Aberdeen, WA frost dates
Last spring frostMar 29median date
First fall frostNov 15median date
Growing season231 daysfrost-free
Hardiness zone8bZone 8b
How Aberdeen compares
- In 8 years out of 10, the last spring frost in Aberdeen falls between February 25 and April 20, a 54-day window. The first fall frost falls between October 27 and December 10.
- The median last frost is 23 days earlier than the Washington median of Apr 21.
- Its 231-day growing season is longer than 85% of the 491 Washington places with a regular frost season (state median 182 days).
- The last frost is 13 days later than the zone 8b median of Mar 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 8b chart.
- The weather station records an average of 35 nights a year at or below 32°F.
- Compared with Olympia, WA, 68 km away, the last frost here is 31 days earlier than there and the growing season is 63 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | February 25 |
| 50% (median) | March 29 |
| 10% (safe for tender plants) | April 20 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 27 |
| 50% (median) | November 15 |
| 90% (late) | December 10 |
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 Aberdeen, WA
Aberdeen, WA frost dates — last frost Mar 29, first frost Nov 15, zone 8b. whenisthelastfrost.com
Crop
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Start indoors: Jan 4 to Jan 18Transplant outside: Mar 1 to Mar 15
Start indoors: Jan 18 to Feb 1Transplant outside: Apr 12 to Apr 26
Start indoors: Jan 18 to Feb 1Transplant outside: Apr 12 to Apr 26
Start indoors: Feb 1 to Feb 15Transplant outside: Apr 5 to Apr 19
Start indoors: Feb 1 to Feb 15Transplant outside: Mar 8 to Mar 22Sow outdoors: Mar 1 to Apr 5Plant for fall: Sep 20 to Oct 18
Start indoors: Feb 1 to Feb 15Transplant outside: Mar 1 to Mar 15Sow outdoors: Mar 1 to Mar 15Plant for fall: Sep 6 to Sep 27
Start indoors: Feb 1 to Feb 15Transplant outside: Mar 15 to Mar 29Plant for fall: Aug 9 to Aug 30
Start indoors: Feb 1 to Feb 15Transplant outside: Mar 8 to Mar 22Plant for fall: Aug 9 to Aug 30
Start indoors: Feb 1 to Feb 15Transplant outside: Mar 15 to Mar 29Plant for fall: Aug 9 to Aug 30
Start indoors: Feb 15 to Mar 1Transplant outside: Apr 19 to May 3Sow outdoors: Apr 19 to May 3
Start indoors: Feb 15 to Mar 1Transplant outside: Apr 5 to Apr 19
Sow outdoors: Feb 15 to Mar 8Plant for fall: Aug 23 to Sep 13
Sow outdoors: Feb 15 to Mar 8Plant for fall: Sep 20 to Oct 11
Sow outdoors: Feb 22 to Apr 5Plant for fall: Oct 4 to Oct 25
Start indoors: Mar 1 to Mar 8Transplant outside: Apr 12 to Apr 19Sow outdoors: Apr 5 to Apr 19Plant for fall: Aug 30 to Sep 13
Start indoors: Mar 1 to Mar 8Sow outdoors: Apr 5 to Apr 19Plant for fall: Sep 6 to Sep 20
Start indoors: Mar 1 to Mar 8Sow outdoors: Apr 5 to Apr 19
Start indoors: Mar 1 to Mar 8Transplant outside: Apr 12 to Apr 26
Sow outdoors: Mar 8 to Apr 5Plant for fall: Aug 23 to Sep 6
Sow outdoors: Mar 8 to Apr 5Plant for fall: Sep 6 to Sep 20
