Glennallen, AK frost dates

Gardening where frost is possible all year

The weather station nearest Glennallen, AK records freezing temperatures in every month often enough that NOAA cannot define a frost-free season. Gardening is still possible — it just means planning for frost at any time:

• Grow fast, cold-tolerant crops: Radishes, Lettuce, Spinach, Kale, Peas, Potatoes, Swiss Chard, Garlic.
• Plant once the soil can be worked — usually late spring to early summer at high elevation — and keep row covers ready for clear, still nights.
• Use season extension: cold frames, low tunnels, wall-of-water cloches or a greenhouse turn a few frost-free weeks into a real season.
• Frost-tender crops (tomatoes, squash, beans) need protection all season; choose the earliest varieties you can find.

About these dates

Based on 1991–2020 NOAA climate normals for the Gennallen Kcam, AK weather station, 7 km away (elevation 1,385 ft (422 m)).

Frost dates near Glennallen

• Copper Center frost any month
• Gakona Jun 7 · Aug 21
• Chitina May 31 · Sep 3
• Valdez May 14 · Sep 22
• Tatitlek May 14 · Sep 22
• Sutton Jun 1 · Sep 6
• Cordova Apr 29 · Oct 13
• Palmer May 22 · Sep 16
• Tanacross frost any month
• Tok Jun 3 · Aug 27

Frequently asked questions

When is the last frost in Glennallen, AK?

Glennallen, AK can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 248 nights a year at or below 32°F.

What can I grow in Glennallen, AK?

Fast, cold-tolerant crops such as radishes, lettuce, spinach, kale, peas and potatoes, ideally under row covers, cold frames or a greenhouse. Frost-tender crops like tomatoes need protection all season.