When is the last frost in Shishmaref, AK?

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

When is the first frost in Shishmaref, AK?

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 99772Shishmaref, AK

Frost is possible in any month near Shishmaref, based on NOAA 1991-2020 records for the Deering Ap, AK 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)	—	—	43 days	100%
Frost / freeze (32°F)	—	—	76 days	100%
Hard freeze (28°F)	May 16 · Jun 1 · Jun 14	Aug 29 · Sep 15 · Oct 1	106 days	100%

Where these dates come from

ZIP code 99772 is matched to the NOAA station Deering Ap, AK, 152.7 km away, at 21 ft elevation (14 ft higher than the ZIP code's center). This station is relatively far away, so local dates may differ more than usual. Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Deering Ap, AK (used)	21 ft	—	—
Kotzebue Ralph Wein Ap, AK	30 ft	Jun 5	Sep 24
Kivalina Ap, AK	10 ft	Jun 10	Sep 11
Nome Muni Ap, AK	13 ft	Jun 5	Sep 3

Frost dates near Shishmaref

Brevig Mission, AK 99785 · last Jun 5, first Sep 3
Teller, AK 99778 · last Jun 5, first Sep 3

Frequently asked questions

When is the last frost in Shishmaref, AK?: Frost is possible in any month at the nearest NOAA station (Deering Ap, AK), so there is no reliable average last frost date.
When is the first frost in Shishmaref, AK?: 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.