Dairy, OR frost dates
Last spring frostJun 9median date
First fall frostSep 18median date
Growing season101 daysfrost-free
Hardiness zone6bZone 6b
How Dairy compares
- In 8 years out of 10, the last spring frost in Dairy falls between May 22 and June 26, a 35-day window. The first fall frost falls between September 4 and October 1.
- The median last frost is 54 days later than the Oregon median of Apr 16.
- Its 101-day growing season is longer than 5% of the 345 Oregon places with a regular frost season (state median 193 days).
- The last frost is 48 days later than the zone 6b median of Apr 22. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6b chart.
- The weather station records an average of 184 nights a year at or below 32°F.
- Compared with Medford, OR, 112 km away, the last frost here is 62 days later than there and the growing season is 103 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 22 |
| 50% (median) | June 9 |
| 10% (safe for tender plants) | June 26 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 4 |
| 50% (median) | September 18 |
| 90% (late) | October 1 |
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 Dairy, OR
Dairy, OR frost dates — last frost Jun 9, first frost Sep 18, zone 6b. whenisthelastfrost.com
Crop
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Start indoors: Mar 17 to Mar 31Transplant outside: May 12 to May 26
Start indoors: Mar 31 to Apr 14Transplant outside: Jun 23 to Jul 7
Start indoors: Mar 31 to Apr 14Transplant outside: Jun 23 to Jul 7
Start indoors: Apr 14 to Apr 28Transplant outside: Jun 16 to Jun 30
Start indoors: Apr 14 to Apr 28Transplant outside: May 19 to Jun 2Sow outdoors: May 12 to Jun 16Plant for fall: Jul 24 to Aug 21
Start indoors: Apr 14 to Apr 28Transplant outside: May 12 to May 26Sow outdoors: May 12 to May 26Plant for fall: Jul 10 to Jul 31
Start indoors: Apr 14 to Apr 28Transplant outside: May 26 to Jun 9
Start indoors: Apr 14 to Apr 28Transplant outside: May 19 to Jun 2
Start indoors: Apr 14 to Apr 28Transplant outside: May 26 to Jun 9
Start indoors: Apr 28 to May 12Transplant outside: Jun 30 to Jul 14Sow outdoors: Jun 30 to Jul 14
Start indoors: Apr 28 to May 12Transplant outside: Jun 16 to Jun 30
Sow outdoors: Apr 28 to May 19Plant for fall: Jun 26 to Jul 17
Sow outdoors: Apr 28 to May 19Plant for fall: Jul 24 to Aug 14
Sow outdoors: May 5 to Jun 16Plant for fall: Aug 7 to Aug 28
Start indoors: May 12 to May 19Transplant outside: Jun 23 to Jun 30Sow outdoors: Jun 16 to Jun 30
Start indoors: May 12 to May 19Sow outdoors: Jun 16 to Jun 30
Start indoors: May 12 to May 19Sow outdoors: Jun 16 to Jun 30
Start indoors: May 12 to May 19Transplant outside: Jun 23 to Jul 7
Sow outdoors: May 19 to Jun 16
Sow outdoors: May 19 to Jun 16Plant for fall: Jul 10 to Jul 24
Sow outdoors: May 19 to Jun 9
Sow outdoors: May 26 to Jun 23Plant for fall: Jul 10 to Jul 24
Sow outdoors: May 26 to Jun 16Plant for fall: Jul 24 to Aug 14
Sow outdoors: Jun 16 to Jul 7
Sow outdoors: Jun 16 to Jun 30
Transplant outside: Jun 23 to Jul 14
Plant for fall: Sep 4 to Oct 9
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Dairy, OR
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 17 – Mar 31 | May 12 – May 26 | — | — |
| Peppers | Mar 31 – Apr 14 | Jun 23 – Jul 7 | — | — |
| Eggplant | Mar 31 – Apr 14 | Jun 23 – Jul 7 | — | — |
| Tomatoes | Apr 14 – Apr 28 | Jun 16 – Jun 30 | — | — |
| Lettuce | Apr 14 – Apr 28 | May 19 – Jun 2 | May 12 – Jun 16 | Jul 24 – Aug 21 |
| Kale | Apr 14 – Apr 28 | May 12 – May 26 | May 12 – May 26 | Jul 10 – Jul 31 |
| Broccoli | Apr 14 – Apr 28 | May 26 – Jun 9 | — | — |
| Cabbage | Apr 14 – Apr 28 | May 19 – Jun 2 | — | — |
| Cauliflower | Apr 14 – Apr 28 | May 26 – Jun 9 | — | — |
| Okra | Apr 28 – May 12 | Jun 30 – Jul 14 | Jun 30 – Jul 14 | — |
| Basil | Apr 28 – May 12 | Jun 16 – Jun 30 | — | — |
| Peas | — | — | Apr 28 – May 19 | Jun 26 – Jul 17 |
| Spinach | — | — | Apr 28 – May 19 | Jul 24 – Aug 14 |
| Radishes | — | — | May 5 – Jun 16 | Aug 7 – Aug 28 |
| Cucumbers | May 12 – May 19 | Jun 23 – Jun 30 | Jun 16 – Jun 30 | — |
| Zucchini & Summer Squash | May 12 – May 19 | — | Jun 16 – Jun 30 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 101 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 12 – May 19 | — | Jun 16 – Jun 30 | — |
| Melons & Watermelon | May 12 – May 19 | Jun 23 – Jul 7 | — | — |
| Carrots | — | — | May 19 – Jun 16 | — |
| Beets | — | — | May 19 – Jun 16 | Jul 10 – Jul 24 |
| Potatoes | — | — | May 19 – Jun 9 | — |
| Swiss Chard | — | — | May 26 – Jun 23 | Jul 10 – Jul 24 |
| Cilantro | — | — | May 26 – Jun 16 | Jul 24 – Aug 14 |
| Green Beans | — | — | Jun 16 – Jul 7 | — |
| Sweet Corn | — | — | Jun 16 – Jun 30 | — |
| Sweet Potatoes Warning: Your frost-free season is about 101 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 23 – Jul 14 | — | — |
| Garlic | — | — | — | Sep 4 – Oct 9 |
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 Klamath Falls Intl Ap, OR weather station, 19 km away (elevation 4,085 ft (1,245 m)).
Frost dates near Dairy
- Bonanza May 31 · Sep 21
- Klamath Falls Jun 9 · Sep 18
- Merrill Jun 6 · Sep 14
- Sprague River May 31 · Sep 21
- Malin Jun 6 · Sep 14
- Midland Jun 5 · Sep 20
- Beatty May 31 · Sep 21
- Keno Jun 5 · Sep 20
- Chiloquin frost any month
- Bly May 31 · Sep 21
Frequently asked questions
When is the last frost in Dairy, OR?
The median last spring frost in Dairy, OR is June 9. There is still about a 10% chance of frost after June 26, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Dairy, OR?
The median first fall frost is September 18, with about a 10% chance of frost before September 4.
How long is the growing season in Dairy, OR?
About 101 days between the median last spring frost and first fall frost.
What planting zone is Dairy, OR?
Dairy, OR is in USDA hardiness zone 6b.