Frost dates for Scappoose, 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
April 10
typical year
Safe to plant
May 1
frost is over in 9 of 10 years
First fall frost
November 2
typical year
Growing season
209 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 | – | Mar 13 – 27 | – |
| Spinach | – | Feb 27 – Mar 20 | Sep 7 – 21 |
| Lettuce | – | Mar 13 – Apr 3 | Sep 7 – 21 |
| Radishes | – | Mar 13 – Apr 24 | Sep 21 – Oct 5 |
| Onions | – | Mar 13 – 27 | – |
| Potatoes | – | Mar 20 – Apr 3 | – |
| Carrots | – | Mar 20 – Apr 10 | Aug 10 – 24 |
| Beets | – | Mar 13 – 27 | Aug 24 – Sep 7 |
| Kale | Jan 30 – Feb 13 | Mar 13 – 27 | Aug 24 – Sep 7 |
| Broccoli | Jan 30 – Feb 13 | Mar 27 – Apr 10 | Aug 24 – Sep 7 |
| Cabbage | Jan 16 – 30 | Mar 13 – 27 | Aug 24 – Sep 7 |
| Garlic | – | – | Sep 21 – Oct 12 |
| Warm-season crops | |||
| Tomatoes | Mar 6 – 20 | May 1 – 15 | – |
| Peppers | Feb 27 – Mar 13 | May 8 – 22 | – |
| Cucumbers | – | May 1 – 22 | – |
| Zucchini | – | May 1 – 29 | – |
| Pumpkins | – | May 1 – 22 | – |
| Green beans | – | May 1 – Aug 24 | – |
| Sweet corn | – | May 1 – 29 | – |
| Basil | Mar 27 – Apr 10 | May 8 – 15 | – |
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 | May 1 | April 10 | March 17 |
| Fall frost before | October 16 | November 2 | November 23 |
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 March 3 (March 28 in a late year), and the first one in fall around November 19.
Towns that use these dates
This is the nearest NOAA station with frost records for 1 town.
Scappoose
Where these dates come from
NOAA weather station SCAPPOOSE IND AP, OR US (USW00004201), 1991–2020 climate normals. It's the nearest station for 4 zip codes, all within 9 miles:
97056, 97133, 97231, 98642
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.