Frost dates for Fields, OR
When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.
Last spring frost
May 10
typical year
Safe to plant
June 3
frost is over in 9 of 10 years
First fall frost
October 7
typical year
Growing season
145 days
frost-free, typical year
Frost watch this week
Tonight's and the next six nights' lows from the National Weather Service forecast for the station's location. Frost: 32°F or colder. Possible frost: 33–36°F, mostly in low spots on clear, still nights.
When to plant
Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.
| Crop | Start indoors | Plant outside | Fall planting |
|---|---|---|---|
| Cool-season crops | |||
| Peas | – | Apr 12 – 26 | – |
| Spinach | – | Mar 29 – Apr 19 | Aug 12 – 26 |
| Lettuce | – | Apr 12 – May 3 | Aug 12 – 26 |
| Radishes | – | Apr 12 – May 24 | Aug 26 – Sep 9 |
| Onions | – | Apr 12 – 26 | – |
| Potatoes | – | Apr 19 – May 3 | – |
| Carrots | – | Apr 19 – May 10 | Jul 15 – 29 |
| Beets | – | Apr 12 – 26 | Jul 29 – Aug 12 |
| Kale | Mar 1 – 15 | Apr 12 – 26 | Jul 29 – Aug 12 |
| Broccoli | Mar 1 – 15 | Apr 26 – May 10 | Jul 29 – Aug 12 |
| Cabbage | Feb 15 – Mar 1 | Apr 12 – 26 | Jul 29 – Aug 12 |
| Garlic | – | – | Aug 26 – Sep 16 |
| Warm-season crops | |||
| Tomatoes | Apr 8 – 22 | Jun 3 – 17 | – |
| Peppers | Apr 1 – 15 | Jun 10 – 24 | – |
| Cucumbers | – | Jun 3 – 24 | – |
| Zucchini | – | Jun 3 – Jul 1 | – |
| Pumpkins | – | Jun 3 – 24 | – |
| Green beans | – | Jun 3 – Jul 29 | – |
| Sweet corn | – | Jun 3 – Jul 1 | – |
| Basil | Apr 29 – May 13 | Jun 10 – 17 | – |
Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.
The year at a glance
Start indoors Plant outside Fall planting
The chance of frost, by date
| 1 year in 10 | Half of years | 9 years in 10 | |
|---|---|---|---|
| Spring frost after | June 3 | May 10 | April 25 |
| Fall frost before | September 21 | October 7 | October 21 |
Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.
Hard freeze (28°F)
A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around April 27 (May 15 in a late year), and the first one in fall around October 19.
Where these dates come from
NOAA weather station FIELDS, OR US (USC00352876), 1991–2020 climate normals. It's the nearest station for 3 zip codes, all within 31 miles:
97710, 97721, 97736
1 of these zip codes are more than 30 miles from the station, so their real frost dates may differ by a week or more.
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.