Donaldsonville, LA Weather & Growing Conditions
Today
79°F
Patchy Fog then Mostly Sunny
Patchy fog and a slight chance of rain showers before 9am. Mostly sunny. High near 79, with temperatures falling to around 75 in the afternoon. Northwest wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Patchy Fog then Mostly Sunny | 5 mph NW | 16% |
| Tonight | 54°F | Mostly Clear then Patchy Fog | 0 to 5 mph N | 0% |
| Thursday | 80°F | Sunny | 0 mph | 0% |
| Thursday Night | 60°F | Partly Cloudy | 0 mph | 5% |
| Friday | 79°F | Mostly Sunny | 0 to 5 mph N | 5% |
| Friday Night | 54°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 75°F | Mostly Sunny | 5 mph NE | 1% |
| Saturday Night | 49°F | Partly Cloudy | 5 mph N | 3% |
| Sunday | 68°F | Slight Chance Rain Showers | 5 mph N | 15% |
| Sunday Night | 45°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 15% |
| Monday | 70°F | Sunny | 0 to 5 mph N | 5% |
| Monday Night | 45°F | Mostly Clear | 0 mph | 5% |
| Tuesday | 73°F | Sunny | 0 to 5 mph NE | 4% |
| Tuesday Night | 47°F | Mostly Clear | 0 mph | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Donaldsonville, LA
Last spring frost
Feb 21
First fall frost
Dec 5
Growing season
291 days
Hardiness zone
9a
Explore more for Donaldsonville, LA: full frost dates · planting calendar · Louisiana frost dates
Climate data from the nearest NOAA station, Donaldsonville 4 Sw, La (2.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.