Frost dates for 98907 — Yakima, WA
Last spring frostApr 8median date
First fall frostOct 23median date
Growing season198 daysfrost-free
Hardiness zone7aZone 7a
How Yakima compares
- In 8 years out of 10, the last spring frost in Yakima falls between March 23 and April 28, a 36-day window. The first fall frost falls between October 9 and November 5.
- The median last frost is 13 days earlier than the Washington median of Apr 21.
- Its 198-day growing season is longer than 58% of the 491 Washington places with a regular frost season (state median 182 days).
- The last frost is 8 days earlier than the zone 7a median of Apr 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7a chart.
- The weather station records an average of 109 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 23 |
| 50% (median) | April 8 |
| 10% (safe for tender plants) | April 28 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 9 |
| 50% (median) | October 23 |
| 90% (late) | November 5 |
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 Yakima, WA
Frost dates for 98907 — Yakima, WA — last frost Apr 8, first frost Oct 23, zone 7a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Jan 14 to Jan 28Transplant outside: Mar 11 to Mar 25
Start indoors: Jan 28 to Feb 11Transplant outside: Apr 22 to May 6
Start indoors: Jan 28 to Feb 11Transplant outside: Apr 22 to May 6
Start indoors: Feb 11 to Feb 25Transplant outside: Apr 15 to Apr 29
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 18 to Apr 1Sow outdoors: Mar 11 to Apr 15Plant for fall: Aug 28 to Sep 25
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 11 to Mar 25Sow outdoors: Mar 11 to Mar 25Plant for fall: Aug 14 to Sep 4
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 25 to Apr 8Plant for fall: Jul 17 to Aug 7
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 18 to Apr 1Plant for fall: Jul 17 to Aug 7
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 25 to Apr 8Plant for fall: Jul 17 to Aug 7
Start indoors: Feb 25 to Mar 11Transplant outside: Apr 29 to May 13Sow outdoors: Apr 29 to May 13
Start indoors: Feb 25 to Mar 11Transplant outside: Apr 15 to Apr 29
Sow outdoors: Feb 25 to Mar 18Plant for fall: Jul 31 to Aug 21
Sow outdoors: Feb 25 to Mar 18Plant for fall: Aug 28 to Sep 18
Sow outdoors: Mar 4 to Apr 15Plant for fall: Sep 11 to Oct 2
Start indoors: Mar 11 to Mar 18Transplant outside: Apr 22 to Apr 29Sow outdoors: Apr 15 to Apr 29Plant for fall: Aug 7 to Aug 21
Start indoors: Mar 11 to Mar 18Sow outdoors: Apr 15 to Apr 29Plant for fall: Aug 14 to Aug 28
Start indoors: Mar 11 to Mar 18Sow outdoors: Apr 15 to Apr 29
Start indoors: Mar 11 to Mar 18Transplant outside: Apr 22 to May 6
Sow outdoors: Mar 18 to Apr 15Plant for fall: Jul 31 to Aug 14
Sow outdoors: Mar 18 to Apr 15Plant for fall: Aug 14 to Aug 28
Sow outdoors: Mar 18 to Apr 8
Sow outdoors: Mar 25 to Apr 22Plant for fall: Aug 14 to Aug 28
Sow outdoors: Mar 25 to Apr 15Plant for fall: Aug 28 to Sep 18
Sow outdoors: Apr 15 to May 6Plant for fall: Aug 7 to Aug 21
Sow outdoors: Apr 15 to Apr 29
Transplant outside: Apr 22 to May 13
Plant for fall: Oct 9 to Nov 13
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Yakima, WA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 14 – Jan 28 | Mar 11 – Mar 25 | — | — |
| Peppers | Jan 28 – Feb 11 | Apr 22 – May 6 | — | — |
| Eggplant | Jan 28 – Feb 11 | Apr 22 – May 6 | — | — |
| Tomatoes | Feb 11 – Feb 25 | Apr 15 – Apr 29 | — | — |
| Lettuce | Feb 11 – Feb 25 | Mar 18 – Apr 1 | Mar 11 – Apr 15 | Aug 28 – Sep 25 |
| Kale | Feb 11 – Feb 25 | Mar 11 – Mar 25 | Mar 11 – Mar 25 | Aug 14 – Sep 4 |
| Broccoli | Feb 11 – Feb 25 | Mar 25 – Apr 8 | — | Jul 17 – Aug 7 |
| Cabbage | Feb 11 – Feb 25 | Mar 18 – Apr 1 | — | Jul 17 – Aug 7 |
| Cauliflower | Feb 11 – Feb 25 | Mar 25 – Apr 8 | — | Jul 17 – Aug 7 |
| Okra | Feb 25 – Mar 11 | Apr 29 – May 13 | Apr 29 – May 13 | — |
| Basil | Feb 25 – Mar 11 | Apr 15 – Apr 29 | — | — |
| Peas | — | — | Feb 25 – Mar 18 | Jul 31 – Aug 21 |
| Spinach | — | — | Feb 25 – Mar 18 | Aug 28 – Sep 18 |
| Radishes | — | — | Mar 4 – Apr 15 | Sep 11 – Oct 2 |
| Cucumbers | Mar 11 – Mar 18 | Apr 22 – Apr 29 | Apr 15 – Apr 29 | Aug 7 – Aug 21 |
| Zucchini & Summer Squash | Mar 11 – Mar 18 | — | Apr 15 – Apr 29 | Aug 14 – Aug 28 |
| Winter Squash & Pumpkins | Mar 11 – Mar 18 | — | Apr 15 – Apr 29 | — |
| Melons & Watermelon | Mar 11 – Mar 18 | Apr 22 – May 6 | — | — |
| Carrots | — | — | Mar 18 – Apr 15 | Jul 31 – Aug 14 |
| Beets | — | — | Mar 18 – Apr 15 | Aug 14 – Aug 28 |
| Potatoes | — | — | Mar 18 – Apr 8 | — |
| Swiss Chard | — | — | Mar 25 – Apr 22 | Aug 14 – Aug 28 |
| Cilantro | — | — | Mar 25 – Apr 15 | Aug 28 – Sep 18 |
| Green Beans | — | — | Apr 15 – May 6 | Aug 7 – Aug 21 |
| Sweet Corn | — | — | Apr 15 – Apr 29 | — |
| Sweet Potatoes | — | Apr 22 – May 13 | — | — |
| Garlic | — | — | — | Oct 9 – Nov 13 |
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 Yakima #2, WA weather station, 5 km away (elevation 1,142 ft (348 m)).
ZIP codes in Yakima: 98901 98902 98903 98904 98907 98908 98909
Frost dates near Yakima
- Selah May 5 · Oct 4
- Cowiche Apr 8 · Oct 23
- Tieton Apr 8 · Oct 23
- Parker Apr 21 · Oct 15
- Moxee May 8 · Oct 4
- Wapato Apr 21 · Oct 15
- Harrah Apr 21 · Oct 15
- Brownstown Apr 21 · Oct 15
Frequently asked questions
When is the last frost in Yakima, WA?
The median last spring frost in Yakima, WA is April 8. There is still about a 10% chance of frost after April 28, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Yakima, WA?
The median first fall frost is October 23, with about a 10% chance of frost before October 9.
How long is the growing season in Yakima, WA?
About 198 days between the median last spring frost and first fall frost.
What planting zone is Yakima, WA?
Yakima, WA is in USDA hardiness zone 7a.