How extreme does Slidell's weather get?

The hottest, coldest, wettest and snowiest days Slidell has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 50+ years of daily weather observations (1971–present), from the Slidell station 2 km away. Updated through June 2026 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Slidell has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

102°F Jul 16, 1980

That is about 12°F hotter than a normal July afternoon in Slidell (typical high near 90°F).

The three most extreme on record

1 102°F Jul 16, 1980

2 102°F Jul 29, 1986

3 101°F Aug 23, 1980

❄️ Coldest night

8°F Jan 21, 1985

About 34°F colder than a normal January night in Slidell (typical low near 42°F).

The three most extreme on record

1 8°F Jan 21, 1985

2 9°F Dec 23, 1989

3 10°F Jan 11, 1982

🌧️ Most rain in one day

13.42 in May 10, 1995

More rain in a single day than Slidell usually gets in the whole month of May (typical May total about 5.8 in).

The three most extreme on record

1 13.42 in May 10, 1995

2 10.00 in Aug 30, 2021

3 9.45 in May 9, 1995

⛄ Most snow in one day

2.0 in Feb 9, 1973

The three most extreme on record

1 2.0 in Feb 9, 1973

2 2.0 in Feb 5, 1988

3 2.0 in Mar 12, 1993

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

normal range of daily temperatureshottest ever recordedcoldest ever recorded

Slidell's record heat sits well above even a hot day for the season — July's 102°F is about 12°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Slidell's warmest days reach the low 90s°F and its coldest nights drop to the low 40s°F. But across the record it has gone as high as 102°F and as low as 8°F. A single day has delivered over 13 inches of rain or close to 2 inches of snow. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Slidell (NOAA GHCN station USC00168539), about 2 km from the city centre.

How we build these numbers →

← Slidell city detail