When is the last frost in Cokeville, WY?

Frost is possible in any month at the nearest NOAA station (Fossil Butte, WY), so there is no reliable average last frost date.

When is the first frost in Cokeville, WY?

Frost is possible in any month at the nearest NOAA station.

Are these frost dates a forecast?

No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.

Frost dates for 83114Cokeville, WY

Frost is possible in any month near Cokeville, based on NOAA 1991-2020 records for the Fossil Butte, WY station.

Frost is possible in any month. Even summer nights can drop to freezing at this station, so protect tender plants whenever cold nights are forecast.

Frost risk by date

NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.

Spring dates: chance of a frost AFTER the date. Fall dates: chance of a frost BEFORE the date.
Temperature	Last spring: 90% / 50% / 10% chance	First fall: 10% / 50% / 90% chance	Growing season (50%)	Years with at least one
Light frost (36°F)	—	—	21 days	100%
Frost / freeze (32°F)	—	—	43 days	100%
Hard freeze (28°F)	—	—	71 days	100%

Where these dates come from

ZIP code 83114 is matched to the NOAA station Fossil Butte, WY, 27.4 km away, at 6,785 ft elevation (325 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Fossil Butte, WY (used)	6,785 ft	—	—
Sage 4 Nnw, WY	6,210 ft	—	—
Lifton Pumping Stn, ID	5,935 ft	May 19	Sep 21
Bear Lake Sp, UT	5,928 ft	May 15	Oct 4

Frost dates near Cokeville

Dingle, ID 83233 · last May 19, first Sep 21
Geneva, ID 83238 · last Jun 17, first Sep 3
Saint Charles, ID 83272 · last May 19, first Sep 21
Laketown, UT 84038 · last Jun 14, first Sep 1
Frontier, WY 83121 · last —, first —
Garden City, UT 84028 · last May 15, first Oct 4
Bloomington, ID 83223 · last May 19, first Sep 21
Diamondville, WY 83116 · last —, first —

Frequently asked questions

When is the last frost in Cokeville, WY?: Frost is possible in any month at the nearest NOAA station (Fossil Butte, WY), so there is no reliable average last frost date.
When is the first frost in Cokeville, WY?: Frost is possible in any month at the nearest NOAA station.
Are these frost dates a forecast?: No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.