Selawik, AK frost dates
Last spring frostJun 5median date
First fall frostSep 24median date
Growing season111 daysfrost-free
Hardiness zone2aZone 2a
How Selawik compares
- In 8 years out of 10, the last spring frost in Selawik falls between May 20 and June 17, a 28-day window. The first fall frost falls between September 7 and October 6.
- The median last frost is 15 days later than the Alaska median of May 21.
- Its 111-day growing season is longer than 30% of the 165 Alaska places with a regular frost season (state median 124 days).
- The last frost is 12 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 236 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 20 |
| 50% (median) | June 5 |
| 10% (safe for tender plants) | June 17 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 7 |
| 50% (median) | September 24 |
| 90% (late) | October 6 |
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 Selawik, AK
Selawik, AK frost dates — last frost Jun 5, first frost Sep 24, zone 2a. whenisthelastfrost.com
Crop
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Start indoors: Mar 13 to Mar 27Transplant outside: May 8 to May 22
Start indoors: Mar 27 to Apr 10Transplant outside: Jun 19 to Jul 3
Start indoors: Mar 27 to Apr 10Transplant outside: Jun 19 to Jul 3
Start indoors: Apr 10 to Apr 24Transplant outside: Jun 12 to Jun 26
Start indoors: Apr 10 to Apr 24Transplant outside: May 15 to May 29Sow outdoors: May 8 to Jun 12Plant for fall: Jul 30 to Aug 27
Start indoors: Apr 10 to Apr 24Transplant outside: May 8 to May 22Sow outdoors: May 8 to May 22Plant for fall: Jul 16 to Aug 6
Start indoors: Apr 10 to Apr 24Transplant outside: May 22 to Jun 5
Start indoors: Apr 10 to Apr 24Transplant outside: May 15 to May 29
Start indoors: Apr 10 to Apr 24Transplant outside: May 22 to Jun 5
Start indoors: Apr 24 to May 8Transplant outside: Jun 26 to Jul 10Sow outdoors: Jun 26 to Jul 10
Start indoors: Apr 24 to May 8Transplant outside: Jun 12 to Jun 26
Sow outdoors: Apr 24 to May 15Plant for fall: Jul 2 to Jul 23
Sow outdoors: Apr 24 to May 15Plant for fall: Jul 30 to Aug 20
Sow outdoors: May 1 to Jun 12Plant for fall: Aug 13 to Sep 3
Start indoors: May 8 to May 15Transplant outside: Jun 19 to Jun 26Sow outdoors: Jun 12 to Jun 26
Start indoors: May 8 to May 15Sow outdoors: Jun 12 to Jun 26Plant for fall: Jul 16 to Jul 30
Start indoors: May 8 to May 15Sow outdoors: Jun 12 to Jun 26
Start indoors: May 8 to May 15Transplant outside: Jun 19 to Jul 3
Sow outdoors: May 15 to Jun 12Plant for fall: Jul 2 to Jul 16
Sow outdoors: May 15 to Jun 12Plant for fall: Jul 16 to Jul 30
Sow outdoors: May 15 to Jun 5
Sow outdoors: May 22 to Jun 19Plant for fall: Jul 16 to Jul 30
Sow outdoors: May 22 to Jun 12Plant for fall: Jul 30 to Aug 20
Sow outdoors: Jun 12 to Jul 3
Sow outdoors: Jun 12 to Jun 26
Transplant outside: Jun 19 to Jul 10
Plant for fall: Sep 10 to Oct 15
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Selawik, AK
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 13 – Mar 27 | May 8 – May 22 | — | — |
| Peppers | Mar 27 – Apr 10 | Jun 19 – Jul 3 | — | — |
| Eggplant | Mar 27 – Apr 10 | Jun 19 – Jul 3 | — | — |
| Tomatoes | Apr 10 – Apr 24 | Jun 12 – Jun 26 | — | — |
| Lettuce | Apr 10 – Apr 24 | May 15 – May 29 | May 8 – Jun 12 | Jul 30 – Aug 27 |
| Kale | Apr 10 – Apr 24 | May 8 – May 22 | May 8 – May 22 | Jul 16 – Aug 6 |
| Broccoli | Apr 10 – Apr 24 | May 22 – Jun 5 | — | — |
| Cabbage | Apr 10 – Apr 24 | May 15 – May 29 | — | — |
| Cauliflower | Apr 10 – Apr 24 | May 22 – Jun 5 | — | — |
| Okra | Apr 24 – May 8 | Jun 26 – Jul 10 | Jun 26 – Jul 10 | — |
| Basil | Apr 24 – May 8 | Jun 12 – Jun 26 | — | — |
| Peas | — | — | Apr 24 – May 15 | Jul 2 – Jul 23 |
| Spinach | — | — | Apr 24 – May 15 | Jul 30 – Aug 20 |
| Radishes | — | — | May 1 – Jun 12 | Aug 13 – Sep 3 |
| Cucumbers | May 8 – May 15 | Jun 19 – Jun 26 | Jun 12 – Jun 26 | — |
| Zucchini & Summer Squash | May 8 – May 15 | — | Jun 12 – Jun 26 | Jul 16 – Jul 30 |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 111 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 8 – May 15 | — | Jun 12 – Jun 26 | — |
| Melons & Watermelon | May 8 – May 15 | Jun 19 – Jul 3 | — | — |
| Carrots | — | — | May 15 – Jun 12 | Jul 2 – Jul 16 |
| Beets | — | — | May 15 – Jun 12 | Jul 16 – Jul 30 |
| Potatoes | — | — | May 15 – Jun 5 | — |
| Swiss Chard | — | — | May 22 – Jun 19 | Jul 16 – Jul 30 |
| Cilantro | — | — | May 22 – Jun 12 | Jul 30 – Aug 20 |
| Green Beans | — | — | Jun 12 – Jul 3 | — |
| Sweet Corn | — | — | Jun 12 – Jun 26 | — |
| Sweet Potatoes Warning: Your frost-free season is about 111 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 19 – Jul 10 | — | — |
| Garlic | — | — | — | Sep 10 – Oct 15 |
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 Kotzebue Ralph Wein Ap, AK weather station, 119 km away (elevation 30 ft (9 m)). That is far enough away that your dates may differ, especially if your elevation is different.
Frost dates near Selawik
- Kiana Jun 5 · Sep 24
- Noorvik Jun 5 · Sep 24
- Buckland frost any month
- Kotzebue Jun 5 · Sep 24
- Deering frost any month
- Noatak Jun 10 · Sep 11
- Koyuk May 25 · Sep 3
- Huslia May 18 · Sep 8
- Koyukuk May 18 · Sep 8
- Nulato May 25 · Sep 3
Frequently asked questions
When is the last frost in Selawik, AK?
The median last spring frost in Selawik, AK is June 5. There is still about a 10% chance of frost after June 17, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Selawik, AK?
The median first fall frost is September 24, with about a 10% chance of frost before September 7.
How long is the growing season in Selawik, AK?
About 111 days between the median last spring frost and first fall frost.
What planting zone is Selawik, AK?
Selawik, AK is in USDA hardiness zone 2a.