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Frost dates for Klamath Falls, Oregon

In a typical year, Klamath Falls’s last spring frost lands around Jun 9 and the first fall frost around Sep 18, a growing season of about 101 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 6b.

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

Last spring frost and first fall frost odds for Klamath Falls, Oregon
OddsLast spring frostFirst fall frost
10 percentMay 22Sep 4
50 percentJun 9Sep 18
90 percentJun 26Oct 1

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 Klamath Falls is typically around 46°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 Klamath Falls, Oregon?

Klamath Falls’s last spring frost falls around June 9 in a typical year. One year in ten it is done by May 22, and one year in ten frost holds on until June 26. Frost-sensitive planting usually waits for the late side of that band.

When is the first fall frost in Klamath Falls?

The first fall frost arrives around September 18 in a typical year, as early as September 4 in an early year and as late as October 1 in a late one.

How long is the growing season in Klamath Falls?

About 101 days, counted between the typical last spring frost and the typical first fall frost.

What USDA zone is Klamath Falls in?

Klamath Falls is in USDA hardiness zone 6b 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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