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Frost dates for Moses Lake, Washington

In a typical year, Moses Lake’s last spring frost lands around Apr 27 and the first fall frost around Oct 8, a growing season of about 164 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 7a.

Right now the typical frost season has arrived; planting waits for spring.

Last spring frost and first fall frost odds for Moses Lake, Washington
OddsLast spring frostFirst fall frost
10 percentApr 10Sep 29
50 percentApr 27Oct 8
90 percentMay 11Oct 23

A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.

Soil in Moses Lake is typically around 48°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.

See what is plantable in your ZIP with the what-to-plant lookup.

Common questions

When is the last frost in Moses Lake, Washington?

Moses Lake’s last spring frost falls around April 27 in a typical year. One year in ten it is done by April 10, and one year in ten frost holds on until May 11. Frost-sensitive planting usually waits for the late side of that band.

When is the first fall frost in Moses Lake?

The first fall frost arrives around October 8 in a typical year, as early as September 29 in an early year and as late as October 23 in a late one.

How long is the growing season in Moses Lake?

About 164 days, counted between the typical last spring frost and the typical first fall frost.

What USDA zone is Moses Lake in?

Moses Lake is in USDA hardiness zone 7a under the 2023 USDA Plant Hardiness Zone Map.

Dates come from 30-year NOAA climate normals for the nearest reporting station. They describe odds, not a forecast.

Nearby cities

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