Dufur, OR frost dates
Last spring frostMay 12median date
First fall frostOct 7median date
Growing season148 daysfrost-free
Hardiness zone7bZone 7b
How Dufur compares
- In 8 years out of 10, the last spring frost in Dufur falls between April 25 and May 31, a 36-day window. The first fall frost falls between September 22 and October 23.
- The median last frost is 26 days later than the Oregon median of Apr 16.
- Its 148-day growing season is longer than 23% of the 345 Oregon places with a regular frost season (state median 193 days).
- The last frost is 37 days later than the zone 7b median of Apr 5. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7b chart.
- The weather station records an average of 132 nights a year at or below 32°F.
- Compared with Gresham, OR, 100 km away, the last frost here is 57 days later than there and the growing season is 101 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 25 |
| 50% (median) | May 12 |
| 10% (safe for tender plants) | May 31 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 22 |
| 50% (median) | October 7 |
| 90% (late) | October 23 |
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 Dufur, OR
Dufur, OR frost dates — last frost May 12, first frost Oct 7, zone 7b. whenisthelastfrost.com
Crop
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Start indoors: Feb 17 to Mar 3Transplant outside: Apr 14 to Apr 28
Start indoors: Mar 3 to Mar 17Transplant outside: May 26 to Jun 9
Start indoors: Mar 3 to Mar 17Transplant outside: May 26 to Jun 9
Start indoors: Mar 17 to Mar 31Transplant outside: May 19 to Jun 2
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 21 to May 5Sow outdoors: Apr 14 to May 19Plant for fall: Aug 12 to Sep 9
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 14 to Apr 28Sow outdoors: Apr 14 to Apr 28Plant for fall: Jul 29 to Aug 19
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 28 to May 12Plant for fall: Jul 1 to Jul 22
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 21 to May 5Plant for fall: Jul 1 to Jul 22
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 28 to May 12Plant for fall: Jul 1 to Jul 22
Start indoors: Mar 31 to Apr 14Transplant outside: Jun 2 to Jun 16Sow outdoors: Jun 2 to Jun 16
Start indoors: Mar 31 to Apr 14Transplant outside: May 19 to Jun 2
Sow outdoors: Mar 31 to Apr 21Plant for fall: Jul 15 to Aug 5
Sow outdoors: Mar 31 to Apr 21Plant for fall: Aug 12 to Sep 2
Sow outdoors: Apr 7 to May 19Plant for fall: Aug 26 to Sep 16
Start indoors: Apr 14 to Apr 21Transplant outside: May 26 to Jun 2Sow outdoors: May 19 to Jun 2Plant for fall: Jul 22 to Aug 5
Start indoors: Apr 14 to Apr 21Sow outdoors: May 19 to Jun 2Plant for fall: Jul 29 to Aug 12
Start indoors: Apr 14 to Apr 21Sow outdoors: May 19 to Jun 2
Start indoors: Apr 14 to Apr 21Transplant outside: May 26 to Jun 9
Sow outdoors: Apr 21 to May 19Plant for fall: Jul 15 to Jul 29
Sow outdoors: Apr 21 to May 19Plant for fall: Jul 29 to Aug 12
Sow outdoors: Apr 21 to May 12
Sow outdoors: Apr 28 to May 26Plant for fall: Jul 29 to Aug 12
Sow outdoors: Apr 28 to May 19Plant for fall: Aug 12 to Sep 2
Sow outdoors: May 19 to Jun 9Plant for fall: Jul 22 to Aug 5
Sow outdoors: May 19 to Jun 2
Transplant outside: May 26 to Jun 16
Plant for fall: Sep 23 to Oct 28
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Dufur, OR
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 17 – Mar 3 | Apr 14 – Apr 28 | — | — |
| Peppers | Mar 3 – Mar 17 | May 26 – Jun 9 | — | — |
| Eggplant | Mar 3 – Mar 17 | May 26 – Jun 9 | — | — |
| Tomatoes | Mar 17 – Mar 31 | May 19 – Jun 2 | — | — |
| Lettuce | Mar 17 – Mar 31 | Apr 21 – May 5 | Apr 14 – May 19 | Aug 12 – Sep 9 |
| Kale | Mar 17 – Mar 31 | Apr 14 – Apr 28 | Apr 14 – Apr 28 | Jul 29 – Aug 19 |
| Broccoli | Mar 17 – Mar 31 | Apr 28 – May 12 | — | Jul 1 – Jul 22 |
| Cabbage | Mar 17 – Mar 31 | Apr 21 – May 5 | — | Jul 1 – Jul 22 |
| Cauliflower | Mar 17 – Mar 31 | Apr 28 – May 12 | — | Jul 1 – Jul 22 |
| Okra | Mar 31 – Apr 14 | Jun 2 – Jun 16 | Jun 2 – Jun 16 | — |
| Basil | Mar 31 – Apr 14 | May 19 – Jun 2 | — | — |
| Peas | — | — | Mar 31 – Apr 21 | Jul 15 – Aug 5 |
| Spinach | — | — | Mar 31 – Apr 21 | Aug 12 – Sep 2 |
| Radishes | — | — | Apr 7 – May 19 | Aug 26 – Sep 16 |
| Cucumbers | Apr 14 – Apr 21 | May 26 – Jun 2 | May 19 – Jun 2 | Jul 22 – Aug 5 |
| Zucchini & Summer Squash | Apr 14 – Apr 21 | — | May 19 – Jun 2 | Jul 29 – Aug 12 |
| Winter Squash & Pumpkins | Apr 14 – Apr 21 | — | May 19 – Jun 2 | — |
| Melons & Watermelon | Apr 14 – Apr 21 | May 26 – Jun 9 | — | — |
| Carrots | — | — | Apr 21 – May 19 | Jul 15 – Jul 29 |
| Beets | — | — | Apr 21 – May 19 | Jul 29 – Aug 12 |
| Potatoes | — | — | Apr 21 – May 12 | — |
| Swiss Chard | — | — | Apr 28 – May 26 | Jul 29 – Aug 12 |
| Cilantro | — | — | Apr 28 – May 19 | Aug 12 – Sep 2 |
| Green Beans | — | — | May 19 – Jun 9 | Jul 22 – Aug 5 |
| Sweet Corn | — | — | May 19 – Jun 2 | — |
| Sweet Potatoes | — | May 26 – Jun 16 | — | — |
| Garlic | — | — | — | Sep 23 – Oct 28 |
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 Dufur, OR weather station, 7 km away (elevation 1,329 ft (405 m)).
Frost dates near Dufur
- Tygh Valley May 12 · Oct 7
- The Dalles Apr 14 · Oct 23
- Grass Valley May 15 · Oct 11
- Mosier Apr 20 · Oct 13
- Maupin May 5 · Oct 7
- Moro May 12 · Oct 4
- Mount Hood Parkdale May 13 · Oct 3
- Wasco May 12 · Oct 4
- Odell Apr 20 · Oct 13
- Hood River Apr 20 · Oct 13
Frequently asked questions
When is the last frost in Dufur, OR?
The median last spring frost in Dufur, OR is May 12. There is still about a 10% chance of frost after May 31, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Dufur, OR?
The median first fall frost is October 7, with about a 10% chance of frost before September 22.
How long is the growing season in Dufur, OR?
About 148 days between the median last spring frost and first fall frost.
What planting zone is Dufur, OR?
Dufur, OR is in USDA hardiness zone 7b.