Last frost date in Beaverton, Oregon
April 1
Average last frost in spring. In an early year (1 in 10) it's over by March 5; in a late year (1 in 10) it comes after April 26.
November 6
Average first frost in fall. 1 year in 10 it comes by October 19.
Source: NOAA U.S. Climate Normals 1991–2020, station Beaverton 2 Ssw (USC00350595), 1.6 miles from Beaverton, elevation 270 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Tigard and Tualatin, so their frost dates are the same as Beaverton's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Mar 5 | Apr 1 | Apr 26 |
| First frost in fall | Oct 19 | Nov 6 | Dec 1 |
Frost-free days in an average year: 222
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 28 | Oct 21 |
| Frost (32°F) | Every year | Apr 1 | Nov 6 |
| Hard freeze (28°F) | Every year | Feb 26 | Nov 30 |
Nights at 32°F or colder in an average year: 42
What to plant now in Beaverton
- Mustard greensAug 15 – Nov 1Now
- Garden peasSept 1 – Nov 1Now
- ParsleySept 1 – Nov 15Now
- RadishesSept 1 – Nov 15Now
- SpinachSept 15 – Nov 1Now
- Corn saladOct 1 – Dec 1Now
- Onion setsOct 1 – Dec 1Now
- Upland cressOct 1 – Dec 1Now
- Asparagus plantsDec 1 – Jan 1Soon
- Spring planting calendar for an average last frost around March 30 Beaverton: April 1
- Fall planting calendar for an average first frost around November 10 Beaverton: November 6
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in Oregon
- Hillsboro 7 mi · last frost Apr 16
- Lake Oswego 7 mi · last frost Mar 18
- Portland 9 mi · last frost Feb 25
- Wilsonville 12 mi · last frost Mar 18
- Newberg 14 mi · last frost Mar 21
Updated