Echo, OR frost dates
Last spring frostApr 26median date
First fall frostOct 10median date
Growing season167 daysfrost-free
Hardiness zone7aZone 7a
How Echo compares
- In 8 years out of 10, the last spring frost in Echo falls between April 9 and May 10, a 31-day window. The first fall frost falls between September 25 and October 26.
- The median last frost is 10 days later than the Oregon median of Apr 16.
- Its 167-day growing season is longer than 32% of the 345 Oregon places with a regular frost season (state median 193 days).
- The last frost is 10 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 115 nights a year at or below 32°F.
- Compared with Kennewick, WA, 49 km away, the last frost here is 29 days later than there and the growing season is 49 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 9 |
| 50% (median) | April 26 |
| 10% (safe for tender plants) | May 10 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 25 |
| 50% (median) | October 10 |
| 90% (late) | October 26 |
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 Echo, OR
Echo, OR frost dates — last frost Apr 26, first frost Oct 10, zone 7a. whenisthelastfrost.com
Crop
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Start indoors: Feb 1 to Feb 15Transplant outside: Mar 29 to Apr 12
Start indoors: Feb 15 to Mar 1Transplant outside: May 10 to May 24
Start indoors: Feb 15 to Mar 1Transplant outside: May 10 to May 24
Start indoors: Mar 1 to Mar 15Transplant outside: May 3 to May 17
Start indoors: Mar 1 to Mar 15Transplant outside: Apr 5 to Apr 19Sow outdoors: Mar 29 to May 3Plant for fall: Aug 15 to Sep 12
Start indoors: Mar 1 to Mar 15Transplant outside: Mar 29 to Apr 12Sow outdoors: Mar 29 to Apr 12Plant for fall: Aug 1 to Aug 22
Start indoors: Mar 1 to Mar 15Transplant outside: Apr 12 to Apr 26Plant for fall: Jul 4 to Jul 25
Start indoors: Mar 1 to Mar 15Transplant outside: Apr 5 to Apr 19Plant for fall: Jul 4 to Jul 25
Start indoors: Mar 1 to Mar 15Transplant outside: Apr 12 to Apr 26Plant for fall: Jul 4 to Jul 25
Start indoors: Mar 15 to Mar 29Transplant outside: May 17 to May 31Sow outdoors: May 17 to May 31
Start indoors: Mar 15 to Mar 29Transplant outside: May 3 to May 17
Sow outdoors: Mar 15 to Apr 5Plant for fall: Jul 18 to Aug 8
Sow outdoors: Mar 15 to Apr 5Plant for fall: Aug 15 to Sep 5
Sow outdoors: Mar 22 to May 3Plant for fall: Aug 29 to Sep 19
Start indoors: Mar 29 to Apr 5Transplant outside: May 10 to May 17Sow outdoors: May 3 to May 17Plant for fall: Jul 25 to Aug 8
Start indoors: Mar 29 to Apr 5Sow outdoors: May 3 to May 17Plant for fall: Aug 1 to Aug 15
Start indoors: Mar 29 to Apr 5Sow outdoors: May 3 to May 17
Start indoors: Mar 29 to Apr 5Transplant outside: May 10 to May 24
Sow outdoors: Apr 5 to May 3Plant for fall: Jul 18 to Aug 1
Sow outdoors: Apr 5 to May 3Plant for fall: Aug 1 to Aug 15
Sow outdoors: Apr 5 to Apr 26
Sow outdoors: Apr 12 to May 10Plant for fall: Aug 1 to Aug 15
Sow outdoors: Apr 12 to May 3Plant for fall: Aug 15 to Sep 5
Sow outdoors: May 3 to May 24Plant for fall: Jul 25 to Aug 8
Sow outdoors: May 3 to May 17
Transplant outside: May 10 to May 31
Plant for fall: Sep 26 to Oct 31
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Echo, OR
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 1 – Feb 15 | Mar 29 – Apr 12 | — | — |
| Peppers | Feb 15 – Mar 1 | May 10 – May 24 | — | — |
| Eggplant | Feb 15 – Mar 1 | May 10 – May 24 | — | — |
| Tomatoes | Mar 1 – Mar 15 | May 3 – May 17 | — | — |
| Lettuce | Mar 1 – Mar 15 | Apr 5 – Apr 19 | Mar 29 – May 3 | Aug 15 – Sep 12 |
| Kale | Mar 1 – Mar 15 | Mar 29 – Apr 12 | Mar 29 – Apr 12 | Aug 1 – Aug 22 |
| Broccoli | Mar 1 – Mar 15 | Apr 12 – Apr 26 | — | Jul 4 – Jul 25 |
| Cabbage | Mar 1 – Mar 15 | Apr 5 – Apr 19 | — | Jul 4 – Jul 25 |
| Cauliflower | Mar 1 – Mar 15 | Apr 12 – Apr 26 | — | Jul 4 – Jul 25 |
| Okra | Mar 15 – Mar 29 | May 17 – May 31 | May 17 – May 31 | — |
| Basil | Mar 15 – Mar 29 | May 3 – May 17 | — | — |
| Peas | — | — | Mar 15 – Apr 5 | Jul 18 – Aug 8 |
| Spinach | — | — | Mar 15 – Apr 5 | Aug 15 – Sep 5 |
| Radishes | — | — | Mar 22 – May 3 | Aug 29 – Sep 19 |
| Cucumbers | Mar 29 – Apr 5 | May 10 – May 17 | May 3 – May 17 | Jul 25 – Aug 8 |
| Zucchini & Summer Squash | Mar 29 – Apr 5 | — | May 3 – May 17 | Aug 1 – Aug 15 |
| Winter Squash & Pumpkins | Mar 29 – Apr 5 | — | May 3 – May 17 | — |
| Melons & Watermelon | Mar 29 – Apr 5 | May 10 – May 24 | — | — |
| Carrots | — | — | Apr 5 – May 3 | Jul 18 – Aug 1 |
| Beets | — | — | Apr 5 – May 3 | Aug 1 – Aug 15 |
| Potatoes | — | — | Apr 5 – Apr 26 | — |
| Swiss Chard | — | — | Apr 12 – May 10 | Aug 1 – Aug 15 |
| Cilantro | — | — | Apr 12 – May 3 | Aug 15 – Sep 5 |
| Green Beans | — | — | May 3 – May 24 | Jul 25 – Aug 8 |
| Sweet Corn | — | — | May 3 – May 17 | — |
| Sweet Potatoes | — | May 10 – May 31 | — | — |
| Garlic | — | — | — | Sep 26 – Oct 31 |
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 Hermiston Muni Ap, OR weather station, 11 km away (elevation 640 ft (195 m)).
Frost dates near Echo
- Stanfield Apr 26 · Oct 10
- Hermiston Apr 27 · Oct 7
- Umatilla Apr 27 · Oct 7
- Irrigon Apr 14 · Oct 21
- Pendleton Apr 22 · Oct 9
- Helix May 12 · Sep 27
- Boardman Apr 14 · Oct 21
- Pilot Rock May 7 · Oct 4
- Adams May 12 · Sep 27
- Ione Apr 26 · Oct 19
Frequently asked questions
When is the last frost in Echo, OR?
The median last spring frost in Echo, OR is April 26. 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 Echo, OR?
The median first fall frost is October 10, with about a 10% chance of frost before September 25.
How long is the growing season in Echo, OR?
About 167 days between the median last spring frost and first fall frost.
What planting zone is Echo, OR?
Echo, OR is in USDA hardiness zone 7a.