Lewisburg, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewisburg, a community in St. Tammany County, Louisiana.
Today
94°F
Sunny
Sunny. High near 94, with temperatures falling to around 92 in the afternoon. West wind 0 to 5 mph.
7-day forecast for Lewisburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Sunny | 0 to 5 mph W | 9% |
| Tonight | 78°F | Mostly Clear | 0 to 5 mph SW | 6% |
| Wednesday | 94°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 21% |
| Wednesday Night | 78°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SW | 22% |
| Thursday | 93°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 23% |
| Thursday Night | 77°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SE | 23% |
| Friday | 92°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph E | 18% |
| Friday Night | 77°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph E | 18% |
| Saturday | 91°F | Chance Showers And Thunderstorms | 0 to 10 mph E | 25% |
| Saturday Night | 78°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 25% |
| Sunday | 91°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 45% |
| Sunday Night | 78°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 45% |
| Monday | 91°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 46% |
| Monday Night | 78°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 46% |
Forecast source: National Weather Service (api.weather.gov) for Lewisburg (30.368, -90.102). Updated through the day.
Growing snapshot for Lewisburg
Last spring frost
Mar 12
First fall frost
Nov 18
Growing season
253 days
Hardiness zone
9a
More local growing data for Lewisburg: nearby ZIP 70471 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Abita Springs
Covington
Eden Isle
Folsom
Lacombe
Madisonville
Mandeville
Pearl River
Rio
Slidell
Sun
Climate data from the nearest NOAA station, Covington 4 Nnw, La (9 mi from Lewisburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.