Frost dates 2026–2027

Frost dates for Auburn, Washington

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Kent, 8.0 mi away (close match).

Last spring frostMar 20
First fall frostNov 10
233 frost-free days
Last spring frostMar 201 year in 10 after Apr 8
First fall frostNov 101 year in 10 by Oct 26
Growing season233 daysbetween median 32°F dates
Hardiness zoneZone 8b15 to 20°F average extreme low

Checking current alerts… View NWS forecast and alerts.

Will it freeze in Auburn in the next 7 nights?

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

Tonight: forecast low 42°F. Above 36°F.

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

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 Auburn

The median first fall hard-freeze date (28°F) is November 24, from NOAA’s 1991–2020 Climate Normals at Kent. 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 Mar 26 · Apr 11 · Apr 30 Oct 13 · Oct 27 · Nov 11 197 days
32°F freeze Feb 27 · Mar 20 · Apr 8 Oct 26 · Nov 10 · Nov 26 233 days
28°F hard freeze Jan 19 · Feb 25 · Mar 16 Nov 6 · Nov 24 · Dec 20 275 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00454169. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Kent

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 Auburn, WA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Kent (station USC00454169, elevation 30 ft), 8.0 mi from Auburn. 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 Auburn

CityDistanceLast spring frostFirst fall frost
Pacific, WA 3.7 mi Mar 8 Nov 14
Sumner, WA 5.6 mi Apr 11 Oct 30
Kent, WA 5.6 mi Mar 20 Nov 10
Federal Way, WA 6.2 mi Mar 8 Nov 14
Edgewood, WA 6.2 mi Mar 8 Nov 14
Milton, WA 6.2 mi Mar 8 Nov 14
Covington, WA 6.2 mi Apr 20 Oct 25
Bonney Lake, WA 7.5 mi Apr 11 Oct 30
Des Moines, WA 7.5 mi Mar 2 Nov 23
Fife, WA 8.1 mi Mar 8 Nov 14

Frequently asked questions

When is the last frost in Auburn?

On average, the last spring frost (32°F) in Auburn is around March 20. In about 1 year in 10 it comes after April 8, and in 9 years in 10 it comes after February 27.

When is the first frost in Auburn?

The first fall frost (32°F) usually arrives around November 10. There’s a 10% chance of a freeze by October 26 and a 90% chance by November 26.

Can it frost in Auburn 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 11.

What growing zone is Auburn?

Auburn is in USDA Plant Hardiness Zone 8b (average annual extreme minimum temperature 15 to 20°F), based on the 2023 USDA map for ZIP code 98002. See growing zones in Washington.

More: all Washington frost dates · Washington growing zones · UV index today in Auburn · frost vs. freeze