Trapper Creek, AK frost dates
Last spring frostMay 16median date
First fall frostSep 16median date
Growing season123 daysfrost-free
Hardiness zone4bZone 4b
How Trapper Creek compares
- In 8 years out of 10, the last spring frost in Trapper Creek falls between May 6 and May 28, a 22-day window. The first fall frost falls between September 1 and September 29.
- The median last frost is 5 days earlier than the Alaska median of May 21.
- Its 123-day growing season is longer than 45% of the 165 Alaska places with a regular frost season (state median 124 days).
- The last frost is 8 days later than the zone 4b median of May 8. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 4b chart.
- The weather station records an average of 207 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 6 |
| 50% (median) | May 16 |
| 10% (safe for tender plants) | May 28 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 1 |
| 50% (median) | September 16 |
| 90% (late) | September 29 |
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 Trapper Creek, AK
Trapper Creek, AK frost dates — last frost May 16, first frost Sep 16, zone 4b. whenisthelastfrost.com
Crop
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Start indoors: Feb 21 to Mar 7Transplant outside: Apr 18 to May 2
Start indoors: Mar 7 to Mar 21Transplant outside: May 30 to Jun 13
Start indoors: Mar 7 to Mar 21Transplant outside: May 30 to Jun 13
Start indoors: Mar 21 to Apr 4Transplant outside: May 23 to Jun 6
Start indoors: Mar 21 to Apr 4Transplant outside: Apr 25 to May 9Sow outdoors: Apr 18 to May 23Plant for fall: Jul 22 to Aug 19
Start indoors: Mar 21 to Apr 4Transplant outside: Apr 18 to May 2Sow outdoors: Apr 18 to May 2Plant for fall: Jul 8 to Jul 29
Start indoors: Mar 21 to Apr 4Transplant outside: May 2 to May 16Plant for fall: Jun 10 to Jul 1
Start indoors: Mar 21 to Apr 4Transplant outside: Apr 25 to May 9Plant for fall: Jun 10 to Jul 1
Start indoors: Mar 21 to Apr 4Transplant outside: May 2 to May 16Plant for fall: Jun 10 to Jul 1
Start indoors: Apr 4 to Apr 18Transplant outside: Jun 6 to Jun 20Sow outdoors: Jun 6 to Jun 20
Start indoors: Apr 4 to Apr 18Transplant outside: May 23 to Jun 6
Sow outdoors: Apr 4 to Apr 25Plant for fall: Jun 24 to Jul 15
Sow outdoors: Apr 4 to Apr 25Plant for fall: Jul 22 to Aug 12
Sow outdoors: Apr 11 to May 23Plant for fall: Aug 5 to Aug 26
Start indoors: Apr 18 to Apr 25Transplant outside: May 30 to Jun 6Sow outdoors: May 23 to Jun 6Plant for fall: Jul 1 to Jul 15
Start indoors: Apr 18 to Apr 25Sow outdoors: May 23 to Jun 6Plant for fall: Jul 8 to Jul 22
Start indoors: Apr 18 to Apr 25Sow outdoors: May 23 to Jun 6
Start indoors: Apr 18 to Apr 25Transplant outside: May 30 to Jun 13
Sow outdoors: Apr 25 to May 23Plant for fall: Jun 24 to Jul 8
Sow outdoors: Apr 25 to May 23Plant for fall: Jul 8 to Jul 22
Sow outdoors: Apr 25 to May 16
Sow outdoors: May 2 to May 30Plant for fall: Jul 8 to Jul 22
Sow outdoors: May 2 to May 23Plant for fall: Jul 22 to Aug 12
Sow outdoors: May 23 to Jun 13Plant for fall: Jul 1 to Jul 15
Sow outdoors: May 23 to Jun 6
Transplant outside: May 30 to Jun 20
Plant for fall: Sep 2 to Oct 7
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Trapper Creek, AK
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 21 – Mar 7 | Apr 18 – May 2 | — | — |
| Peppers | Mar 7 – Mar 21 | May 30 – Jun 13 | — | — |
| Eggplant | Mar 7 – Mar 21 | May 30 – Jun 13 | — | — |
| Tomatoes | Mar 21 – Apr 4 | May 23 – Jun 6 | — | — |
| Lettuce | Mar 21 – Apr 4 | Apr 25 – May 9 | Apr 18 – May 23 | Jul 22 – Aug 19 |
| Kale | Mar 21 – Apr 4 | Apr 18 – May 2 | Apr 18 – May 2 | Jul 8 – Jul 29 |
| Broccoli | Mar 21 – Apr 4 | May 2 – May 16 | — | Jun 10 – Jul 1 |
| Cabbage | Mar 21 – Apr 4 | Apr 25 – May 9 | — | Jun 10 – Jul 1 |
| Cauliflower | Mar 21 – Apr 4 | May 2 – May 16 | — | Jun 10 – Jul 1 |
| Okra | Apr 4 – Apr 18 | Jun 6 – Jun 20 | Jun 6 – Jun 20 | — |
| Basil | Apr 4 – Apr 18 | May 23 – Jun 6 | — | — |
| Peas | — | — | Apr 4 – Apr 25 | Jun 24 – Jul 15 |
| Spinach | — | — | Apr 4 – Apr 25 | Jul 22 – Aug 12 |
| Radishes | — | — | Apr 11 – May 23 | Aug 5 – Aug 26 |
| Cucumbers | Apr 18 – Apr 25 | May 30 – Jun 6 | May 23 – Jun 6 | Jul 1 – Jul 15 |
| Zucchini & Summer Squash | Apr 18 – Apr 25 | — | May 23 – Jun 6 | Jul 8 – Jul 22 |
| Winter Squash & Pumpkins | Apr 18 – Apr 25 | — | May 23 – Jun 6 | — |
| Melons & Watermelon | Apr 18 – Apr 25 | May 30 – Jun 13 | — | — |
| Carrots | — | — | Apr 25 – May 23 | Jun 24 – Jul 8 |
| Beets | — | — | Apr 25 – May 23 | Jul 8 – Jul 22 |
| Potatoes | — | — | Apr 25 – May 16 | — |
| Swiss Chard | — | — | May 2 – May 30 | Jul 8 – Jul 22 |
| Cilantro | — | — | May 2 – May 23 | Jul 22 – Aug 12 |
| Green Beans | — | — | May 23 – Jun 13 | Jul 1 – Jul 15 |
| Sweet Corn | — | — | May 23 – Jun 6 | — |
| Sweet Potatoes | — | May 30 – Jun 20 | — | — |
| Garlic | — | — | — | Sep 2 – Oct 7 |
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 Talkeetna Ap, AK weather station, 7 km away (elevation 351 ft (107 m)).
Frost dates near Trapper Creek
- Talkeetna May 16 · Sep 16
- Willow May 15 · Sep 18
- Skwentna May 23 · Sep 9
- Houston May 29 · Sep 7
- Big Lake May 29 · Sep 7
- Wasilla May 16 · Sep 23
- Sutton Jun 1 · Sep 6
- Palmer May 22 · Sep 16
- Chugiak May 18 · Sep 20
- Eagle River May 9 · Sep 26
Frequently asked questions
When is the last frost in Trapper Creek, AK?
The median last spring frost in Trapper Creek, AK is May 16. There is still about a 10% chance of frost after May 28, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Trapper Creek, AK?
The median first fall frost is September 16, with about a 10% chance of frost before September 1.
How long is the growing season in Trapper Creek, AK?
About 123 days between the median last spring frost and first fall frost.
What planting zone is Trapper Creek, AK?
Trapper Creek, AK is in USDA hardiness zone 4b.