Frost dates for Ramona Fire Dept, 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
March 4
typical year
Safe to plant
April 10
frost is over in 9 of 10 years
First fall frost
December 4
typical year
Growing season
270 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 4 – 18 | – |
| Spinach | – | Jan 21 – Feb 11 | Oct 9 – 23 |
| Lettuce | – | Feb 4 – 25 | Oct 9 – 23 |
| Radishes | – | Feb 4 – Mar 18 | Oct 23 – Nov 6 |
| Onions | – | Feb 4 – 18 | – |
| Potatoes | – | Feb 11 – 25 | – |
| Carrots | – | Feb 11 – Mar 4 | Sep 11 – 25 |
| Beets | – | Feb 4 – 18 | Sep 25 – Oct 9 |
| Kale | Dec 24 – Jan 7 | Feb 4 – 18 | Sep 25 – Oct 9 |
| Broccoli | Dec 24 – Jan 7 | Feb 18 – Mar 4 | Sep 25 – Oct 9 |
| Cabbage | Dec 10 – 24 | Feb 4 – 18 | Sep 25 – Oct 9 |
| Garlic | – | – | Oct 23 – Nov 13 |
| Warm-season crops | |||
| Tomatoes | Feb 13 – 27 | Apr 10 – 24 | – |
| Peppers | Feb 6 – 20 | Apr 17 – May 1 | – |
| Cucumbers | – | Apr 10 – May 1 | – |
| Zucchini | – | Apr 10 – May 8 | – |
| Pumpkins | – | Apr 10 – May 1 | – |
| Green beans | – | Apr 10 – Sep 25 | – |
| Sweet corn | – | Apr 10 – May 8 | – |
| Basil | Mar 6 – 20 | Apr 17 – 24 | – |
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 10 | March 4 | January 29 |
| Fall frost before | November 17 | December 4 | December 18 |
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 31 (March 1 in a late year), and the first one in fall around December 19.
Where these dates come from
NOAA weather station RAMONA FIRE DEPT, CA US (USC00047228), 1991–2020 climate normals. It's the nearest station for 1 zip code, all within 5 miles:
92065
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.