monday Night | 43°F | Mostly Clear | 5 mph W | 2% |
| Tuesday | 65°F | Sunny | 3 to 9 mph SW | 1% |
| Tuesday Night | 46°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
8b
Explore more for Portsmouth, VA: full frost dates · planting calendar · Virginia frost dates
Climate data from the nearest NOAA station, Norfolk S, Va (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.