Patterson, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Patterson, a city in St. Mary County, Louisiana.
This Afternoon
83°F
Mostly Sunny
Mostly sunny. High near 83, with temperatures falling to around 78 in the afternoon. South wind 5 to 10 mph.
7-day forecast for Patterson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 83°F | Mostly Sunny | 5 to 10 mph S | 3% |
| Tonight | 68°F | Patchy Fog | 0 mph | 16% |
| Wednesday | 79°F | Mostly Sunny | 0 to 5 mph NW | 11% |
| Wednesday Night | 57°F | Mostly Clear | 0 mph | 1% |
| Thursday | 80°F | Sunny | 0 to 5 mph NW | 7% |
| Thursday Night | 61°F | Mostly Cloudy then Chance Showers And Thunderstorms | 0 mph | 32% |
| Friday | 79°F | Chance Rain Showers then Partly Sunny | 0 to 5 mph N | 38% |
| Friday Night | 56°F | Partly Cloudy | 0 to 5 mph N | 6% |
| Saturday | 75°F | Partly Sunny | 5 mph N | 9% |
| Saturday Night | 50°F | Slight Chance Rain Showers | 5 mph N | 16% |
| Sunday | 69°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 10 mph N | 15% |
| Sunday Night | 47°F | Mostly Clear | 5 mph N | 4% |
| Monday | 71°F | Sunny | 5 mph N | 5% |
| Monday Night | 47°F | Mostly Clear | 0 mph | 2% |
Forecast source: National Weather Service (api.weather.gov) for Patterson (29.691, -91.310). Updated through the day.
Growing snapshot for Patterson
Last spring frost
Jan 30
First fall frost
Jan 1
Growing season
335 days
Hardiness zone
9b
More local growing data for Patterson: nearby ZIP 70392 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Morgan City, La (8.6 mi from Patterson). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.