Hattiesburg, MS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hattiesburg, a city in Forrest County, Mississippi.
Tonight
65°F
Mostly Cloudy then Areas Of Fog
Areas of fog after 2am. Mostly cloudy, with a low around 65. South wind 0 to 5 mph.
7-day forecast for Hattiesburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Mostly Cloudy then Areas Of Fog | 0 to 5 mph S | 14% |
| Wednesday | 82°F | Areas Of Fog | 0 to 5 mph SW | 42% |
| Wednesday Night | 53°F | Partly Cloudy then Patchy Fog | 0 mph | 1% |
| Thursday | 83°F | Mostly Sunny | 0 to 5 mph WNW | 5% |
| Thursday Night | 53°F | Partly Cloudy then Slight Chance Rain Showers | 0 mph | 15% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph NNW | 7% |
| Friday Night | 47°F | Partly Cloudy | 5 mph N | 1% |
| Saturday | 75°F | Mostly Sunny | 5 to 10 mph N | 3% |
| Saturday Night | 41°F | Partly Cloudy | 5 mph N | 8% |
| Sunday | 70°F | Mostly Sunny | 5 to 10 mph N | 9% |
| Sunday Night | 38°F | Mostly Clear | 0 to 5 mph N | 3% |
| Monday | 73°F | Sunny | 5 to 10 mph N | 2% |
| Monday Night | 38°F | Mostly Clear | 0 to 5 mph N | 2% |
| Tuesday | 76°F | Sunny | 0 to 5 mph ENE | 3% |
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 Nov 4, 2026.