Skip to content

Frost dates for Gresham, Oregon

In a typical year, Gresham’s last spring frost lands around Mar 16 and the first fall frost around Nov 20, a growing season of about 249 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 8b.

Right now the growing season is open, with about 26 days until the typical first fall frost.

Last spring frost and first fall frost odds for Gresham, Oregon
OddsLast spring frostFirst fall frost
10 percentFeb 18Oct 30
50 percentMar 16Nov 20
90 percentApr 12Dec 17

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 Gresham is typically around 54°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.

Plantable now in Gresham

Timing comes from the same temperature engine the app uses, run against Gresham’s normals for today.

See the full what-to-plant lookup

Common questions

When is the last frost in Gresham, Oregon?

Gresham’s last spring frost falls around March 16 in a typical year. One year in ten it is done by February 18, and one year in ten frost holds on until April 12. Frost-sensitive planting usually waits for the late side of that band.

When is the first fall frost in Gresham?

The first fall frost arrives around November 20 in a typical year, as early as October 30 in an early year and as late as December 17 in a late one.

How long is the growing season in Gresham?

About 249 days, counted between the typical last spring frost and the typical first fall frost.

What USDA zone is Gresham in?

Gresham is in USDA hardiness zone 8b 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

Row & Bed is a plant reference built around your garden: your zone, your frost dates, your forecast, and a cited page for every variety in your beds.

Set up your garden