Hattiesburg, MS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hattiesburg, a city in Forrest County, Mississippi.
This Afternoon
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 104. Northeast wind 0 to 5 mph.
7-day forecast for Hattiesburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Sunny | 0 to 5 mph NE | 0% |
| Tonight | 73°F | Mostly Clear | 0 to 5 mph SW | 4% |
| Sunday | 97°F | Sunny | 0 to 5 mph NNW | 10% |
| Sunday Night | 73°F | Mostly Clear | 0 mph | 5% |
| Monday | 96°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph NNE | 28% |
| Monday Night | 72°F | Chance Showers And Thunderstorms | 0 mph | 28% |
| Tuesday | 96°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 21% |
| Tuesday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph E | 21% |
| Wednesday | 94°F | Sunny | 0 to 10 mph NNE | 6% |
| Wednesday Night | 70°F | Mostly Clear | 0 to 5 mph NNE | 6% |
| Thursday | 91°F | Sunny | 5 to 10 mph NNE | 4% |
| Thursday Night | 68°F | Mostly Clear | 0 to 10 mph NNE | 4% |
| Friday | 90°F | Mostly Sunny | 5 to 10 mph NNE | 2% |
| Friday Night | 67°F | Partly Cloudy | 0 to 5 mph NNE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Hattiesburg (31.307, -89.317). Updated through the day.
Growing snapshot for Hattiesburg
Last spring frost
Mar 7
First fall frost
Nov 23
Growing season
261 days
Hardiness zone
8b
More local growing data for Hattiesburg: nearby ZIP 39406 weather · frost dates · planting calendar · Mississippi frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Hattiesburg 5Sw, Ms (5.1 mi from Hattiesburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.