Prospect, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Prospect, a community in Grant County, Louisiana.
Tonight
54°F
Chance Rain Showers then Mostly Cloudy
A chance of rain showers before midnight. Mostly cloudy, with a low around 54. Northwest wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Prospect
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Chance Rain Showers then Mostly Cloudy | 0 to 5 mph NW | 31% |
| Wednesday | 75°F | Mostly Sunny | 5 mph NW | 0% |
| Wednesday Night | 48°F | Mostly Clear | 0 mph | 0% |
| Thursday | 78°F | Sunny | 0 mph | 4% |
| Thursday Night | 53°F | Partly Cloudy | 0 mph | 11% |
| Friday | 78°F | Mostly Sunny | 0 to 5 mph NW | 1% |
| Friday Night | 47°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 72°F | Partly Sunny | 5 to 10 mph N | 2% |
| Saturday Night | 42°F | Partly Cloudy | 0 to 5 mph N | 11% |
| Sunday | 70°F | Mostly Sunny | 5 to 10 mph N | 5% |
| Sunday Night | 40°F | Mostly Clear | 0 to 5 mph N | 2% |
| Monday | 72°F | Sunny | 0 to 5 mph N | 1% |
| Monday Night | 40°F | Clear | 0 mph | 2% |
| Tuesday | 76°F | Sunny | 0 to 5 mph SE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Prospect (31.446, -92.496). Updated through the day.
Growing snapshot for Prospect
Last spring frost
Mar 2
First fall frost
Nov 17
Growing season
260 days
Hardiness zone
9a
More local growing data for Prospect: nearby ZIP 71407 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Alexandria Intl Ap, La (13.3 mi from Prospect). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.