Frost dates for Olga, WA
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
February 26
typical year
Safe to plant
March 23
frost is over in 9 of 10 years
First fall frost
November 29
typical year
Growing season
276 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 | – | Jan 29 – Feb 12 | – |
| Spinach | – | Jan 15 – Feb 5 | Oct 4 – 18 |
| Lettuce | – | Jan 29 – Feb 19 | Oct 4 – 18 |
| Radishes | – | Jan 29 – Mar 12 | Oct 18 – Nov 1 |
| Onions | – | Jan 29 – Feb 12 | – |
| Potatoes | – | Feb 5 – 19 | – |
| Carrots | – | Feb 5 – 26 | Sep 6 – 20 |
| Beets | – | Jan 29 – Feb 12 | Sep 20 – Oct 4 |
| Kale | Dec 18 – Jan 1 | Jan 29 – Feb 12 | Sep 20 – Oct 4 |
| Broccoli | Dec 18 – Jan 1 | Feb 12 – 26 | Sep 20 – Oct 4 |
| Cabbage | Dec 4 – 18 | Jan 29 – Feb 12 | Sep 20 – Oct 4 |
| Garlic | – | – | Oct 18 – Nov 8 |
| Warm-season crops | |||
| Tomatoes | Jan 26 – Feb 9 | Mar 23 – Apr 6 | – |
| Peppers | Jan 19 – Feb 2 | Mar 30 – Apr 13 | – |
| Cucumbers | – | Mar 23 – Apr 13 | – |
| Zucchini | – | Mar 23 – Apr 20 | – |
| Pumpkins | – | Mar 23 – Apr 13 | – |
| Green beans | – | Mar 23 – Sep 20 | – |
| Sweet corn | – | Mar 23 – Apr 20 | – |
| Basil | Feb 16 – Mar 2 | Mar 30 – Apr 6 | – |
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 | March 23 | February 26 | January 23 |
| Fall frost before | November 10 | November 29 | December 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 January 26 (February 26 in a late year), and the first one in fall around December 14.
Where these dates come from
NOAA weather station OLGA 2 SE, WA US (USC00456096), 1991–2020 climate normals. It's the nearest station for 5 zip codes, all within 12 miles:
98222, 98245, 98279, 98280, 98297
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.