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Will it freeze in St. Augustine in the next 7 nights?
No overnight lows at or below 32°F are forecast in St. Augustine during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 69°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 69°F Above 36°F · Partly Cloudy
- Fri, Nov 6 66°F Above 36°F · Slight Chance Rain Showers then Mostly Cloudy
- Sat, Nov 7 64°F Above 36°F · Mostly Clear
- Sun, Nov 8 63°F Above 36°F · Mostly Cloudy
- Mon, Nov 9 62°F Above 36°F · Slight Chance Rain Showers
- Tue, Nov 10 62°F Above 36°F · Slight Chance Rain Showers
- Wed, Nov 11 61°F Above 36°F · Slight Chance Rain Showers
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 St. Augustine
Most years have no 28°F hard freeze at St Augustine Lighthouse, according to NOAA’s 1991–2020 Climate Normals. Check the short-term forecast above during cold snaps.
| 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 | Jan 14 · Feb 17 · Mar 13 | Nov 27 · Dec 20 · Jan 20 | 304 days |
| 32°F freeze | Dec 31 · Feb 1 · Mar 3 | Dec 7 · Jan 5 · Feb 10 | 334 days |
| 28°F hard freeze | Dec 26 · Jan 25 · Feb 22 | Dec 16 · Jan 10 · Feb 13 | 365 days |
Average high temperature by month
1991–2020 normals at St Augustine Lighthouse
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 St. Augustine, FL come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: St Augustine Lighthouse (station USC00087826, elevation 12 ft), 1.6 mi from St. Augustine. 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 St. Augustine
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| St. Augustine Beach, FL | 4.3 mi | Feb 1 | Jan 5 |
| Green Cove Springs, FL | 23 mi | Feb 1 | Jan 5 |
| Palm Coast, FL | 25 mi | Jan 24 | Jan 11 |
| Jacksonville Beach, FL | 26 mi | Jan 31 | Jan 10 |
| Palatka, FL | 27 mi | Jan 31 | Jan 4 |
| Neptune Beach, FL | 29 mi | Jan 31 | Jan 10 |
| Orange Park, FL | 30 mi | Feb 1 | Jan 5 |
| Atlantic Beach, FL | 31 mi | Jan 31 | Jan 10 |
| Flagler Beach, FL | 31 mi | Jan 24 | Jan 11 |
| Jacksonville, FL | 37 mi | Feb 1 | Jan 5 |
Frequently asked questions
When is the last frost in St. Augustine?
On average, the last spring frost (32°F) in St. Augustine is around February 1. In about 1 year in 10 it comes after March 3, and in 9 years in 10 it comes after December 31.
When is the first frost in St. Augustine?
The first fall frost (32°F) usually arrives around January 5. There’s a 10% chance of a freeze by December 7 and a 90% chance by February 10.
Can it frost in St. Augustine 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 February 17.
What growing zone is St. Augustine?
St. Augustine is in USDA Plant Hardiness Zone 9b (average annual extreme minimum temperature 25 to 30°F), based on the 2023 USDA map for ZIP code 32084. See growing zones in Florida.
More: all Florida frost dates · Florida growing zones · frost vs. freeze