Frost dates 2026–2027

Frost dates for Homer, Alaska

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Homer Airport, 0.6 mi away (close match).

Last spring frostMay 10
First fall frostSep 29
141 frost-free days
Last spring frostMay 101 year in 10 after May 23
First fall frostSep 291 year in 10 by Sep 14
Growing season141 daysbetween median 32°F dates
Hardiness zoneZone 6a−10 to −5°F average extreme low

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Will it freeze in Homer in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 31°F (Thu, Nov 5, 6:00 PM AKST to Fri, Nov 6, 6:00 AM AKST).

Tonight: forecast low 31°F. Freeze.

NWS forecast period: Thu, Nov 5, 6:00 PM AKST to Fri, Nov 6, 6:00 AM AKST.

7 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.

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 Homer

The median first fall hard-freeze date (28°F) is October 11, from NOAA’s 1991–2020 Climate Normals at Homer Airport. This is the 50% probability date, not a forecast for this year.

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 May 14 · May 28 · Jun 8 Sep 1 · Sep 16 · Sep 28 108 days
32°F freeze Apr 27 · May 10 · May 23 Sep 14 · Sep 29 · Oct 13 141 days
28°F hard freeze Apr 9 · Apr 23 · May 7 Sep 28 · Oct 11 · Oct 28 170 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USW00025507. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Homer 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 Homer, AK come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Homer Airport (station USW00025507, elevation 64 ft), 0.6 mi from Homer. 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 Homer

CityDistanceLast spring frostFirst fall frost
Kenai, AK 65 mi May 24 Sep 12
Anchorage, AK 130 mi May 16 Sep 20
Kodiak, AK 132 mi Apr 29 Oct 14
Wasilla, AK 151 mi May 16 Sep 23
Palmer, AK 158 mi May 6 Sep 25

Frequently asked questions

When is the last frost in Homer?

On average, the last spring frost (32°F) in Homer is around May 10. In about 1 year in 10 it comes after May 23, and in 9 years in 10 it comes after April 27.

When is the first frost in Homer?

The first fall frost (32°F) usually arrives around September 29. There’s a 10% chance of a freeze by September 14 and a 90% chance by October 13.

Can it frost in Homer 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 May 28.

What growing zone is Homer?

Homer is in USDA Plant Hardiness Zone 6a (average annual extreme minimum temperature −10 to −5°F), based on the 2023 USDA map for ZIP code 99603. See growing zones in Alaska.

More: all Alaska frost dates · Alaska growing zones · frost vs. freeze