Donaldsonville, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Donaldsonville, a city in Ascension County, Louisiana.
Today
95°F
Sunny
Sunny. High near 95, with temperatures falling to around 93 in the afternoon. Northwest wind around 0 mph.
7-day forecast for Donaldsonville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 95°F | Sunny | 0 mph | 9% |
| Tonight | 76°F | Mostly Clear | 0 mph | 7% |
| Wednesday | 96°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 27% |
| Wednesday Night | 75°F | Mostly Clear | 0 to 5 mph S | 9% |
| Thursday | 95°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SE | 38% |
| Thursday Night | 74°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph E | 38% |
| Friday | 94°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 27% |
| Friday Night | 75°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 27% |
| Saturday | 94°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 34% |
| Saturday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph E | 34% |
| Sunday | 93°F | Showers And Thunderstorms Likely | 0 to 5 mph E | 61% |
| Sunday Night | 75°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 61% |
| Monday | 93°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 72% |
| Monday Night | 75°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 72% |
Forecast source: National Weather Service (api.weather.gov) for Donaldsonville (30.095, -90.993). Updated through the day.
Growing snapshot for Donaldsonville
Last spring frost
Feb 21
First fall frost
Dec 5
Growing season
291 days
Hardiness zone
9a
More local growing data for Donaldsonville: nearby ZIP 70346 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Donaldsonville 4 Sw, La (2.4 mi from Donaldsonville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.