Frost dates for Campo, 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
April 30
typical year
Safe to plant
June 1
frost is over in 9 of 10 years
First fall frost
October 26
typical year
Growing season
174 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 2 – 16 | – |
| Spinach | – | Mar 19 – Apr 9 | Aug 31 – Sep 14 |
| Lettuce | – | Apr 2 – 23 | Aug 31 – Sep 14 |
| Radishes | – | Apr 2 – May 14 | Sep 14 – 28 |
| Onions | – | Apr 2 – 16 | – |
| Potatoes | – | Apr 9 – 23 | – |
| Carrots | – | Apr 9 – 30 | Aug 3 – 17 |
| Beets | – | Apr 2 – 16 | Aug 17 – 31 |
| Kale | Feb 19 – Mar 5 | Apr 2 – 16 | Aug 17 – 31 |
| Broccoli | Feb 19 – Mar 5 | Apr 16 – 30 | Aug 17 – 31 |
| Cabbage | Feb 5 – 19 | Apr 2 – 16 | Aug 17 – 31 |
| Garlic | – | – | Sep 14 – Oct 5 |
| Warm-season crops | |||
| Tomatoes | Apr 6 – 20 | Jun 1 – 15 | – |
| Peppers | Mar 30 – Apr 13 | Jun 8 – 22 | – |
| Cucumbers | – | Jun 1 – 22 | – |
| Zucchini | – | Jun 1 – 29 | – |
| Pumpkins | – | Jun 1 – 22 | – |
| Green beans | – | Jun 1 – Aug 17 | – |
| Sweet corn | – | Jun 1 – 29 | – |
| Basil | Apr 27 – May 11 | Jun 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 | June 1 | April 30 | April 9 |
| Fall frost before | September 30 | October 26 | November 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 April 2 (April 28 in a late year), and the first one in fall around November 14.
Where these dates come from
NOAA weather station CAMPO, CA US (USC00041424), 1991–2020 climate normals. It's the nearest station for 3 zip codes, all within 10 miles:
91906, 91963, 91980
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.