Sow outdoors: Mar 8 to Mar 29
Sow outdoors: Mar 15 to Apr 12Plant for fall: Sep 6 to Sep 20
Sow outdoors: Mar 15 to Apr 5Plant for fall: Sep 20 to Oct 11
Sow outdoors: Apr 5 to Apr 26Plant for fall: Aug 30 to Sep 13
Sow outdoors: Apr 5 to Apr 19
Transplant outside: Apr 12 to May 3
Plant for fall: Nov 1 to Dec 6
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Aberdeen, WA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 4 – Jan 18 | Mar 1 – Mar 15 | — | — |
| Peppers | Jan 18 – Feb 1 | Apr 12 – Apr 26 | — | — |
| Eggplant | Jan 18 – Feb 1 | Apr 12 – Apr 26 | — | — |
| Tomatoes | Feb 1 – Feb 15 | Apr 5 – Apr 19 | — | — |
| Lettuce | Feb 1 – Feb 15 | Mar 8 – Mar 22 | Mar 1 – Apr 5 | Sep 20 – Oct 18 |
| Kale | Feb 1 – Feb 15 | Mar 1 – Mar 15 | Mar 1 – Mar 15 | Sep 6 – Sep 27 |
| Broccoli | Feb 1 – Feb 15 | Mar 15 – Mar 29 | — | Aug 9 – Aug 30 |
| Cabbage | Feb 1 – Feb 15 | Mar 8 – Mar 22 | — | Aug 9 – Aug 30 |
| Cauliflower | Feb 1 – Feb 15 | Mar 15 – Mar 29 | — | Aug 9 – Aug 30 |
| Okra | Feb 15 – Mar 1 | Apr 19 – May 3 | Apr 19 – May 3 | — |
| Basil | Feb 15 – Mar 1 | Apr 5 – Apr 19 | — | — |
| Peas | — | — | Feb 15 – Mar 8 | Aug 23 – Sep 13 |
| Spinach | — | — | Feb 15 – Mar 8 | Sep 20 – Oct 11 |
| Radishes | — | — | Feb 22 – Apr 5 | Oct 4 – Oct 25 |
| Cucumbers | Mar 1 – Mar 8 | Apr 12 – Apr 19 | Apr 5 – Apr 19 | Aug 30 – Sep 13 |
| Zucchini & Summer Squash | Mar 1 – Mar 8 | — | Apr 5 – Apr 19 | Sep 6 – Sep 20 |
| Winter Squash & Pumpkins | Mar 1 – Mar 8 | — | Apr 5 – Apr 19 | — |
| Melons & Watermelon | Mar 1 – Mar 8 | Apr 12 – Apr 26 | — | — |
| Carrots | — | — | Mar 8 – Apr 5 | Aug 23 – Sep 6 |
| Beets | — | — | Mar 8 – Apr 5 | Sep 6 – Sep 20 |
| Potatoes | — | — | Mar 8 – Mar 29 | — |
| Swiss Chard | — | — | Mar 15 – Apr 12 | Sep 6 – Sep 20 |
| Cilantro | — | — | Mar 15 – Apr 5 | Sep 20 – Oct 11 |
| Green Beans | — | — | Apr 5 – Apr 26 | Aug 30 – Sep 13 |
| Sweet Corn | — | — | Apr 5 – Apr 19 | — |
| Sweet Potatoes | — | Apr 12 – May 3 | — | — |
| Garlic | — | — | — | Nov 1 – Dec 6 |
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 Aberdeen, WA weather station, 3 km away (elevation 10 ft (3 m)).
Frost dates near Aberdeen
- Cosmopolis Mar 29 · Nov 15
- Hoquiam Mar 30 · Nov 14
- Satsop May 1 · Oct 14
- Montesano Apr 23 · Oct 20
- Westport Mar 29 · Nov 7
- Ocean Shores Mar 30 · Nov 14
- Grayland Mar 29 · Nov 7
- Elma May 1 · Oct 14
- Copalis Beach Apr 26 · Oct 22
- Copalis Crossing Apr 26 · Oct 22
Frequently asked questions
When is the last frost in Aberdeen, WA?
The median last spring frost in Aberdeen, WA is March 29. There is still about a 10% chance of frost after April 20, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Aberdeen, WA?
The median first fall frost is November 15, with about a 10% chance of frost before October 27.
How long is the growing season in Aberdeen, WA?
About 231 days between the median last spring frost and first fall frost.
What planting zone is Aberdeen, WA?
Aberdeen, WA is in USDA hardiness zone 8b.