Last frost date in Temescal Valley, CA
The average last frost in Temescal Valley is January 28. By February 27 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about December 18, which leaves 329 frost-free days. An early freeze before December 1 happens one year in ten.
- Safe after (10% risk)
- Feb 27
- Average first frost
- Dec 18
- Frost-free season
- 329 days
- Hard freeze (28°F) ends
- Jan 1
No frost in the next 6 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2253°
- FriOct 2354°
- SatOct 2457°
- SunOct 2559°
- MonOct 2659°
- TueOct 2759°
Planting calendar for Temescal Valley
Windows count forward or back from the average frost dates above. Click a crop for dates across California.
TomatoesFeb 15–Mar 1
PumpkinsFeb 15–Mar 1
SunflowersFeb 15–Mar 8
CucumbersFeb 22–Mar 1
CornFeb 15–Mar 1
Sweet potatoesFeb 18–Mar 4
WatermelonFeb 15–Mar 1
Green beansFeb 15–Mar 8
ZucchiniFeb 15–Mar 1
OkraFeb 18–Mar 4
PeppersFeb 15–Mar 1
BasilFeb 15–Mar 1
Butternut squashFeb 15–Mar 1
CantaloupeFeb 15–Mar 1
EggplantFeb 15–Mar 1
PotatoesDec 31–Jan 14
OnionsDec 17–Jan 7
CarrotsJan 7–Feb 11
LettuceJan 14–Feb 4
BroccoliDec 31–Jan 14
BeetsDec 31–Feb 11
PeasDec 17–Dec 31
CabbageDec 31–Jan 14
RadishesDec 24–Feb 4
Brussels sproutsJan 14–Jan 28
SpinachDec 17–Jan 7
CilantroJan 14–Feb 4
KaleDec 31–Jan 14
Collard greensDec 31–Jan 14
TurnipsDec 31–Jan 14
DillJan 28–Feb 11
CeleryFeb 4–Feb 11
CauliflowerJan 14–Jan 28
LeeksJan 14–Jan 28
Swiss chardJan 14–Feb 11
ParsleyJan 14–Feb 4
Tulip bulbsDec 15–Jan 15
GarlicOct 15–Nov 30
Daffodil bulbsOct 15–Nov 30
StrawberriesDec 31–Jan 14
AsparagusDec 31–Jan 14Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Dec 24 | Jan 28 | Feb 27 | Dec 1 | Dec 18 | Jan 24 |
| Hard freeze, 28°F | Dec 12 | Jan 1 | Feb 9 | Dec 9 | Dec 27 | Feb 3 |
Read the spring 10% column as the date after which only one year in ten still gets frost. That is the safer date for tomatoes, peppers and basil.
Where these numbers come from
NOAA station Elsinore (USC00042805) sits 8.6 miles from the center of Temescal Valley at 1,268 feet. Its averages cover 1991 to 2020. Low spots, valleys and open fields can keep getting frost a week or two after the station stops; city centers and lakeshores usually get less of it.
Questions
When is the last frost in Temescal Valley, CA?
The average last frost date in Temescal Valley is January 28, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after February 27.
When is the first frost in Temescal Valley?
The first frost in fall usually comes around December 18. One year in ten it arrives before December 1.
How long is the growing season in Temescal Valley?
About 329 days between the average last and first frost.
When should I plant tomatoes in Temescal Valley?
Plant tomato seedlings outside from February 15 to March 1. Start seeds indoors six to eight weeks earlier.
Nearby in California
- Lake ElsinoreJan 28
- CoronaJan 17
- Rancho Santa Margaritano frost
- NorcoJan 17
- RiversideJan 9
- Lake Forestno frost
- PerrisJan 28
- Mission ViejoJan 6
- WildomarJan 28
- EastvaleJan 17
- Jurupa ValleyJan 9
- MenifeeJan 28