Harrisonburg, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harrisonburg, a village in Catahoula County, Louisiana.
Overnight
56°F
Patchy Fog
Patchy fog and a slight chance of rain showers before 5am. Mostly cloudy, with a low around 56. Northwest wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Harrisonburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Patchy Fog | 0 to 5 mph NW | 16% |
| Wednesday | 76°F | Patchy Fog then Mostly Sunny | 5 mph NNW | 0% |
| Wednesday Night | 46°F | Mostly Clear then Patchy Fog | 0 mph | 0% |
| Thursday | 78°F | Patchy Fog then Sunny | 0 to 5 mph NNE | 0% |
| Thursday Night | 49°F | Partly Cloudy | 0 mph | 1% |
| Friday | 79°F | Sunny | 0 to 10 mph NNE | 0% |
| Friday Night | 46°F | Partly Cloudy | 5 mph NNE | 0% |
| Saturday | 70°F | Mostly Sunny | 5 to 15 mph NNE | 0% |
| Saturday Night | 41°F | Mostly Cloudy | 5 to 10 mph NNE | 1% |
| Sunday | 67°F | Mostly Sunny | 5 to 10 mph N | 2% |
| Sunday Night | 38°F | Partly Cloudy | 0 to 5 mph N | 3% |
| Monday | 70°F | Sunny | 0 to 5 mph N | 3% |
| Monday Night | 39°F | Mostly Clear | 0 mph | 2% |
| Tuesday | 74°F | Sunny | 0 to 5 mph N | 2% |
Forecast source: National Weather Service (api.weather.gov) for Harrisonburg (31.768, -91.823). Updated through the day.
Growing snapshot for Harrisonburg
Last spring frost
Mar 6
First fall frost
Nov 22
Growing season
261 days
Hardiness zone
9a
More local growing data for Harrisonburg: nearby ZIP 71340 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Jonesville Locks, La (19.4 mi from Harrisonburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.