Washougal, WA frost dates
Last spring frostApr 29median date
First fall frostOct 22median date
Growing season176 daysfrost-free
Hardiness zone8bZone 8b
How Washougal compares
- In 8 years out of 10, the last spring frost in Washougal falls between April 5 and May 15, a 40-day window. The first fall frost falls between September 27 and November 15.
- The median last frost is 8 days later than the Washington median of Apr 21.
- Its 176-day growing season is longer than 40% of the 491 Washington places with a regular frost season (state median 182 days).
- The last frost is 44 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 81 nights a year at or below 32°F.
- Compared with Gresham, OR, 14 km away, the last frost here is 44 days later than there and the growing season is 73 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 5 |
| 50% (median) | April 29 |
| 10% (safe for tender plants) | May 15 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 27 |
| 50% (median) | October 22 |
| 90% (late) | November 15 |
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 Washougal, WA
Washougal, WA frost dates — last frost Apr 29, first frost Oct 22, zone 8b. whenisthelastfrost.com
Crop
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Start indoors: Feb 4 to Feb 18Transplant outside: Apr 1 to Apr 15
Start indoors: Feb 18 to Mar 4Transplant outside: May 13 to May 27
Start indoors: Feb 18 to Mar 4Transplant outside: May 13 to May 27
Start indoors: Mar 4 to Mar 18Transplant outside: May 6 to May 20
Start indoors: Mar 4 to Mar 18Transplant outside: Apr 8 to Apr 22Sow outdoors: Apr 1 to May 6Plant for fall: Aug 27 to Sep 24
Start indoors: Mar 4 to Mar 18Transplant outside: Apr 1 to Apr 15Sow outdoors: Apr 1 to Apr 15Plant for fall: Aug 13 to Sep 3
Start indoors: Mar 4 to Mar 18Transplant outside: Apr 15 to Apr 29Plant for fall: Jul 16 to Aug 6
Start indoors: Mar 4 to Mar 18Transplant outside: Apr 8 to Apr 22Plant for fall: Jul 16 to Aug 6
Start indoors: Mar 4 to Mar 18Transplant outside: Apr 15 to Apr 29Plant for fall: Jul 16 to Aug 6
Start indoors: Mar 18 to Apr 1Transplant outside: May 20 to Jun 3Sow outdoors: May 20 to Jun 3
Start indoors: Mar 18 to Apr 1Transplant outside: May 6 to May 20
Sow outdoors: Mar 18 to Apr 8Plant for fall: Jul 30 to Aug 20
Sow outdoors: Mar 18 to Apr 8Plant for fall: Aug 27 to Sep 17
Sow outdoors: Mar 25 to May 6Plant for fall: Sep 10 to Oct 1
Start indoors: Apr 1 to Apr 8Transplant outside: May 13 to May 20Sow outdoors: May 6 to May 20Plant for fall: Aug 6 to Aug 20
Start indoors: Apr 1 to Apr 8Sow outdoors: May 6 to May 20Plant for fall: Aug 13 to Aug 27
Start indoors: Apr 1 to Apr 8Sow outdoors: May 6 to May 20
Start indoors: Apr 1 to Apr 8Transplant outside: May 13 to May 27
Sow outdoors: Apr 8 to May 6Plant for fall: Jul 30 to Aug 13
Sow outdoors: Apr 8 to May 6Plant for fall: Aug 13 to Aug 27
Sow outdoors: Apr 8 to Apr 29
Sow outdoors: Apr 15 to May 13Plant for fall: Aug 13 to Aug 27
Sow outdoors: Apr 15 to May 6Plant for fall: Aug 27 to Sep 17
Sow outdoors: May 6 to May 27Plant for fall: Aug 6 to Aug 20
Sow outdoors: May 6 to May 20
Transplant outside: May 13 to Jun 3
Plant for fall: Oct 8 to Nov 12
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Washougal, WA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 4 – Feb 18 | Apr 1 – Apr 15 | — | — |
| Peppers | Feb 18 – Mar 4 | May 13 – May 27 | — | — |
| Eggplant | Feb 18 – Mar 4 | May 13 – May 27 | — | — |
| Tomatoes | Mar 4 – Mar 18 | May 6 – May 20 | — | — |
| Lettuce | Mar 4 – Mar 18 | Apr 8 – Apr 22 | Apr 1 – May 6 | Aug 27 – Sep 24 |
| Kale | Mar 4 – Mar 18 | Apr 1 – Apr 15 | Apr 1 – Apr 15 | Aug 13 – Sep 3 |
| Broccoli | Mar 4 – Mar 18 | Apr 15 – Apr 29 | — | Jul 16 – Aug 6 |
| Cabbage | Mar 4 – Mar 18 | Apr 8 – Apr 22 | — | Jul 16 – Aug 6 |
| Cauliflower | Mar 4 – Mar 18 | Apr 15 – Apr 29 | — | Jul 16 – Aug 6 |
| Okra | Mar 18 – Apr 1 | May 20 – Jun 3 | May 20 – Jun 3 | — |
| Basil | Mar 18 – Apr 1 | May 6 – May 20 | — | — |
| Peas | — | — | Mar 18 – Apr 8 | Jul 30 – Aug 20 |
| Spinach | — | — | Mar 18 – Apr 8 | Aug 27 – Sep 17 |
| Radishes | — | — | Mar 25 – May 6 | Sep 10 – Oct 1 |
| Cucumbers | Apr 1 – Apr 8 | May 13 – May 20 | May 6 – May 20 | Aug 6 – Aug 20 |
| Zucchini & Summer Squash | Apr 1 – Apr 8 | — | May 6 – May 20 | Aug 13 – Aug 27 |
| Winter Squash & Pumpkins | Apr 1 – Apr 8 | — | May 6 – May 20 | — |
| Melons & Watermelon | Apr 1 – Apr 8 | May 13 – May 27 | — | — |
| Carrots | — | — | Apr 8 – May 6 | Jul 30 – Aug 13 |
| Beets | — | — | Apr 8 – May 6 | Aug 13 – Aug 27 |
| Potatoes | — | — | Apr 8 – Apr 29 | — |
| Swiss Chard | — | — | Apr 15 – May 13 | Aug 13 – Aug 27 |
| Cilantro | — | — | Apr 15 – May 6 | Aug 27 – Sep 17 |
| Green Beans | — | — | May 6 – May 27 | Aug 6 – Aug 20 |
| Sweet Corn | — | — | May 6 – May 20 | — |
| Sweet Potatoes | — | May 13 – Jun 3 | — | — |
| Garlic | — | — | — | Oct 8 – Nov 12 |
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 Skamania Fish Hatchery, WA weather station, 8 km away (elevation 436 ft (133 m)).
Frost dates near Washougal
- Camas Mar 16 · Nov 20
- Brush Prairie Apr 26 · Oct 16
- Vancouver Apr 26 · Oct 18
- North Bonneville Mar 14 · Nov 27
- Battle Ground Apr 26 · Oct 16
- Heisson Apr 26 · Oct 16
- Yacolt Apr 26 · Oct 16
- Stevenson Mar 24 · Nov 20
- Ridgefield Apr 26 · Oct 18
- Amboy Apr 26 · Oct 16
Frequently asked questions
When is the last frost in Washougal, WA?
The median last spring frost in Washougal, WA is April 29. There is still about a 10% chance of frost after May 15, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Washougal, WA?
The median first fall frost is October 22, with about a 10% chance of frost before September 27.
How long is the growing season in Washougal, WA?
About 176 days between the median last spring frost and first fall frost.
What planting zone is Washougal, WA?
Washougal, WA is in USDA hardiness zone 8b.