Port Gibson, MS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Port Gibson, a city in Claiborne County, Mississippi.
Today
94°F
Sunny
Sunny, with a high near 94. Heat index values as high as 99. North northwest wind 0 to 5 mph.
7-day forecast for Port Gibson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Sunny | 0 to 5 mph NNW | 0% |
| Tonight | 71°F | Clear | 0 to 5 mph NE | 0% |
| Wednesday | 95°F | Sunny | 0 to 5 mph NNW | 3% |
| Wednesday Night | 72°F | Mostly Clear | 0 mph | 3% |
| Thursday | 95°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 15% |
| Thursday Night | 73°F | Slight Chance Showers And Thunderstorms then Patchy Fog | 0 mph | 15% |
| Friday | 94°F | Patchy Fog then Sunny | 0 to 5 mph SE | 13% |
| Friday Night | 73°F | Mostly Clear | 0 mph | 13% |
| Saturday | 94°F | Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 19% |
| Saturday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 19% |
| Sunday | 94°F | Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 22% |
| Sunday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 22% |
| Monday | 94°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SE | 35% |
| Monday Night | 74°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 35% |
Forecast source: National Weather Service (api.weather.gov) for Port Gibson (31.956, -90.983). Updated through the day.
Growing snapshot for Port Gibson
Last spring frost
Mar 17
First fall frost
Nov 12
Growing season
241 days
Hardiness zone
8b
More local growing data for Port Gibson: nearby ZIP 39150 weather · frost dates · planting calendar · Mississippi frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Port Gibson 1 Ne, Ms (0.8 mi from Port Gibson). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.