Tok, AK frost dates
Last spring frostJun 3median date
First fall frostAug 27median date
Growing season85 daysfrost-free
Hardiness zone2aZone 2a
How Tok compares
- In 8 years out of 10, the last spring frost in Tok falls between May 22 and July 13, a 52-day window. The first fall frost falls between August 11 and September 12.
- The median last frost is 13 days later than the Alaska median of May 21.
- Its 85-day growing season is longer than 3% of the 165 Alaska places with a regular frost season (state median 124 days).
- The last frost is 10 days later than the zone 2a median of May 24. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 2a chart.
- The weather station records an average of 252 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 22 |
| 50% (median) | June 3 |
| 10% (safe for tender plants) | July 13 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | August 11 |
| 50% (median) | August 27 |
| 90% (late) | September 12 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Tok, AK
Tok, AK frost dates — last frost Jun 3, first frost Aug 27, zone 2a. whenisthelastfrost.com
Crop
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Start indoors: Mar 11 to Mar 25Transplant outside: May 6 to May 20
Start indoors: Mar 25 to Apr 8Transplant outside: Jun 17 to Jul 1
Start indoors: Mar 25 to Apr 8Transplant outside: Jun 17 to Jul 1
Start indoors: Apr 8 to Apr 22Transplant outside: Jun 10 to Jun 24
Start indoors: Apr 8 to Apr 22Transplant outside: May 13 to May 27Sow outdoors: May 6 to Jun 10Plant for fall: Jul 2 to Jul 30
Start indoors: Apr 8 to Apr 22Transplant outside: May 6 to May 20Sow outdoors: May 6 to May 20Plant for fall: Jun 18 to Jul 9
Start indoors: Apr 8 to Apr 22Transplant outside: May 20 to Jun 3
Start indoors: Apr 8 to Apr 22Transplant outside: May 13 to May 27
Start indoors: Apr 8 to Apr 22Transplant outside: May 20 to Jun 3
Start indoors: Apr 22 to May 6Transplant outside: Jun 24 to Jul 8Sow outdoors: Jun 24 to Jul 8
Start indoors: Apr 22 to May 6Transplant outside: Jun 10 to Jun 24
Sow outdoors: Apr 22 to May 13
Sow outdoors: Apr 22 to May 13Plant for fall: Jul 2 to Jul 23
Sow outdoors: Apr 29 to Jun 10Plant for fall: Jul 16 to Aug 6
Start indoors: May 6 to May 13Transplant outside: Jun 17 to Jun 24Sow outdoors: Jun 10 to Jun 24
Start indoors: May 6 to May 13Sow outdoors: Jun 10 to Jun 24
Start indoors: May 6 to May 13Sow outdoors: Jun 10 to Jun 24
Start indoors: May 6 to May 13Transplant outside: Jun 17 to Jul 1
Sow outdoors: May 13 to Jun 10
Sow outdoors: May 13 to Jun 10
Sow outdoors: May 13 to Jun 3
Sow outdoors: May 20 to Jun 17
Sow outdoors: May 20 to Jun 10Plant for fall: Jul 2 to Jul 23
Sow outdoors: Jun 10 to Jul 1
Sow outdoors: Jun 10 to Jun 24
Transplant outside: Jun 17 to Jul 8
Plant for fall: Aug 13 to Sep 17
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Tok, AK
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 11 – Mar 25 | May 6 – May 20 | — | — |
| Peppers Warning: Your frost-free season is about 85 days, which is tight for peppers (75+ days). Choose early varieties and use transplants or row covers. | Mar 25 – Apr 8 | Jun 17 – Jul 1 | — | — |
| Eggplant Warning: Your frost-free season is about 85 days, which is tight for eggplant (75+ days). Choose early varieties and use transplants or row covers. | Mar 25 – Apr 8 | Jun 17 – Jul 1 | — | — |
| Tomatoes | Apr 8 – Apr 22 | Jun 10 – Jun 24 | — | — |
| Lettuce | Apr 8 – Apr 22 | May 13 – May 27 | May 6 – Jun 10 | Jul 2 – Jul 30 |
| Kale | Apr 8 – Apr 22 | May 6 – May 20 | May 6 – May 20 | Jun 18 – Jul 9 |
| Broccoli | Apr 8 – Apr 22 | May 20 – Jun 3 | — | — |
| Cabbage | Apr 8 – Apr 22 | May 13 – May 27 | — | — |
| Cauliflower | Apr 8 – Apr 22 | May 20 – Jun 3 | — | — |
| Okra | Apr 22 – May 6 | Jun 24 – Jul 8 | Jun 24 – Jul 8 | — |
| Basil | Apr 22 – May 6 | Jun 10 – Jun 24 | — | — |
| Peas | — | — | Apr 22 – May 13 | — |
| Spinach | — | — | Apr 22 – May 13 | Jul 2 – Jul 23 |
| Radishes | — | — | Apr 29 – Jun 10 | Jul 16 – Aug 6 |
| Cucumbers | May 6 – May 13 | Jun 17 – Jun 24 | Jun 10 – Jun 24 | — |
| Zucchini & Summer Squash | May 6 – May 13 | — | Jun 10 – Jun 24 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 85 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 6 – May 13 | — | Jun 10 – Jun 24 | — |
| Melons & Watermelon Warning: Your frost-free season is about 85 days, which is tight for melons & watermelon (85+ days). Choose early varieties and use transplants or row covers. | May 6 – May 13 | Jun 17 – Jul 1 | — | — |
| Carrots | — | — | May 13 – Jun 10 | — |
| Beets | — | — | May 13 – Jun 10 | — |
| Potatoes | — | — | May 13 – Jun 3 | — |
| Swiss Chard | — | — | May 20 – Jun 17 | — |
| Cilantro | — | — | May 20 – Jun 10 | Jul 2 – Jul 23 |
| Green Beans | — | — | Jun 10 – Jul 1 | — |
| Sweet Corn Warning: Your frost-free season is about 85 days, which is tight for sweet corn (80+ days). Choose early varieties and use transplants or row covers. | — | — | Jun 10 – Jun 24 | — |
| Sweet Potatoes Warning: Your frost-free season is about 85 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 17 – Jul 8 | — | — |
| Garlic | — | — | — | Aug 13 – Sep 17 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Tok #2, AK weather station, 3 km away (elevation 1,657 ft (505 m)).
Frost dates near Tok
- Tanacross frost any month
- Northway May 26 · Sep 1
- Chicken frost any month
- Delta Junction May 17 · Sep 7
- Gakona Jun 7 · Aug 21
- Eagle May 29 · Aug 23
- Fort Greely May 26 · Sep 2
- Copper Center frost any month
- Glennallen frost any month
- Chitina May 31 · Sep 3
Frequently asked questions
When is the last frost in Tok, AK?
The median last spring frost in Tok, AK is June 3. There is still about a 10% chance of frost after July 13, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Tok, AK?
The median first fall frost is August 27, with about a 10% chance of frost before August 11.
How long is the growing season in Tok, AK?
About 85 days between the median last spring frost and first fall frost.
What planting zone is Tok, AK?
Tok, AK is in USDA hardiness zone 2a.