Slidell, LA
Climate overview — based on NOAA 1991-2020 normals from SLIDELL, LA US.
Year-round temperatures (°F)
Climate summary
Slidell has an annual average temperature of 67.6°F with about 66.2 inches of precipitation per year. The warmest month is August (average high 89.7°F), and the coldest is January (average low 41.6°F). July is typically the wettest month (7.68 in) and October the driest (4.17 in).
Best time to visit Slidell
Full guide →Climate change signal
All-time records →53 of 366 (14.5%) of Slidell's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1950s | 32 | |
| 1960s | 96 | |
| 1970s | 64 | |
| 1980s | 73 | |
| 1990s | 20 | |
| 2000s | 25 | |
| 2010s | 16 | |
| 2020s | 40 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 60.6°F | 41.6°F | 51.1°F | 5.92 in | — | 11 |
| February | 64.3°F | 45.0°F | 54.7°F | 4.39 in | — | 9 |
| March | 70.1°F | 51.6°F | 60.8°F | 5.26 in | 0.1 in | 9 |
| April | 76.1°F | 57.7°F | 66.9°F | 5.47 in | — | 8 |
| May | 83.0°F | 65.7°F | 74.4°F | 5.84 in | — | 8 |
| June | 88.2°F | 72.1°F | 80.1°F | 5.75 in | — | 11 |
| July | 89.6°F | 73.8°F | 81.7°F | 7.68 in | — | 14 |
| August | 89.7°F | 73.5°F | 81.6°F | 7.57 in | — | 14 |
| September | 86.7°F | 69.7°F | 78.2°F | 4.95 in | — | 10 |
| October | 79.3°F | 59.2°F | 69.2°F | 4.17 in | — | 7 |
| November | 69.7°F | 49.2°F | 59.5°F | 4.22 in | — | 8 |
| December | 63.0°F | 44.1°F | 53.5°F | 4.95 in | — | 10 |
Climate twins of Slidell
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).