Wellpinit, WA frost dates
Last spring frostJun 6median date
First fall frostSep 11median date
Growing season97 daysfrost-free
Hardiness zone7aZone 7a
How Wellpinit compares
- In 8 years out of 10, the last spring frost in Wellpinit falls between May 13 and July 5, a 53-day window. The first fall frost falls between August 26 and September 28.
- The median last frost is 46 days later than the Washington median of Apr 21.
- Its 97-day growing season is among the shortest of the 491 Washington places with a regular frost season.
- The last frost is 51 days later 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 175 nights a year at or below 32°F.
- Compared with Spokane, WA, 49 km away, the last frost here is 41 days later than there and the growing season is 75 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 13 |
| 50% (median) | June 6 |
| 10% (safe for tender plants) | July 5 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | August 26 |
| 50% (median) | September 11 |
| 90% (late) | September 28 |
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 Wellpinit, WA
Wellpinit, WA frost dates — last frost Jun 6, first frost Sep 11, zone 7a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 14 to Mar 28Transplant outside: May 9 to May 23
Start indoors: Mar 28 to Apr 11Transplant outside: Jun 20 to Jul 4
Start indoors: Mar 28 to Apr 11Transplant outside: Jun 20 to Jul 4
Start indoors: Apr 11 to Apr 25Transplant outside: Jun 13 to Jun 27
Start indoors: Apr 11 to Apr 25Transplant outside: May 16 to May 30Sow outdoors: May 9 to Jun 13Plant for fall: Jul 17 to Aug 14
Start indoors: Apr 11 to Apr 25Transplant outside: May 9 to May 23Sow outdoors: May 9 to May 23Plant for fall: Jul 3 to Jul 24
Start indoors: Apr 11 to Apr 25Transplant outside: May 23 to Jun 6
Start indoors: Apr 11 to Apr 25Transplant outside: May 16 to May 30
Start indoors: Apr 11 to Apr 25Transplant outside: May 23 to Jun 6
Start indoors: Apr 25 to May 9Transplant outside: Jun 27 to Jul 11Sow outdoors: Jun 27 to Jul 11
Start indoors: Apr 25 to May 9Transplant outside: Jun 13 to Jun 27
Sow outdoors: Apr 25 to May 16
Sow outdoors: Apr 25 to May 16Plant for fall: Jul 17 to Aug 7
Sow outdoors: May 2 to Jun 13Plant for fall: Jul 31 to Aug 21
Start indoors: May 9 to May 16Transplant outside: Jun 20 to Jun 27Sow outdoors: Jun 13 to Jun 27
Start indoors: May 9 to May 16Sow outdoors: Jun 13 to Jun 27
Start indoors: May 9 to May 16Sow outdoors: Jun 13 to Jun 27
Start indoors: May 9 to May 16Transplant outside: Jun 20 to Jul 4
Sow outdoors: May 16 to Jun 13
Sow outdoors: May 16 to Jun 13Plant for fall: Jul 3 to Jul 17
Sow outdoors: May 16 to Jun 6
Sow outdoors: May 23 to Jun 20
Sow outdoors: May 23 to Jun 13Plant for fall: Jul 17 to Aug 7
Sow outdoors: Jun 13 to Jul 4
Sow outdoors: Jun 13 to Jun 27
Transplant outside: Jun 20 to Jul 11
Plant for fall: Aug 28 to Oct 2
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Wellpinit, WA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 14 – Mar 28 | May 9 – May 23 | — | — |
| Peppers | Mar 28 – Apr 11 | Jun 20 – Jul 4 | — | — |
| Eggplant | Mar 28 – Apr 11 | Jun 20 – Jul 4 | — | — |
| Tomatoes | Apr 11 – Apr 25 | Jun 13 – Jun 27 | — | — |
| Lettuce | Apr 11 – Apr 25 | May 16 – May 30 | May 9 – Jun 13 | Jul 17 – Aug 14 |
| Kale | Apr 11 – Apr 25 | May 9 – May 23 | May 9 – May 23 | Jul 3 – Jul 24 |
| Broccoli | Apr 11 – Apr 25 | May 23 – Jun 6 | — | — |
| Cabbage | Apr 11 – Apr 25 | May 16 – May 30 | — | — |
| Cauliflower | Apr 11 – Apr 25 | May 23 – Jun 6 | — | — |
| Okra | Apr 25 – May 9 | Jun 27 – Jul 11 | Jun 27 – Jul 11 | — |
| Basil | Apr 25 – May 9 | Jun 13 – Jun 27 | — | — |
| Peas | — | — | Apr 25 – May 16 | — |
| Spinach | — | — | Apr 25 – May 16 | Jul 17 – Aug 7 |
| Radishes | — | — | May 2 – Jun 13 | Jul 31 – Aug 21 |
| Cucumbers | May 9 – May 16 | Jun 20 – Jun 27 | Jun 13 – Jun 27 | — |
| Zucchini & Summer Squash | May 9 – May 16 | — | Jun 13 – Jun 27 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 97 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 9 – May 16 | — | Jun 13 – Jun 27 | — |
| Melons & Watermelon Warning: Your frost-free season is about 97 days, which is tight for melons & watermelon (85+ days). Choose early varieties and use transplants or row covers. | May 9 – May 16 | Jun 20 – Jul 4 | — | — |
| Carrots | — | — | May 16 – Jun 13 | — |
| Beets | — | — | May 16 – Jun 13 | Jul 3 – Jul 17 |
| Potatoes | — | — | May 16 – Jun 6 | — |
| Swiss Chard | — | — | May 23 – Jun 20 | — |
| Cilantro | — | — | May 23 – Jun 13 | Jul 17 – Aug 7 |
| Green Beans | — | — | Jun 13 – Jul 4 | — |
| Sweet Corn | — | — | Jun 13 – Jun 27 | — |
| Sweet Potatoes Warning: Your frost-free season is about 97 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 20 – Jul 11 | — | — |
| Garlic | — | — | — | Aug 28 – Oct 2 |
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 Davenport, WA weather station, 27 km away (elevation 2,369 ft (722 m)).
Frost dates near Wellpinit
- Ford May 22 · Sep 14
- Tumtum May 10 · Sep 26
- Springdale May 22 · Sep 14
- Reardan May 10 · Sep 26
- Fruitland Jun 6 · Sep 11
- Davenport Jun 6 · Sep 11
- Nine Mile Falls May 10 · Sep 26
- Hunters May 16 · Sep 15
- Valley May 16 · Sep 15
- Lincoln Jun 1 · Sep 22
Frequently asked questions
When is the last frost in Wellpinit, WA?
The median last spring frost in Wellpinit, WA is June 6. There is still about a 10% chance of frost after July 5, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Wellpinit, WA?
The median first fall frost is September 11, with about a 10% chance of frost before August 26.
How long is the growing season in Wellpinit, WA?
About 97 days between the median last spring frost and first fall frost.
What planting zone is Wellpinit, WA?
Wellpinit, WA is in USDA hardiness zone 7a.