When is the last frost in Snowmass, CO?

Frost is possible in any month at the nearest NOAA station (Sugarloaf Rsvr, CO), so there is no reliable average last frost date.

When is the first frost in Snowmass, CO?

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 81654Snowmass, CO

Frost is possible in any month near Snowmass, based on NOAA 1991-2020 records for the Sugarloaf Rsvr, CO 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)	—	—	20 days	100%
Frost / freeze (32°F)	—	—	53 days	100%
Hard freeze (28°F)	May 31 · Jun 13 · Jul 1	Aug 24 · Sep 8 · Sep 21	85 days	100%

Where these dates come from

ZIP code 81654 is matched to the NOAA station Sugarloaf Rsvr, CO, 56.8 km away, at 9,738 ft elevation (262 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Sugarloaf Rsvr, CO (used)	9,738 ft	—	—
Aspen Pitkin Co Ap, CO	7,721 ft	May 31	Sep 23
Aspen 1Sw, CO	8,175 ft	Jun 2	Sep 23
Meredith, CO	7,826 ft	—	—

Frost dates near Snowmass

Snowmass Village, CO 81615 · last Jun 2, first Sep 23
Aspen, CO 81612 · last May 31, first Sep 23
Woody Creek, CO 81656 · last May 31, first Sep 23
Basalt, CO 81621 · last May 31, first Sep 23
Carbondale, CO 81623 · last Jun 2, first Sep 23
Meredith, CO 81642 · last Jun 2, first Sep 23
Crested Butte, CO 81225 · last —, first —
Glenwood Springs, CO 81601 · last May 13, first Oct 3

Frequently asked questions

When is the last frost in Snowmass, CO?: Frost is possible in any month at the nearest NOAA station (Sugarloaf Rsvr, CO), so there is no reliable average last frost date.
When is the first frost in Snowmass, CO?: 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.