St. Tammany Parish weather, town by town
11 places in St. Tammany Parish, Louisiana, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1893 to 2026. Station extremes, not official state records.
St. Tammany Parish Weather Facts
St. Tammany Parish has 11 places on myweatherrock (3 towns, 3 cities, 3 census-designated places, 2 villages), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 108°F at Slidell Ap on August 26, 2023. The coldest night is 7°F at Covington 8 Wnw on December 13, 1962. The wettest day brought 13.42 inches of rain at Slidell on May 10, 1995. The biggest single-day snow measured 5 inches at Covington 8 Wnw on December 29, 1901. Those are station measurements from NOAA's daily records, 1893 to 2026, not official state records. By area the largest place is Lacombe, about 26 square miles.
About St. Tammany Parish weather
The map on the Now tab shows every St. Tammany Parish town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 11 St. Tammany Parish towns with station normals, the warmest month is July, when the day usually reaches 91°F, and the coldest is January, when the night usually falls to 41°F. July is the wettest, with rain on about 13 days.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
St. Tammany Parish weather records
Measured at the NOAA stations serving these towns, daily records 1893 to 2026. Station extremes, not official state records.
Common questions about St. Tammany Parish weather
- What is the hottest temperature recorded at a St. Tammany Parish station?
- 108°F at Slidell Ap on August 26, 2023, in the NOAA daily station records myweatherrock holds (1893 to 2026).
- What is the coldest temperature recorded at a St. Tammany Parish station?
- 7°F at Covington 8 Wnw on December 13, 1962.
- What is the most rain a St. Tammany Parish station has measured in one day?
- 13.42 inches at Slidell on May 10, 1995.
- What is the biggest one-day snowfall at a St. Tammany Parish station?
- 5 inches at Covington 8 Wnw on December 29, 1901.
- How many St. Tammany Parish towns have a weather page here?
- 11: 3 towns, 3 cities, 3 census-designated places, 2 villages. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the St. Tammany Parish forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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