Frost dates for Cascade Locks, 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
March 24
typical year
Safe to plant
April 16
frost is over in 9 of 10 years
First fall frost
November 20
typical year
Growing season
242 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 | – | Feb 24 – Mar 10 | – |
| Spinach | – | Feb 10 – Mar 3 | Sep 25 – Oct 9 |
| Lettuce | – | Feb 24 – Mar 17 | Sep 25 – Oct 9 |
| Radishes | – | Feb 24 – Apr 7 | Oct 9 – 23 |
| Onions | – | Feb 24 – Mar 10 | – |
| Potatoes | – | Mar 3 – 17 | – |
| Carrots | – | Mar 3 – 24 | Aug 28 – Sep 11 |
| Beets | – | Feb 24 – Mar 10 | Sep 11 – 25 |
| Kale | Jan 13 – 27 | Feb 24 – Mar 10 | Sep 11 – 25 |
| Broccoli | Jan 13 – 27 | Mar 10 – 24 | Sep 11 – 25 |
| Cabbage | Dec 30 – Jan 13 | Feb 24 – Mar 10 | Sep 11 – 25 |
| Garlic | – | – | Oct 9 – 30 |
| Warm-season crops | |||
| Tomatoes | Feb 19 – Mar 5 | Apr 16 – 30 | – |
| Peppers | Feb 12 – 26 | Apr 23 – May 7 | – |
| Cucumbers | – | Apr 16 – May 7 | – |
| Zucchini | – | Apr 16 – May 14 | – |
| Pumpkins | – | Apr 16 – May 7 | – |
| Green beans | – | Apr 16 – Sep 11 | – |
| Sweet corn | – | Apr 16 – May 14 | – |
| Basil | Mar 12 – 26 | Apr 23 – 30 | – |
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 | April 16 | March 24 | February 28 |
| Fall frost before | November 1 | November 20 | December 12 |
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 February 24 (March 21 in a late year), and the first one in fall around December 9.
Towns that use these dates
This is the nearest NOAA station with frost records for 2 towns.
Stevenson, WA, Cascade Locks
Where these dates come from
NOAA weather station CASCADE LOCKS, OR US (USC00351407), 1991–2020 climate normals. It's the nearest station for 2 zip codes, all within 5 miles:
97014, 98648
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.