St. Joseph, LA Weather & Growing Conditions
Tonight
59°F
Showers And Thunderstorms
Showers and thunderstorms before 3am. Mostly cloudy, with a low around 59. West wind 0 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Showers And Thunderstorms | 0 to 5 mph W | 89% |
| Wednesday | 75°F | Mostly Sunny | 0 to 5 mph NW | 1% |
| Wednesday Night | 48°F | Partly Cloudy then Patchy Fog | 0 mph | 0% |
| Thursday | 78°F | Mostly Sunny | 0 mph | 2% |
| Thursday Night | 51°F | Partly Cloudy | 0 mph | 5% |
| Friday | 77°F | Mostly Sunny | 0 to 10 mph NNW | 2% |
| Friday Night | 44°F | Mostly Clear | 5 mph N | 1% |
| Saturday | 70°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Saturday Night | 40°F | Partly Cloudy | 0 to 5 mph N | 7% |
| Sunday | 68°F | Mostly Sunny | 5 to 10 mph N | 5% |
| Sunday Night | 38°F | Mostly Clear | 0 to 5 mph N | 0% |
| Monday | 71°F | Sunny | 0 to 5 mph N | 0% |
| Monday Night | 39°F | Clear | 0 mph | 2% |
| Tuesday | 74°F | Sunny | 0 to 5 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Joseph, LA
Last spring frost
Mar 13
First fall frost
Nov 10
Growing season
242 days
Hardiness zone
8b
Explore more for St. Joseph, LA: full frost dates · planting calendar · Louisiana frost dates
Climate data from the nearest NOAA station, St Joseph 3 N, La (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.