Chimacum, WA frost dates
Last spring frostMar 1median date
First fall frostNov 28median date
Growing season272 daysfrost-free
Hardiness zone8bZone 8b
How Chimacum compares
- In 8 years out of 10, the last spring frost in Chimacum falls between February 3 and March 23, a 48-day window. The first fall frost falls between November 9 and December 26.
- The median last frost is 51 days earlier than the Washington median of Apr 21.
- Its 272-day growing season is among the longest of the 491 Washington places with a regular frost season.
- The last frost is 15 days earlier 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 14 nights a year at or below 32°F.
- Compared with Everett, WA, 42 km away, the last frost here is 8 days earlier than there and the growing season is 19 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | February 3 |
| 50% (median) | March 1 |
| 10% (safe for tender plants) | March 23 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 9 |
| 50% (median) | November 28 |
| 90% (late) | December 26 |
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 Chimacum, WA
Chimacum, WA frost dates — last frost Mar 1, first frost Nov 28, zone 8b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 7 to Dec 21Transplant outside: Feb 1 to Feb 15
Start indoors: Dec 21 to Jan 4Start indoors: Dec 21 to Jan 4Transplant outside: Mar 15 to Mar 29
Start indoors: Dec 21 to Jan 4Start indoors: Dec 21 to Jan 4Transplant outside: Mar 15 to Mar 29
Start indoors: Jan 4 to Jan 18Transplant outside: Mar 8 to Mar 22
Start indoors: Jan 4 to Jan 18Transplant outside: Feb 8 to Feb 22Sow outdoors: Feb 1 to Mar 8Plant for fall: Oct 3 to Oct 31
Start indoors: Jan 4 to Jan 18Transplant outside: Feb 1 to Feb 15Sow outdoors: Feb 1 to Feb 15Plant for fall: Sep 19 to Oct 10
Start indoors: Jan 4 to Jan 18Transplant outside: Feb 15 to Mar 1Plant for fall: Aug 22 to Sep 12
Start indoors: Jan 4 to Jan 18Transplant outside: Feb 8 to Feb 22Plant for fall: Aug 22 to Sep 12
Start indoors: Jan 4 to Jan 18Transplant outside: Feb 15 to Mar 1Plant for fall: Aug 22 to Sep 12
Start indoors: Jan 18 to Feb 1Transplant outside: Mar 22 to Apr 5Sow outdoors: Mar 22 to Apr 5
Start indoors: Jan 18 to Feb 1Transplant outside: Mar 8 to Mar 22
Sow outdoors: Jan 18 to Feb 8Plant for fall: Sep 5 to Sep 26
Sow outdoors: Jan 18 to Feb 8Plant for fall: Oct 3 to Oct 24
Sow outdoors: Jan 25 to Mar 8Plant for fall: Oct 17 to Nov 7
Start indoors: Feb 1 to Feb 8Transplant outside: Mar 15 to Mar 22Sow outdoors: Mar 8 to Mar 22Plant for fall: Sep 12 to Sep 26
Start indoors: Feb 1 to Feb 8Sow outdoors: Mar 8 to Mar 22Plant for fall: Sep 19 to Oct 3
Start indoors: Feb 1 to Feb 8Sow outdoors: Mar 8 to Mar 22
Start indoors: Feb 1 to Feb 8Transplant outside: Mar 15 to Mar 29
Sow outdoors: Feb 8 to Mar 8Plant for fall: Sep 5 to Sep 19
Sow outdoors: Feb 8 to Mar 8Plant for fall: Sep 19 to Oct 3
Sow outdoors: Feb 8 to Mar 1
