Frost dates for Chula Vista, 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
January 6
typical year
Safe to plant
February 5
frost is over in 9 of 10 years
First fall frost
December 31
typical year
Growing season
365 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 | – | Dec 9 – 23 | – |
| Spinach | – | Nov 25 – Dec 16 | Nov 5 – 19 |
| Lettuce | – | Dec 9 – 30 | Nov 5 – 19 |
| Radishes | – | Dec 9 – Jan 20 | Nov 19 – Dec 3 |
| Onions | – | Dec 9 – 23 | – |
| Potatoes | – | Dec 16 – 30 | – |
| Carrots | – | Dec 16 – Jan 6 | Oct 8 – 22 |
| Beets | – | Dec 9 – 23 | Oct 22 – Nov 5 |
| Kale | Oct 28 – Nov 11 | Dec 9 – 23 | Oct 22 – Nov 5 |
| Broccoli | Oct 28 – Nov 11 | Dec 23 – Jan 6 | Oct 22 – Nov 5 |
| Cabbage | Oct 14 – 28 | Dec 9 – 23 | Oct 22 – Nov 5 |
| Garlic | – | – | Nov 19 – Dec 10 |
| Warm-season crops | |||
| Tomatoes | Dec 11 – 25 | Feb 5 – 19 | – |
| Peppers | Dec 4 – 18 | Feb 12 – 26 | – |
| Cucumbers | – | Feb 5 – 26 | – |
| Zucchini | – | Feb 5 – Mar 5 | – |
| Pumpkins | – | Feb 5 – 26 | – |
| Green beans | – | Feb 5 – Oct 22 | – |
| Sweet corn | – | Feb 5 – Mar 5 | – |
| Basil | Jan 1 – 15 | Feb 12 – 19 | – |
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 | February 5 | January 6 | December 13 |
| Fall frost before | December 11 | December 31 | January 30 |
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 n/a (n/a in a late year), and the first one in fall around n/a.
Towns that use these dates
This is the nearest NOAA station with frost records for 4 towns.
Chula Vista, National City, Imperial Beach, Coronado
Where these dates come from
NOAA weather station SAN DIEGO BROWN FLD, CA US (USW00003178), 1991–2020 climate normals. It's the nearest station for 21 zip codes, all within 18 miles:
91902, 91910, 91911, 91913, 91914, 91915, 91932, 91950, 92101, 92106, 92113, 92118, 92132, 92135, 92136, 92139, 92147, 92154, 92155, 92173, 92179
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.