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Will it freeze in Key West in the next 7 nights?
No overnight lows at or below 32°F are forecast in Key West during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 76°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 76°F Above 36°F · Slight Chance Showers And Thunderstorms then Mostly Clear
- Fri, Nov 6 76°F Above 36°F · Mostly Clear
- Sat, Nov 7 75°F Above 36°F · Mostly Clear
- Sun, Nov 8 74°F Above 36°F · Slight Chance Showers And Thunderstorms
- Mon, Nov 9 74°F Above 36°F · Slight Chance Showers And Thunderstorms
- Tue, Nov 10 73°F Above 36°F · Slight Chance Rain Showers
- Wed, Nov 11 73°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 Key West
Most years have no 28°F hard freeze at Everglades, 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 2 · Jan 22 · Feb 27 | Dec 28 · Jan 14 · Feb 11 | 363 days |
| 32°F freeze | Jan 1 · Jan 16 · Feb 3 | Jan 1 · Jan 14 · Feb 1 | 365 days |
| 28°F hard freeze | rare in most years | rare in most years | 365 days |
Average high temperature by month
1991–2020 normals at Everglades
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 Key West, FL come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Everglades (station USC00082850, elevation 5 ft), 92 mi from Key West. 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 Key West
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Marathon, FL | 48 mi | rare | rare |
| Islamorada, Village of Islands, FL | 83 mi | rare | rare |
| Marco Island, FL | 94 mi | rare | rare |
| Florida City, FL | 102 mi | rare | rare |
| Homestead, FL | 104 mi | rare | rare |
| Naples, FL | 109 mi | rare | rare |
| Cutler Bay, FL | 114 mi | rare | rare |
| Palmetto Bay, FL | 117 mi | rare | rare |
| Pinecrest, FL | 119 mi | rare | rare |
| Sweetwater, FL | 121 mi | rare | rare |
Frequently asked questions
When is the last frost in Key West?
Key West doesn’t reach 32°F in a typical year, according to NOAA’s 1991–2020 normals for the nearest station.
When is the first frost in Key West?
Freezes are uncommon here; check the 7-night forecast above during cold snaps.
Can it frost in Key West 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 January 22.
What growing zone is Key West?
Key West is in USDA Plant Hardiness Zone 11b (average annual extreme minimum temperature 45 to 50°F), based on the 2023 USDA map for ZIP code 33040. See growing zones in Florida.
More: all Florida frost dates · Florida growing zones · frost vs. freeze