When is the last frost in Rollinsville, CO?

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

When is the first frost in Rollinsville, 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 80474Rollinsville, CO

Frost is possible in any month near Rollinsville, based on NOAA 1991-2020 records for the Fraser, 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)	—	—	13 days	100%
Frost / freeze (32°F)	—	—	32 days	100%
Hard freeze (28°F)	—	—	69 days	100%

Where these dates come from

ZIP code 80474 is matched to the NOAA station Fraser, CO, 27.1 km away, at 8,560 ft elevation (92 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Fraser, CO (used)	8,560 ft	—	—
Coal Creek Canyon, CO	8,951 ft	Jun 5	Sep 16
Gross Rsvr, CO	7,971 ft	May 24	Sep 23
Boulder 14 W, CO	9,829 ft	Jun 21	Sep 2

Frost dates near Rollinsville

Nederland, CO 80466 · last May 24, first Sep 23
Pinecliffe, CO 80471 · last May 24, first Sep 23
Black Hawk, CO 80422 · last Jun 5, first Sep 16
Central City, CO 80427 · last May 30, first Sep 19
Boulder, CO 80308 · last May 24, first Sep 23
Ward, CO 80481 · last Jun 5, first Sep 16
Eldorado Springs, CO 80025 · last May 3, first Oct 14
Dumont, CO 80436 · last May 24, first Sep 23

Frequently asked questions

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