When is the last frost in Crawford, CO?

For ZIP code 81415, the average last spring frost (32°F) is June 20, based on NOAA 1991-2020 climate normals for the Cimarron, CO weather station. There is a 1-in-10 chance of a frost after July 7.

When is the first frost in Crawford, CO?

The average first fall frost (32°F) is September 10. There is a 1-in-10 chance of frost by August 23, so tender plants are at risk from that point on.

How long is the growing season in 81415?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 81 days long.

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 81415Crawford, CO

The average last spring frost in Crawford is June 20 and the average first fall frost is September 10, giving a typical growing season of about 81 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jun 20
Average first fall frost: Sep 10
Growing season: 81 days

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)	—	—	51 days	100%
Frost / freeze (32°F)	Jun 4 · Jun 20 · Jul 7	Aug 23 · Sep 10 · Sep 23	81 days	100%
Hard freeze (28°F)	May 15 · Jun 2 · Jun 18	Sep 7 · Sep 21 · Oct 3	110 days	100%

Where these dates come from

ZIP code 81415 is matched to the NOAA station Cimarron, CO, 28.3 km away, at 6,890 ft elevation (302 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Cimarron, CO (used)	6,890 ft	Jun 20	Sep 10
Black Canyon Of The Gunnison, CO	8,151 ft	May 23	Oct 1
Paonia 1Sw, CO	5,581 ft	May 3	Oct 12
Montrose 11 Ene, CO	8,402 ft	May 20	Oct 1

Frost dates near Crawford

Lazear, CO 81420 · last May 3, first Oct 12
Hotchkiss, CO 81419 · last May 3, first Oct 12
Paonia, CO 81428 · last May 3, first Oct 12
Montrose, CO 81402 · last Apr 28, first Oct 14
Austin, CO 81410 · last May 1, first Oct 7
Cory, CO 81414 · last May 1, first Oct 7
Olathe, CO 81425 · last May 2, first Oct 8
Eckert, CO 81418 · last May 3, first Oct 12

Frequently asked questions

When is the last frost in Crawford, CO?: For ZIP code 81415, the average last spring frost (32°F) is June 20, based on NOAA 1991-2020 climate normals for the Cimarron, CO weather station. There is a 1-in-10 chance of a frost after July 7.
When is the first frost in Crawford, CO?: The average first fall frost (32°F) is September 10. There is a 1-in-10 chance of frost by August 23, so tender plants are at risk from that point on.
How long is the growing season in 81415?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 81 days long.
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.