Slidell, LA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Slidell, a city in St. Tammany County, Louisiana.

Tonight

71°F

Clear

Clear, with a low around 71. Northeast wind around 0 mph.

7-day forecast for Slidell

When	Temp	Forecast	Wind	Precip
Tonight	71°F	Clear	0 mph	0%
Saturday	95°F	Sunny	0 to 5 mph NE	2%
Saturday Night	74°F	Clear	0 to 5 mph SW	2%
Sunday	95°F	Sunny then Slight Chance Showers And Thunderstorms	0 to 5 mph NW	15%
Sunday Night	74°F	Slight Chance Showers And Thunderstorms then Mostly Clear	0 mph	15%
Monday	94°F	Mostly Sunny then Chance Showers And Thunderstorms	0 to 5 mph NE	39%
Monday Night	74°F	Chance Showers And Thunderstorms then Partly Cloudy	0 mph	39%
Tuesday	94°F	Sunny then Slight Chance Showers And Thunderstorms	0 to 5 mph NE	18%
Tuesday Night	73°F	Slight Chance Showers And Thunderstorms then Mostly Clear	0 to 5 mph N	18%
Wednesday	93°F	Sunny then Slight Chance Showers And Thunderstorms	0 to 5 mph NE	20%
Wednesday Night	72°F	Slight Chance Showers And Thunderstorms then Mostly Clear	0 to 5 mph NE	20%
Thursday	91°F	Sunny	5 to 10 mph NE	10%
Thursday Night	70°F	Mostly Clear	0 to 5 mph NE	10%
Friday	89°F	Sunny	5 to 10 mph NE	5%

Forecast source: National Weather Service (api.weather.gov) for Slidell (30.289, -89.783). Updated through the day.

Growing snapshot for Slidell

Last spring frost

Feb 24

First fall frost

Dec 1

Growing season

281 days

Hardiness zone

More local growing data for Slidell: nearby ZIP 70458 weather · frost dates · planting calendar · Louisiana frost dates

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Climate data from the nearest NOAA station, Slidell, La (1.5 mi from Slidell). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.