Pateros, WA frost dates
Last spring frostApr 21median date
First fall frostOct 15median date
Growing season177 daysfrost-free
Hardiness zone7aZone 7a
How Pateros compares
- In 8 years out of 10, the last spring frost in Pateros falls between April 1 and May 10, a 39-day window. The first fall frost falls between October 3 and October 29.
- The median last frost is the same as the Washington median of Apr 21.
- Its 177-day growing season is longer than 41% of the 491 Washington places with a regular frost season (state median 182 days).
- The last frost is 5 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 152 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 1 |
| 50% (median) | April 21 |
| 10% (safe for tender plants) | May 10 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 3 |
| 50% (median) | October 15 |
| 90% (late) | October 29 |
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 Pateros, WA
Pateros, WA frost dates — last frost Apr 21, first frost Oct 15, zone 7a. whenisthelastfrost.com
Crop
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Start indoors: Jan 27 to Feb 10Transplant outside: Mar 24 to Apr 7
Start indoors: Feb 10 to Feb 24Transplant outside: May 5 to May 19
Start indoors: Feb 10 to Feb 24Transplant outside: May 5 to May 19
Start indoors: Feb 24 to Mar 10Transplant outside: Apr 28 to May 12
Start indoors: Feb 24 to Mar 10Transplant outside: Mar 31 to Apr 14Sow outdoors: Mar 24 to Apr 28Plant for fall: Aug 20 to Sep 17
Start indoors: Feb 24 to Mar 10Transplant outside: Mar 24 to Apr 7Sow outdoors: Mar 24 to Apr 7Plant for fall: Aug 6 to Aug 27
Start indoors: Feb 24 to Mar 10Transplant outside: Apr 7 to Apr 21Plant for fall: Jul 9 to Jul 30
Start indoors: Feb 24 to Mar 10Transplant outside: Mar 31 to Apr 14Plant for fall: Jul 9 to Jul 30
Start indoors: Feb 24 to Mar 10Transplant outside: Apr 7 to Apr 21Plant for fall: Jul 9 to Jul 30
Start indoors: Mar 10 to Mar 24Transplant outside: May 12 to May 26Sow outdoors: May 12 to May 26
Start indoors: Mar 10 to Mar 24Transplant outside: Apr 28 to May 12
Sow outdoors: Mar 10 to Mar 31Plant for fall: Jul 23 to Aug 13
Sow outdoors: Mar 10 to Mar 31Plant for fall: Aug 20 to Sep 10
Sow outdoors: Mar 17 to Apr 28Plant for fall: Sep 3 to Sep 24
Start indoors: Mar 24 to Mar 31Transplant outside: May 5 to May 12Sow outdoors: Apr 28 to May 12Plant for fall: Jul 30 to Aug 13
Start indoors: Mar 24 to Mar 31Sow outdoors: Apr 28 to May 12Plant for fall: Aug 6 to Aug 20
Start indoors: Mar 24 to Mar 31Sow outdoors: Apr 28 to May 12
Start indoors: Mar 24 to Mar 31Transplant outside: May 5 to May 19
Sow outdoors: Mar 31 to Apr 28Plant for fall: Jul 23 to Aug 6
Sow outdoors: Mar 31 to Apr 28Plant for fall: Aug 6 to Aug 20
Sow outdoors: Mar 31 to Apr 21
Sow outdoors: Apr 7 to May 5Plant for fall: Aug 6 to Aug 20
Sow outdoors: Apr 7 to Apr 28Plant for fall: Aug 20 to Sep 10
Sow outdoors: Apr 28 to May 19Plant for fall: Jul 30 to Aug 13
Sow outdoors: Apr 28 to May 12
Transplant outside: May 5 to May 26
Plant for fall: Oct 1 to Nov 5
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Pateros, WA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 27 – Feb 10 | Mar 24 – Apr 7 | — | — |
| Peppers | Feb 10 – Feb 24 | May 5 – May 19 | — | — |
| Eggplant | Feb 10 – Feb 24 | May 5 – May 19 | — | — |
| Tomatoes | Feb 24 – Mar 10 | Apr 28 – May 12 | — | — |
| Lettuce | Feb 24 – Mar 10 | Mar 31 – Apr 14 | Mar 24 – Apr 28 | Aug 20 – Sep 17 |
| Kale | Feb 24 – Mar 10 | Mar 24 – Apr 7 | Mar 24 – Apr 7 | Aug 6 – Aug 27 |
| Broccoli | Feb 24 – Mar 10 | Apr 7 – Apr 21 | — | Jul 9 – Jul 30 |
| Cabbage | Feb 24 – Mar 10 | Mar 31 – Apr 14 | — | Jul 9 – Jul 30 |
| Cauliflower | Feb 24 – Mar 10 | Apr 7 – Apr 21 | — | Jul 9 – Jul 30 |
| Okra | Mar 10 – Mar 24 | May 12 – May 26 | May 12 – May 26 | — |
| Basil | Mar 10 – Mar 24 | Apr 28 – May 12 | — | — |
| Peas | — | — | Mar 10 – Mar 31 | Jul 23 – Aug 13 |
| Spinach | — | — | Mar 10 – Mar 31 | Aug 20 – Sep 10 |
| Radishes | — | — | Mar 17 – Apr 28 | Sep 3 – Sep 24 |
| Cucumbers | Mar 24 – Mar 31 | May 5 – May 12 | Apr 28 – May 12 | Jul 30 – Aug 13 |
| Zucchini & Summer Squash | Mar 24 – Mar 31 | — | Apr 28 – May 12 | Aug 6 – Aug 20 |
| Winter Squash & Pumpkins | Mar 24 – Mar 31 | — | Apr 28 – May 12 | — |
| Melons & Watermelon | Mar 24 – Mar 31 | May 5 – May 19 | — | — |
| Carrots | — | — | Mar 31 – Apr 28 | Jul 23 – Aug 6 |
| Beets | — | — | Mar 31 – Apr 28 | Aug 6 – Aug 20 |
| Potatoes | — | — | Mar 31 – Apr 21 | — |
| Swiss Chard | — | — | Apr 7 – May 5 | Aug 6 – Aug 20 |
| Cilantro | — | — | Apr 7 – Apr 28 | Aug 20 – Sep 10 |
| Green Beans | — | — | Apr 28 – May 19 | Jul 30 – Aug 13 |
| Sweet Corn | — | — | Apr 28 – May 12 | — |
| Sweet Potatoes | — | May 5 – May 26 | — | — |
| Garlic | — | — | — | Oct 1 – Nov 5 |
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 Methow 2 S, WA weather station, 8 km away (elevation 1,135 ft (346 m)).
Frost dates near Pateros
- Methow Apr 21 · Oct 15
- Brewster Apr 26 · Oct 11
- Manson Apr 17 · Oct 22
- Chelan Apr 17 · Oct 22
- Bridgeport Apr 26 · Oct 11
- Chelan Falls Apr 17 · Oct 22
- Carlton Apr 21 · Oct 15
- Malott Apr 21 · Oct 15
- Twisp May 15 · Sep 22
- Orondo May 14 · Oct 1
Frequently asked questions
When is the last frost in Pateros, WA?
The median last spring frost in Pateros, WA is April 21. There is still about a 10% chance of frost after May 10, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Pateros, WA?
The median first fall frost is October 15, with about a 10% chance of frost before October 3.
How long is the growing season in Pateros, WA?
About 177 days between the median last spring frost and first fall frost.
What planting zone is Pateros, WA?
Pateros, WA is in USDA hardiness zone 7a.