Frost Report

All states Alaska

Frost dates for King Cove, AK

When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.

Last spring frost

May 25

typical year

Safe to plant

June 10

frost is over in 9 of 10 years

First fall frost

October 4

typical year

Growing season

131 days

frost-free, typical year

When to plant

Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.

CropStart indoorsPlant outsideFall planting
Cool-season crops
Peas – Apr 27 – May 11 –
Spinach – Apr 13 – May 4 Aug 9 – 23
Lettuce – Apr 27 – May 18 Aug 9 – 23
Radishes – Apr 27 – Jun 8 Aug 23 – Sep 6
Onions – Apr 27 – May 11 –
Potatoes – May 4 – 18 –
Carrots – May 4 – 25 Jul 12 – 26
Beets – Apr 27 – May 11 Jul 26 – Aug 9
Kale Mar 16 – 30 Apr 27 – May 11 Jul 26 – Aug 9
Broccoli Mar 16 – 30 May 11 – 25 Jul 26 – Aug 9
Cabbage Mar 2 – 16 Apr 27 – May 11 Jul 26 – Aug 9
Garlic – – Aug 23 – Sep 13
Warm-season crops
Tomatoes Apr 15 – 29 Jun 10 – 24 –
Peppers Apr 8 – 22 Jun 17 – Jul 1 –
Cucumbers – Jun 10 – Jul 1 –
Zucchini – Jun 10 – Jul 8 –
Pumpkins – Jun 10 – Jul 1 –
Green beans – Jun 10 – Jul 26 –
Sweet corn – Jun 10 – Jul 8 –
Basil May 6 – 20 Jun 17 – 24 –

Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.

The year at a glance

Start indoors Plant outside Fall planting

The chance of frost, by date

1 year in 10Half of years9 years in 10
Spring frost after June 10May 25May 9
Fall frost before September 20October 4October 20

Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.

Hard freeze (28°F)

A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around May 8 (May 27 in a late year), and the first one in fall around October 21.

Towns that use these dates

This is the nearest NOAA station with frost records for 3 towns.

King Cove, False Pass, Cold Bay

Where these dates come from

NOAA weather station COLD BAY AP, AK US (USW00025624), 1991–2020 climate normals. It's the nearest station for 3 zip codes, all within 35 miles:

99571, 99583, 99612

1 of these zip codes are more than 30 miles from the station, so their real frost dates may differ by a week or more.

Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.