Frost dates for Eureka, CA
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 22
typical year
Safe to plant
March 23
frost is over in 9 of 10 years
First fall frost
December 7
typical year
Growing season
293 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 25 – Feb 8 | – |
| Spinach | – | Jan 11 – Feb 1 | Oct 12 – 26 |
| Lettuce | – | Jan 25 – Feb 15 | Oct 12 – 26 |
| Radishes | – | Jan 25 – Mar 8 | Oct 26 – Nov 9 |
| Onions | – | Jan 25 – Feb 8 | – |
| Potatoes | – | Feb 1 – 15 | – |
| Carrots | – | Feb 1 – 22 | Sep 14 – 28 |
| Beets | – | Jan 25 – Feb 8 | Sep 28 – Oct 12 |
| Kale | Dec 14 – 28 | Jan 25 – Feb 8 | Sep 28 – Oct 12 |
| Broccoli | Dec 14 – 28 | Feb 8 – 22 | Sep 28 – Oct 12 |
| Cabbage | Nov 30 – Dec 14 | Jan 25 – Feb 8 | Sep 28 – Oct 12 |
| Garlic | – | – | Oct 26 – Nov 16 |
| 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 28 | – |
| 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 22 | December 31 |
| Fall frost before | November 15 | December 7 | January 11 |
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 3 (February 8 in a late year), and the first one in fall around December 25.
Towns that use these dates
This is the nearest NOAA station with frost records for 2 towns.
Eureka, Arcata
Where these dates come from
NOAA weather station EUREKA WFO WOODLEY ISLAND, CA US (USW00024213), 1991–2020 climate normals. It's the nearest station for 8 zip codes, all within 17 miles:
95501, 95503, 95521, 95524, 95537, 95550, 95551, 95564
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.