St. James, LA Weather & Growing Conditions
Today
93°F
Sunny
Sunny. High near 93, with temperatures falling to around 91 in the afternoon. East wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Sunny | 5 mph E | 2% |
| Tonight | 72°F | Clear | 0 mph | 2% |
| Sunday | 95°F | Sunny | 0 mph | 11% |
| Sunday Night | 74°F | Mostly Clear | 0 mph | 7% |
| Monday | 94°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 20% |
| Monday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 20% |
| Tuesday | 95°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 18% |
| Tuesday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 18% |
| Wednesday | 94°F | Sunny | 0 to 5 mph NE | 8% |
| Wednesday Night | 73°F | Mostly Clear | 0 mph | 8% |
| Thursday | 91°F | Sunny | 5 mph NE | 6% |
| Thursday Night | 71°F | Mostly Clear | 0 to 5 mph NE | 6% |
| Friday | 90°F | Sunny | 5 mph NE | 4% |
| Friday Night | 70°F | Mostly Clear | 0 to 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. James, LA
Last spring frost
Feb 21
First fall frost
Dec 5
Growing season
291 days
Hardiness zone
9a
Explore more for St. James, LA: full frost dates · planting calendar · Louisiana frost dates
Climate data from the nearest NOAA station, Donaldsonville 4 Sw, La (10 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.