Lewisburg, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewisburg, a community in St. Tammany County, Louisiana.
Today
81°F
Patchy Fog then Mostly Sunny
Patchy fog and a slight chance of rain showers before 8am, then a chance of rain showers and patchy fog between 8am and noon. Mostly sunny. High near 81, with temperatures falling to around 77 in the afternoon. West wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lewisburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Patchy Fog then Mostly Sunny | 5 mph W | 27% |
| Tonight | 57°F | Mostly Clear then Patchy Fog | 5 mph N | 0% |
| Thursday | 80°F | Sunny | 0 to 5 mph S | 0% |
| Thursday Night | 61°F | Partly Cloudy | 0 to 5 mph NW | 3% |
| Friday | 80°F | Mostly Sunny | 5 mph N | 3% |
| Friday Night | 55°F | Mostly Clear | 5 to 10 mph N | 0% |
| Saturday | 75°F | Mostly Sunny | 10 mph N | 1% |
| Saturday Night | 49°F | Partly Cloudy | 5 to 10 mph N | 2% |
| Sunday | 68°F | Slight Chance Rain Showers then Mostly Sunny | 10 mph N | 15% |
| Sunday Night | 47°F | Partly Cloudy | 5 mph N | 5% |
| Monday | 71°F | Sunny | 5 mph N | 6% |
| Monday Night | 47°F | Mostly Clear | 0 to 5 mph N | 4% |
| Tuesday | 73°F | Sunny | 0 to 5 mph NE | 5% |
| Tuesday Night | 49°F | Partly Cloudy | 0 to 5 mph NE | 3% |
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 Nov 4, 2026.