When is the last frost in Antimony, UT?

For ZIP code 84712, the average last spring frost (32°F) is June 17, based on NOAA 1991-2020 climate normals for the Angle, UT weather station. There is a 1-in-10 chance of a frost after July 3.

When is the first frost in Antimony, UT?

The average first fall frost (32°F) is September 12. There is a 1-in-10 chance of frost by August 30, so tender plants are at risk from that point on.

How long is the growing season in 84712?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 85 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 84712Antimony, UT

The average last spring frost in Antimony is June 17 and the average first fall frost is September 12, giving a typical growing season of about 85 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jun 17
Average first fall frost: Sep 12
Growing season: 85 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)	—	—	58 days	100%
Frost / freeze (32°F)	May 31 · Jun 17 · Jul 3	Aug 30 · Sep 12 · Sep 24	85 days	100%
Hard freeze (28°F)	May 13 · May 31 · Jun 18	Sep 7 · Sep 23 · Oct 3	112 days	100%

Where these dates come from

ZIP code 84712 is matched to the NOAA station Angle, UT, 16.6 km away, at 6,410 ft elevation (17 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Angle, UT (used)	6,410 ft	Jun 17	Sep 12
Circleville, UT	6,050 ft	May 23	Sep 27
Marysvale, UT	5,845 ft	May 24	Sep 25
Loa, UT	7,070 ft	May 31	Sep 21

Frost dates near Antimony

Kingston, UT 84743 · last May 23, first Sep 27
Circleville, UT 84723 · last May 23, first Sep 27
Junction, UT 84740 · last May 23, first Sep 27
Greenwich, UT 84732 · last Jun 6, first Sep 21
Marysvale, UT 84750 · last May 24, first Sep 25
Koosharem, UT 84744 · last Jun 6, first Sep 21
Bicknell, UT 84715 · last May 31, first Sep 21
Lyman, UT 84749 · last May 31, first Sep 21

Frequently asked questions

When is the last frost in Antimony, UT?: For ZIP code 84712, the average last spring frost (32°F) is June 17, based on NOAA 1991-2020 climate normals for the Angle, UT weather station. There is a 1-in-10 chance of a frost after July 3.
When is the first frost in Antimony, UT?: The average first fall frost (32°F) is September 12. There is a 1-in-10 chance of frost by August 30, so tender plants are at risk from that point on.
How long is the growing season in 84712?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 85 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.