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Will it freeze in Slidell in the next 7 nights?
No overnight lows at or below 32°F are forecast in Slidell during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 56°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 56°F Above 36°F · Mostly Clear
- Fri, Nov 6 51°F Above 36°F · Mostly Clear
- Sat, Nov 7 45°F Above 36°F · Partly Cloudy
- Sun, Nov 8 45°F Above 36°F · Mostly Cloudy
- Mon, Nov 9 46°F Above 36°F · Partly Cloudy then Slight Chance Rain Showers
- Tue, Nov 10 47°F Above 36°F · Mostly Clear then Slight Chance Rain Showers
- Wed, Nov 11 48°F Above 36°F · Partly Cloudy
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Slidell
The median first fall hard-freeze date (28°F) is December 26, from NOAA’s 1991–2020 Climate Normals at Slidell. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Feb 18 · Mar 12 · Apr 2 | Nov 1 · Nov 16 · Dec 7 | 250 days |
| 32°F freeze | Jan 29 · Feb 24 · Mar 19 | Nov 9 · Dec 1 · Jan 3 | 281 days |
| 28°F hard freeze | Jan 4 · Feb 4 · Mar 6 | Nov 26 · Dec 26 · Jan 26 | 321 days |
Average high temperature by month
1991–2020 normals at Slidell
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Slidell, LA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Slidell (station USC00168539, elevation 10 ft), 1.8 mi from Slidell. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Slidell
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Picayune, MS | 18 mi | Mar 9 | Nov 18 |
| New Orleans, LA | 19 mi | Jan 22 | Jan 5 |
| Mandeville, LA | 20 mi | Mar 12 | Nov 18 |
| Waveland, MS | 23 mi | Feb 21 | Dec 3 |
| Covington, LA | 24 mi | Mar 12 | Nov 18 |
| Bay St. Louis, MS | 25 mi | Feb 21 | Dec 3 |
| Diamondhead, MS | 27 mi | Feb 21 | Dec 3 |
| Gretna, LA | 30 mi | Feb 1 | Dec 31 |
| Pass Christian, MS | 32 mi | Feb 18 | Dec 14 |
| Bogalusa, LA | 34 mi | Mar 2 | Nov 23 |
Frequently asked questions
When is the last frost in Slidell?
On average, the last spring frost (32°F) in Slidell is around February 24. In about 1 year in 10 it comes after March 19, and in 9 years in 10 it comes after January 29.
When is the first frost in Slidell?
The first fall frost (32°F) usually arrives around December 1. There’s a 10% chance of a freeze by November 9 and a 90% chance by January 3.
Can it frost in Slidell after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after March 12.
What growing zone is Slidell?
Slidell is in USDA Plant Hardiness Zone 9a (average annual extreme minimum temperature 20 to 25°F), based on the 2023 USDA map for ZIP code 70458. See growing zones in Louisiana.
More: all Louisiana frost dates · Louisiana growing zones · UV index today in Slidell · frost vs. freeze