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Frost dates for Laramie, Wyoming

In a typical year, Laramie’s last spring frost lands around Jun 7 and the first fall frost around Sep 4, a growing season of about 89 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 4b.

Last spring frost and first fall frost odds for Laramie, Wyoming
OddsLast spring frostFirst fall frost
10 percentMay 23Aug 17
50 percentJun 7Sep 4
90 percentJun 29Sep 18

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 Laramie is typically around 62°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.

Plantable now in Laramie

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

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