Sow outdoors: Feb 15 to Mar 15Plant for fall: Sep 19 to Oct 3
Sow outdoors: Feb 15 to Mar 8Plant for fall: Oct 3 to Oct 24
Sow outdoors: Mar 8 to Mar 29Plant for fall: Sep 12 to Sep 26
Sow outdoors: Mar 8 to Mar 22
Transplant outside: Mar 15 to Apr 5
Plant for fall: Nov 14 to Dec 19
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Chimacum, WA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 7 – Dec 21 | Feb 1 – Feb 15 | — | — |
| Peppers | Dec 21 – Jan 4 | Mar 15 – Mar 29 | — | — |
| Eggplant | Dec 21 – Jan 4 | Mar 15 – Mar 29 | — | — |
| Tomatoes | Jan 4 – Jan 18 | Mar 8 – Mar 22 | — | — |
| Lettuce | Jan 4 – Jan 18 | Feb 8 – Feb 22 | Feb 1 – Mar 8 | Oct 3 – Oct 31 |
| Kale | Jan 4 – Jan 18 | Feb 1 – Feb 15 | Feb 1 – Feb 15 | Sep 19 – Oct 10 |
| Broccoli | Jan 4 – Jan 18 | Feb 15 – Mar 1 | — | Aug 22 – Sep 12 |
| Cabbage | Jan 4 – Jan 18 | Feb 8 – Feb 22 | — | Aug 22 – Sep 12 |
| Cauliflower | Jan 4 – Jan 18 | Feb 15 – Mar 1 | — | Aug 22 – Sep 12 |
| Okra | Jan 18 – Feb 1 | Mar 22 – Apr 5 | Mar 22 – Apr 5 | — |
| Basil | Jan 18 – Feb 1 | Mar 8 – Mar 22 | — | — |
| Peas | — | — | Jan 18 – Feb 8 | Sep 5 – Sep 26 |
| Spinach | — | — | Jan 18 – Feb 8 | Oct 3 – Oct 24 |
| Radishes | — | — | Jan 25 – Mar 8 | Oct 17 – Nov 7 |
| Cucumbers | Feb 1 – Feb 8 | Mar 15 – Mar 22 | Mar 8 – Mar 22 | Sep 12 – Sep 26 |
| Zucchini & Summer Squash | Feb 1 – Feb 8 | — | Mar 8 – Mar 22 | Sep 19 – Oct 3 |
| Winter Squash & Pumpkins | Feb 1 – Feb 8 | — | Mar 8 – Mar 22 | — |
| Melons & Watermelon | Feb 1 – Feb 8 | Mar 15 – Mar 29 | — | — |
| Carrots | — | — | Feb 8 – Mar 8 | Sep 5 – Sep 19 |
| Beets | — | — | Feb 8 – Mar 8 | Sep 19 – Oct 3 |
| Potatoes | — | — | Feb 8 – Mar 1 | — |
| Swiss Chard | — | — | Feb 15 – Mar 15 | Sep 19 – Oct 3 |
| Cilantro | — | — | Feb 15 – Mar 8 | Oct 3 – Oct 24 |
| Green Beans | — | — | Mar 8 – Mar 29 | Sep 12 – Sep 26 |
| Sweet Corn | — | — | Mar 8 – Mar 22 | — |
| Sweet Potatoes | — | Mar 15 – Apr 5 | — | — |
| Garlic | — | — | — | Nov 14 – Dec 19 |
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 Port Townsend, WA weather station, 15 km away (elevation 102 ft (31 m)).
Frost dates near Chimacum
- Port Hadlock Mar 1 · Nov 28
- Nordland Mar 1 · Nov 28
- Port Ludlow Apr 11 · Oct 28
- Port Townsend Mar 1 · Nov 28
- Freeland Mar 1 · Nov 28
- Quilcene Apr 11 · Oct 28
- Hansville Mar 9 · Nov 17
- Greenbank Mar 1 · Nov 28
- Port Gamble Mar 9 · Nov 17
- Langley Mar 9 · Nov 17
Frequently asked questions
When is the last frost in Chimacum, WA?
The median last spring frost in Chimacum, WA is March 1. There is still about a 10% chance of frost after March 23, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Chimacum, WA?
The median first fall frost is November 28, with about a 10% chance of frost before November 9.
How long is the growing season in Chimacum, WA?
About 272 days between the median last spring frost and first fall frost.
What planting zone is Chimacum, WA?
Chimacum, WA is in USDA hardiness zone 8b.