When is the last frost in Brian Head, UT?

For ZIP code 84719, the average last spring frost (32°F) is June 21, based on NOAA 1991-2020 climate normals for the Brian Head, UT weather station. There is a 1-in-10 chance of a frost after July 6.

When is the first frost in Brian Head, UT?

The average first fall frost (32°F) is September 12. There is a 1-in-10 chance of frost by September 1, so tender plants are at risk from that point on.

How long is the growing season in 84719?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 82 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 84719Brian Head, UT

The average last spring frost in Brian Head is June 21 and the average first fall frost is September 12, giving a typical growing season of about 82 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jun 21
Average first fall frost: Sep 12
Growing season: 82 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)	—	—	53 days	100%
Frost / freeze (32°F)	Jun 6 · Jun 21 · Jul 6	Sep 1 · Sep 12 · Sep 23	82 days	100%
Hard freeze (28°F)	May 25 · Jun 7 · Jun 24	Sep 10 · Sep 22 · Oct 1	103 days	100%

Where these dates come from

ZIP code 84719 is matched to the NOAA station Brian Head, UT, 0.6 km away, at 9,770 ft elevation (75 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Brian Head, UT (used)	9,770 ft	Jun 21	Sep 12
Cedar Breaks Nm, UT	10,373 ft	Jun 11	Oct 3
Blowhard Mtn Radar, UT	10,694 ft	Jun 7	Sep 29
Cedar City 5E, UT	6,465 ft	May 23	Oct 4

Frost dates near Brian Head

Summit, UT 84772 · last May 4, first Oct 13
Parowan, UT 84761 · last May 4, first Oct 13
Cedar City, UT 84720 · last May 4, first Oct 13
Paragonah, UT 84760 · last May 21, first Sep 29
Duck Creek Village, UT 84762 · last Jun 21, first Sep 12
Kanarraville, UT 84742 · last May 21, first Sep 29
Alton, UT 84710 · last Jun 1, first Sep 30
Hatch, UT 84735 · last Jun 19, first Sep 13

Frequently asked questions

When is the last frost in Brian Head, UT?: For ZIP code 84719, the average last spring frost (32°F) is June 21, based on NOAA 1991-2020 climate normals for the Brian Head, UT weather station. There is a 1-in-10 chance of a frost after July 6.
When is the first frost in Brian Head, UT?: The average first fall frost (32°F) is September 12. There is a 1-in-10 chance of frost by September 1, so tender plants are at risk from that point on.
How long is the growing season in 84719?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 82 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.