Frost dates 2026–2027

Frost dates for Yakima, Washington

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Yakima #2, 0.9 mi away (close match).

Last spring frostApr 8
First fall frostOct 23
196 frost-free days
Last spring frostApr 81 year in 10 after Apr 28
First fall frostOct 231 year in 10 by Oct 9
Growing season196 daysbetween median 32°F dates
Hardiness zoneZone 7a0 to 5°F average extreme low

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Will it freeze in Yakima in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Sun, Nov 8: 32°F (Sun, Nov 8, 6:00 PM PST to Mon, Nov 9, 6:00 AM PST).

Tonight: forecast low 33°F. Frost possible.

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

3 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 Yakima

The median first fall hard-freeze date (28°F) is November 3, from NOAA’s 1991–2020 Climate Normals at Yakima #2. 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 Apr 14 · Apr 28 · May 12 Oct 1 · Oct 12 · Oct 25 167 days
32°F freeze Mar 23 · Apr 8 · Apr 28 Oct 9 · Oct 23 · Nov 5 196 days
28°F hard freeze Feb 28 · Mar 16 · Apr 6 Oct 20 · Nov 3 · Nov 22 229 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00459463. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Yakima #2

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 Yakima, WA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Yakima #2 (station USC00459463, elevation 1,142 ft), 0.9 mi from Yakima. 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 Yakima

CityDistanceLast spring frostFirst fall frost
Union Gap, WA 3.7 mi May 8 Oct 4
Selah, WA 3.7 mi May 5 Oct 4
Toppenish, WA 19 mi Apr 21 Oct 15
Ellensburg, WA 28 mi May 8 Oct 2
Sunnyside, WA 32 mi May 1 Oct 6
Grandview, WA 39 mi May 1 Oct 6
Prosser, WA 45 mi Apr 14 Oct 22
Quincy, WA 55 mi Apr 21 Oct 16
East Wenatchee, WA 58 mi Apr 4 Oct 28
West Richland, WA 58 mi Apr 6 Oct 24

Frequently asked questions

When is the last frost in Yakima?

On average, the last spring frost (32°F) in Yakima is around April 8. In about 1 year in 10 it comes after April 28, and in 9 years in 10 it comes after March 23.

When is the first frost in Yakima?

The first fall frost (32°F) usually arrives around October 23. There’s a 10% chance of a freeze by October 9 and a 90% chance by November 5.

Can it frost in Yakima 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 28.

What growing zone is Yakima?

Yakima is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 98902. See growing zones in Washington.

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