Opelousas, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Opelousas, a city in St. Landry County, Louisiana.
Tonight
61°F
Slight Chance Showers And Thunderstorms then Patchy Fog
A slight chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and 10pm, then patchy fog and showers and thunderstorms likely. Mostly cloudy, with a low around 61. West wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Opelousas
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Slight Chance Showers And Thunderstorms then Patchy Fog | 0 to 5 mph W | 62% |
| Wednesday | 74°F | Mostly Sunny | 0 to 5 mph NW | 4% |
| Wednesday Night | 50°F | Mostly Clear | 0 mph | 1% |
| Thursday | 77°F | Mostly Sunny | 0 mph | 4% |
| Thursday Night | 55°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 mph | 24% |
| Friday | 77°F | Mostly Sunny | 0 to 5 mph N | 7% |
| Friday Night | 50°F | Mostly Clear | 5 mph N | 1% |
| Saturday | 72°F | Mostly Sunny | 5 to 10 mph N | 3% |
| Saturday Night | 45°F | Partly Cloudy | 5 mph N | 10% |
| Sunday | 67°F | Mostly Sunny | 5 to 10 mph N | 5% |
| Sunday Night | 42°F | Mostly Clear | 0 to 5 mph N | 3% |
| Monday | 70°F | Sunny | 0 to 5 mph N | 3% |
| Monday Night | 42°F | Mostly Clear | 0 mph | 3% |
| Tuesday | 74°F | Sunny | 0 to 5 mph E | 1% |
Forecast source: National Weather Service (api.weather.gov) for Opelousas (30.525, -92.082). Updated through the day.
Growing snapshot for Opelousas
Last spring frost
Feb 28
First fall frost
Nov 23
Growing season
267 days
Hardiness zone
9a
More local growing data for Opelousas: nearby ZIP 70570 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Arnaudville
Cankton
Grand Coteau
Krotz Springs
Lawtell
Lebeau
Leonville
Melville
Morrow
Palmetto
Port Barre
Sunset
Washington
Climate data from the nearest NOAA station, Grand Coteau, La (8.7 mi from Opelousas). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.