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Will it freeze in Irondale in the next 7 nights?
No overnight lows at or below 32°F are forecast in Irondale during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 50°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 50°F Above 36°F · Mostly Cloudy
- Fri, Nov 6 45°F Above 36°F · Mostly Clear
- Sat, Nov 7 38°F Above 36°F · Mostly Clear
- Sun, Nov 8 39°F Above 36°F · Partly Cloudy
- Mon, Nov 9 41°F Above 36°F · Partly Cloudy
- Tue, Nov 10 43°F Above 36°F · Partly Cloudy
- Wed, Nov 11 44°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 Irondale
The median first fall hard-freeze date (28°F) is November 24, from NOAA’s 1991–2020 Climate Normals at Birmingham Airport. 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 | Mar 16 · Apr 3 · Apr 20 | Oct 21 · Nov 2 · Nov 17 | 212 days |
| 32°F freeze | Feb 28 · Mar 21 · Apr 8 | Oct 30 · Nov 11 · Dec 1 | 236 days |
| 28°F hard freeze | Feb 14 · Mar 7 · Mar 26 | Nov 6 · Nov 24 · Dec 15 | 262 days |
Average high temperature by month
1991–2020 normals at Birmingham Airport
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 Irondale, AL come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Birmingham Airport (station USW00013876, elevation 615 ft), 5.3 mi from Irondale. 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 Irondale
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Leeds, AL | 5.0 mi | Mar 21 | Nov 11 |
| Mountain Brook, AL | 5.6 mi | Mar 21 | Nov 11 |
| Vestavia Hills, AL | 6.8 mi | Mar 21 | Nov 11 |
| Tarrant, AL | 7.5 mi | Mar 21 | Nov 11 |
| Center Point, AL | 7.5 mi | Apr 4 | Nov 1 |
| Birmingham, AL | 8.1 mi | Mar 21 | Nov 11 |
| Trussville, AL | 9.9 mi | Apr 4 | Nov 1 |
| Fultondale, AL | 9.9 mi | Mar 21 | Nov 11 |
| Homewood, AL | 11 mi | Mar 21 | Nov 11 |
| Moody, AL | 11 mi | Apr 4 | Nov 1 |
Frequently asked questions
When is the last frost in Irondale?
On average, the last spring frost (32°F) in Irondale is around March 21. In about 1 year in 10 it comes after April 8, and in 9 years in 10 it comes after February 28.
When is the first frost in Irondale?
The first fall frost (32°F) usually arrives around November 11. There’s a 10% chance of a freeze by October 30 and a 90% chance by December 1.
Can it frost in Irondale 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 April 3.
What growing zone is Irondale?
Irondale is in USDA Plant Hardiness Zone 8a (average annual extreme minimum temperature 10 to 15°F), based on the 2023 USDA map for ZIP code 35210. See growing zones in Alabama.
More: all Alabama frost dates · Alabama growing zones · frost vs. freeze