Frost dates 2026–2027

Frost dates for Dunedin, Florida

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Tarpon Springs Sewage Plt, 8.3 mi away (close match).

Last spring frostJan 20
First fall frostJan 9
354 frost-free days
Last spring frostJan 201 year in 10 after Feb 14
First fall frostJan 91 year in 10 by Dec 16
Growing season354 daysbetween median 32°F dates
Hardiness zoneZone 10a30 to 35°F average extreme low

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Will it freeze in Dunedin in the next 7 nights?

No overnight lows at or below 32°F are forecast in Dunedin during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 71°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.

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 Dunedin

Most years have no 28°F hard freeze at Tarpon Springs Sewage Plt, according to NOAA’s 1991–2020 Climate Normals. Check the short-term forecast above during cold snaps.

TemperatureLast 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 1 · Jan 31 · Mar 1 Dec 3 · Dec 31 · Jan 27 326 days
32°F freeze Dec 29 · Jan 20 · Feb 14 Dec 16 · Jan 9 · Feb 4 354 days
28°F hard freeze Dec 29 · Jan 15 · Feb 5 Dec 24 · Jan 13 · Feb 1 365 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00088824. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Tarpon Springs Sewage Plt

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 Dunedin, FL come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Tarpon Springs Sewage Plt (station USC00088824, elevation 6 ft), 8.3 mi from Dunedin. 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 Dunedin

CityDistanceLast spring frostFirst fall frost
Clearwater, FL 4.3 mi rare rare
Safety Harbor, FL 6.2 mi rare rare
Oldsmar, FL 7.5 mi Jan 20 Jan 9
Tarpon Springs, FL 7.5 mi Jan 20 Jan 9
Largo, FL 9.3 mi rare rare
Pinellas Park, FL 14 mi rare rare
Seminole, FL 14 mi rare rare
New Port Richey, FL 15 mi Jan 20 Jan 9
Treasure Island, FL 19 mi rare rare
Tampa, FL 20 mi rare rare

Frequently asked questions

When is the last frost in Dunedin?

On average, the last spring frost (32°F) in Dunedin is around January 20. In about 1 year in 10 it comes after February 14, and in 9 years in 10 it comes after December 29.

When is the first frost in Dunedin?

The first fall frost (32°F) usually arrives around January 9. There’s a 10% chance of a freeze by December 16 and a 90% chance by February 4.

Can it frost in Dunedin 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 31.

What growing zone is Dunedin?

Dunedin is in USDA Plant Hardiness Zone 10a (average annual extreme minimum temperature 30 to 35°F), based on the 2023 USDA map for ZIP code 34698. See growing zones in Florida.

More: all Florida frost dates · Florida growing zones · UV index today in Dunedin · frost vs. freeze