Rockport, WA frost dates
Last spring frostApr 16median date
First fall frostOct 25median date
Growing season192 daysfrost-free
Hardiness zone7aZone 7a
How Rockport compares
- In 8 years out of 10, the last spring frost in Rockport falls between March 26 and May 6, a 41-day window. The first fall frost falls between October 10 and November 11.
- The median last frost is 5 days earlier than the Washington median of Apr 21.
- Its 192-day growing season is longer than 57% of the 491 Washington places with a regular frost season (state median 182 days).
- The last frost is typical for zone 7a, where the median is Apr 16.
- The weather station records an average of 79 nights a year at or below 32°F.
- Compared with Marysville, WA, 63 km away, the last frost here is 23 days later than there and the growing season is 31 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 26 |
| 50% (median) | April 16 |
| 10% (safe for tender plants) | May 6 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 10 |
| 50% (median) | October 25 |
| 90% (late) | November 11 |
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 Rockport, WA
Rockport, WA frost dates — last frost Apr 16, first frost Oct 25, zone 7a. whenisthelastfrost.com
Crop
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Start indoors: Jan 22 to Feb 5Transplant outside: Mar 19 to Apr 2
Start indoors: Feb 5 to Feb 19Transplant outside: Apr 30 to May 14
Start indoors: Feb 5 to Feb 19Transplant outside: Apr 30 to May 14
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 23 to May 7
Start indoors: Feb 19 to Mar 5Transplant outside: Mar 26 to Apr 9Sow outdoors: Mar 19 to Apr 23Plant for fall: Aug 30 to Sep 27
Start indoors: Feb 19 to Mar 5Transplant outside: Mar 19 to Apr 2Sow outdoors: Mar 19 to Apr 2Plant for fall: Aug 16 to Sep 6
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 2 to Apr 16Plant for fall: Jul 19 to Aug 9
Start indoors: Feb 19 to Mar 5Transplant outside: Mar 26 to Apr 9Plant for fall: Jul 19 to Aug 9
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 2 to Apr 16Plant for fall: Jul 19 to Aug 9
Start indoors: Mar 5 to Mar 19Transplant outside: May 7 to May 21Sow outdoors: May 7 to May 21
Start indoors: Mar 5 to Mar 19Transplant outside: Apr 23 to May 7
Sow outdoors: Mar 5 to Mar 26Plant for fall: Aug 2 to Aug 23
Sow outdoors: Mar 5 to Mar 26Plant for fall: Aug 30 to Sep 20
Sow outdoors: Mar 12 to Apr 23Plant for fall: Sep 13 to Oct 4
Start indoors: Mar 19 to Mar 26Transplant outside: Apr 30 to May 7Sow outdoors: Apr 23 to May 7Plant for fall: Aug 9 to Aug 23
Start indoors: Mar 19 to Mar 26Sow outdoors: Apr 23 to May 7Plant for fall: Aug 16 to Aug 30
Start indoors: Mar 19 to Mar 26Sow outdoors: Apr 23 to May 7
Start indoors: Mar 19 to Mar 26Transplant outside: Apr 30 to May 14
Sow outdoors: Mar 26 to Apr 23Plant for fall: Aug 2 to Aug 16
Sow outdoors: Mar 26 to Apr 23Plant for fall: Aug 16 to Aug 30
Sow outdoors: Mar 26 to Apr 16
Sow outdoors: Apr 2 to Apr 30Plant for fall: Aug 16 to Aug 30
Sow outdoors: Apr 2 to Apr 23Plant for fall: Aug 30 to Sep 20
Sow outdoors: Apr 23 to May 14Plant for fall: Aug 9 to Aug 23
Sow outdoors: Apr 23 to May 7
Transplant outside: Apr 30 to May 21
Plant for fall: Oct 11 to Nov 15
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Rockport, WA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 22 – Feb 5 | Mar 19 – Apr 2 | — | — |
| Peppers | Feb 5 – Feb 19 | Apr 30 – May 14 | — | — |
| Eggplant | Feb 5 – Feb 19 | Apr 30 – May 14 | — | — |
| Tomatoes | Feb 19 – Mar 5 | Apr 23 – May 7 | — | — |
| Lettuce | Feb 19 – Mar 5 | Mar 26 – Apr 9 | Mar 19 – Apr 23 | Aug 30 – Sep 27 |
| Kale | Feb 19 – Mar 5 | Mar 19 – Apr 2 | Mar 19 – Apr 2 | Aug 16 – Sep 6 |
| Broccoli | Feb 19 – Mar 5 | Apr 2 – Apr 16 | — | Jul 19 – Aug 9 |
| Cabbage | Feb 19 – Mar 5 | Mar 26 – Apr 9 | — | Jul 19 – Aug 9 |
| Cauliflower | Feb 19 – Mar 5 | Apr 2 – Apr 16 | — | Jul 19 – Aug 9 |
| Okra | Mar 5 – Mar 19 | May 7 – May 21 | May 7 – May 21 | — |
| Basil | Mar 5 – Mar 19 | Apr 23 – May 7 | — | — |
| Peas | — | — | Mar 5 – Mar 26 | Aug 2 – Aug 23 |
| Spinach | — | — | Mar 5 – Mar 26 | Aug 30 – Sep 20 |
| Radishes | — | — | Mar 12 – Apr 23 | Sep 13 – Oct 4 |
| Cucumbers | Mar 19 – Mar 26 | Apr 30 – May 7 | Apr 23 – May 7 | Aug 9 – Aug 23 |
| Zucchini & Summer Squash | Mar 19 – Mar 26 | — | Apr 23 – May 7 | Aug 16 – Aug 30 |
| Winter Squash & Pumpkins | Mar 19 – Mar 26 | — | Apr 23 – May 7 | — |
| Melons & Watermelon | Mar 19 – Mar 26 | Apr 30 – May 14 | — | — |
| Carrots | — | — | Mar 26 – Apr 23 | Aug 2 – Aug 16 |
| Beets | — | — | Mar 26 – Apr 23 | Aug 16 – Aug 30 |
| Potatoes | — | — | Mar 26 – Apr 16 | — |
| Swiss Chard | — | — | Apr 2 – Apr 30 | Aug 16 – Aug 30 |
| Cilantro | — | — | Apr 2 – Apr 23 | Aug 30 – Sep 20 |
| Green Beans | — | — | Apr 23 – May 14 | Aug 9 – Aug 23 |
| Sweet Corn | — | — | Apr 23 – May 7 | — |
| Sweet Potatoes | — | Apr 30 – May 21 | — | — |
| Garlic | — | — | — | Oct 11 – Nov 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 Darrington 21 Nne, WA weather station, 11 km away (elevation 407 ft (124 m)).
Frost dates near Rockport
- Concrete Mar 28 · Nov 14
- Marblemount Apr 16 · Oct 25
- Darrington Apr 16 · Oct 23
- Hamilton Mar 28 · Nov 14
- Lyman Mar 27 · Nov 6
- Mount Vernon Mar 27 · Nov 6
- Sedro Woolley Mar 27 · Nov 6
- Clearlake Mar 27 · Nov 6
- Acme Mar 27 · Nov 6
- Arlington Apr 22 · Oct 19
Frequently asked questions
When is the last frost in Rockport, WA?
The median last spring frost in Rockport, WA is April 16. There is still about a 10% chance of frost after May 6, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Rockport, WA?
The median first fall frost is October 25, with about a 10% chance of frost before October 10.
How long is the growing season in Rockport, WA?
About 192 days between the median last spring frost and first fall frost.
What planting zone is Rockport, WA?
Rockport, WA is in USDA hardiness zone 7a.