Otis, OR frost dates
Last spring frostApr 4median date
First fall frostNov 16median date
Growing season226 daysfrost-free
Hardiness zone9aZone 9a
How Otis compares
- In 8 years out of 10, the last spring frost in Otis falls between March 2 and May 3, a 62-day window. The first fall frost falls between October 26 and December 12.
- The median last frost is 12 days earlier than the Oregon median of Apr 16.
- Its 226-day growing season is longer than 75% of the 345 Oregon places with a regular frost season (state median 193 days).
- The last frost is 32 days later than the zone 9a median of Mar 3. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 9a chart.
- The weather station records an average of 32 nights a year at or below 32°F.
- Compared with Corvallis, OR, 72 km away, the last frost here is 13 days earlier than there and the growing season is 32 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 2 |
| 50% (median) | April 4 |
| 10% (safe for tender plants) | May 3 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 26 |
| 50% (median) | November 16 |
| 90% (late) | December 12 |
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 Otis, OR
Otis, OR frost dates — last frost Apr 4, first frost Nov 16, zone 9a. whenisthelastfrost.com
Crop
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Start indoors: Jan 10 to Jan 24Transplant outside: Mar 7 to Mar 21
Start indoors: Jan 24 to Feb 7Transplant outside: Apr 18 to May 2
Start indoors: Jan 24 to Feb 7Transplant outside: Apr 18 to May 2
Start indoors: Feb 7 to Feb 21Transplant outside: Apr 11 to Apr 25
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 14 to Mar 28Sow outdoors: Mar 7 to Apr 11Plant for fall: Sep 21 to Oct 19
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 7 to Mar 21Sow outdoors: Mar 7 to Mar 21Plant for fall: Sep 7 to Sep 28
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 21 to Apr 4Plant for fall: Aug 10 to Aug 31
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 14 to Mar 28Plant for fall: Aug 10 to Aug 31
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 21 to Apr 4Plant for fall: Aug 10 to Aug 31
Start indoors: Feb 21 to Mar 7Transplant outside: Apr 25 to May 9Sow outdoors: Apr 25 to May 9
Start indoors: Feb 21 to Mar 7Transplant outside: Apr 11 to Apr 25
Sow outdoors: Feb 21 to Mar 14Plant for fall: Aug 24 to Sep 14
Sow outdoors: Feb 21 to Mar 14Plant for fall: Sep 21 to Oct 12
Sow outdoors: Feb 28 to Apr 11Plant for fall: Oct 5 to Oct 26
Start indoors: Mar 7 to Mar 14Transplant outside: Apr 18 to Apr 25Sow outdoors: Apr 11 to Apr 25Plant for fall: Aug 31 to Sep 14
Start indoors: Mar 7 to Mar 14Sow outdoors: Apr 11 to Apr 25Plant for fall: Sep 7 to Sep 21
Start indoors: Mar 7 to Mar 14Sow outdoors: Apr 11 to Apr 25
Start indoors: Mar 7 to Mar 14Transplant outside: Apr 18 to May 2
Sow outdoors: Mar 14 to Apr 11Plant for fall: Aug 24 to Sep 7
Sow outdoors: Mar 14 to Apr 11Plant for fall: Sep 7 to Sep 21
Sow outdoors: Mar 14 to Apr 4
Sow outdoors: Mar 21 to Apr 18Plant for fall: Sep 7 to Sep 21
Sow outdoors: Mar 21 to Apr 11Plant for fall: Sep 21 to Oct 12
Sow outdoors: Apr 11 to May 2Plant for fall: Aug 31 to Sep 14
Sow outdoors: Apr 11 to Apr 25
Transplant outside: Apr 18 to May 9
Plant for fall: Nov 2 to Dec 7
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Otis, OR
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 10 – Jan 24 | Mar 7 – Mar 21 | — | — |
| Peppers | Jan 24 – Feb 7 | Apr 18 – May 2 | — | — |
| Eggplant | Jan 24 – Feb 7 | Apr 18 – May 2 | — | — |
| Tomatoes | Feb 7 – Feb 21 | Apr 11 – Apr 25 | — | — |
| Lettuce | Feb 7 – Feb 21 | Mar 14 – Mar 28 | Mar 7 – Apr 11 | Sep 21 – Oct 19 |
| Kale | Feb 7 – Feb 21 | Mar 7 – Mar 21 | Mar 7 – Mar 21 | Sep 7 – Sep 28 |
| Broccoli | Feb 7 – Feb 21 | Mar 21 – Apr 4 | — | Aug 10 – Aug 31 |
| Cabbage | Feb 7 – Feb 21 | Mar 14 – Mar 28 | — | Aug 10 – Aug 31 |
| Cauliflower | Feb 7 – Feb 21 | Mar 21 – Apr 4 | — | Aug 10 – Aug 31 |
| Okra | Feb 21 – Mar 7 | Apr 25 – May 9 | Apr 25 – May 9 | — |
| Basil | Feb 21 – Mar 7 | Apr 11 – Apr 25 | — | — |
| Peas | — | — | Feb 21 – Mar 14 | Aug 24 – Sep 14 |
| Spinach | — | — | Feb 21 – Mar 14 | Sep 21 – Oct 12 |
| Radishes | — | — | Feb 28 – Apr 11 | Oct 5 – Oct 26 |
| Cucumbers | Mar 7 – Mar 14 | Apr 18 – Apr 25 | Apr 11 – Apr 25 | Aug 31 – Sep 14 |
| Zucchini & Summer Squash | Mar 7 – Mar 14 | — | Apr 11 – Apr 25 | Sep 7 – Sep 21 |
| Winter Squash & Pumpkins | Mar 7 – Mar 14 | — | Apr 11 – Apr 25 | — |
| Melons & Watermelon | Mar 7 – Mar 14 | Apr 18 – May 2 | — | — |
| Carrots | — | — | Mar 14 – Apr 11 | Aug 24 – Sep 7 |
| Beets | — | — | Mar 14 – Apr 11 | Sep 7 – Sep 21 |
| Potatoes | — | — | Mar 14 – Apr 4 | — |
| Swiss Chard | — | — | Mar 21 – Apr 18 | Sep 7 – Sep 21 |
| Cilantro | — | — | Mar 21 – Apr 11 | Sep 21 – Oct 12 |
| Green Beans | — | — | Apr 11 – May 2 | Aug 31 – Sep 14 |
| Sweet Corn | — | — | Apr 11 – Apr 25 | — |
| Sweet Potatoes | — | Apr 18 – May 9 | — | — |
| Garlic | — | — | — | Nov 2 – Dec 7 |
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 Otis 2 Ne, OR weather station, 2 km away (elevation 151 ft (46 m)).
Frost dates near Otis
- Neotsu Apr 4 · Nov 16
- Neskowin Apr 4 · Nov 16
- Lincoln City Apr 4 · Nov 16
- Gleneden Beach Apr 4 · Nov 16
- Hebo Mar 17 · Nov 22
- Pacific City Mar 17 · Nov 22
- Depoe Bay Mar 12 · Dec 10
- Grand Ronde May 20 · Oct 23
- Otter Rock Mar 12 · Dec 10
- Beaver Mar 17 · Nov 22
Frequently asked questions
When is the last frost in Otis, OR?
The median last spring frost in Otis, OR is April 4. There is still about a 10% chance of frost after May 3, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Otis, OR?
The median first fall frost is November 16, with about a 10% chance of frost before October 26.
How long is the growing season in Otis, OR?
About 226 days between the median last spring frost and first fall frost.
What planting zone is Otis, OR?
Otis, OR is in USDA hardiness zone 9a.