Frost dates 2026–2027

Frost dates for Selah, Washington

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Selah 2 NE, 2.6 mi away (close match).

Last spring frostMay 5
First fall frostOct 4
149 frost-free days
Last spring frostMay 51 year in 10 after May 23
First fall frostOct 41 year in 10 by Sep 23
Growing season149 daysbetween median 32°F dates
Hardiness zoneZone 7a0 to 5°F average extreme low

Checking current alerts… View NWS forecast and alerts.

Will it freeze in Selah 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 Selah

The median first fall hard-freeze date (28°F) is October 17, from NOAA’s 1991–2020 Climate Normals at Selah 2 NE. 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 6 · May 24 · Jun 12 Sep 10 · Sep 24 · Oct 5 120 days
32°F freeze Apr 24 · May 5 · May 23 Sep 23 · Oct 4 · Oct 18 149 days
28°F hard freeze Apr 7 · Apr 23 · May 7 Oct 2 · Oct 17 · Oct 31 177 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00457522. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Selah 2 NE

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 Selah, WA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Selah 2 NE (station USC00457522, elevation 1,120 ft), 2.6 mi from Selah. 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 Selah

CityDistanceLast spring frostFirst fall frost
Yakima, WA 3.7 mi Apr 8 Oct 23
Union Gap, WA 6.8 mi May 8 Oct 4
Toppenish, WA 21 mi Apr 21 Oct 15
Ellensburg, WA 24 mi May 8 Oct 2
Sunnyside, WA 34 mi May 1 Oct 6
Grandview, WA 41 mi May 1 Oct 6
Prosser, WA 47 mi Apr 14 Oct 22
Quincy, WA 52 mi Apr 21 Oct 16
East Wenatchee, WA 55 mi Apr 4 Oct 28
Wenatchee, WA 55 mi Apr 4 Oct 28

Frequently asked questions

When is the last frost in Selah?

On average, the last spring frost (32°F) in Selah is around May 5. In about 1 year in 10 it comes after May 23, and in 9 years in 10 it comes after April 24.

When is the first frost in Selah?

The first fall frost (32°F) usually arrives around October 4. There’s a 10% chance of a freeze by September 23 and a 90% chance by October 18.

Can it frost in Selah 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 24.

What growing zone is Selah?

Selah 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 · frost vs. freeze