Portsmouth, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portsmouth, a city in Portsmouth City County, Virginia.
Today
83°F
Showers And Thunderstorms Likely
A chance of rain showers between 11am and 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 83. East wind 3 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Portsmouth
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Showers And Thunderstorms Likely | 3 to 7 mph E | 72% |
| Tonight | 74°F | Showers And Thunderstorms Likely | 6 mph SE | 61% |
| Wednesday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 6 to 9 mph S | 44% |
| Wednesday Night | 76°F | Chance Showers And Thunderstorms then Partly Cloudy | 8 mph S | 51% |
| Thursday | 90°F | Sunny then Slight Chance Showers And Thunderstorms | 10 mph SW | 23% |
| Thursday Night | 76°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 10 mph S | 23% |
| Friday | 90°F | Mostly Sunny | 8 to 12 mph SW | 13% |
| Friday Night | 75°F | Partly Cloudy | 10 mph SW | 13% |
| Saturday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 10 mph SW | 17% |
| Saturday Night | 75°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 9 mph SW | 17% |
| Sunday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 8 mph SW | 23% |
| Sunday Night | 75°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 mph SW | 23% |
| Monday | 91°F | Mostly Sunny | 8 mph SW | 13% |
| Monday Night | 76°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 15% |
Forecast source: National Weather Service (api.weather.gov) for Portsmouth (36.859, -76.357). Updated through the day.
Growing snapshot for Portsmouth
Last spring frost
Mar 23
First fall frost
Nov 16
Growing season
239 days
Hardiness zone
8b
More local growing data for Portsmouth: nearby ZIP 23707 weather · frost dates · planting calendar · Virginia frost dates
Climate data from the nearest NOAA station, Norfolk S, Va (6.5 mi from Portsmouth). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.