Frost Dates for Bonsall, CA

Based on data from Vista weather station, 4 miles away

Elevation: 180 ft

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. January 30
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. January 7

This location has a nearly year-round growing season with a brief frost risk period in winter.

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost February 24
First Fall Frost December 24

Hard Freeze (28°F)

Last Spring Hard Freeze December 30
First Fall Hard Freeze December 30
33.29°N, 117.23°W © OpenStreetMap

Growing Season

343 Days January 30 to January 7

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 10a

Avg. annual minimum: 30 to 35°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
BSk Cold Semi-Arid (Steppe)

Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January66°56°46°
February65°56°46°
March67°58°48°
April69°60°50°
May71°63°55°
June75°67°59°
July79°71°62°
August81°72°63°
September81°71°61°
October76°66°56°
November71°60°50°
December65°55°45°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January6.2
February4.8
March4.6
April2.7
May0.8
June0.0
July0.0
August0.0
September0.0
October0.2
November3.9
December5.3

Sunrise / Sunset

Daylight Pacific Time (PT) Longest: 14h 12m · Shortest: 9h 48m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month Sunrise Sunset Daylight
January6:57 AM4:59 PM10h 02m
February6:39 AM5:28 PM10h 49m
March7:06 AM6:51 PM11h 45m
April6:24 AM7:14 PM12h 50m
May5:54 AM7:37 PM13h 43m
June5:44 AM7:55 PM14h 11m
July5:55 AM7:54 PM13h 60m
August6:16 AM7:30 PM13h 14m
September6:38 AM6:49 PM12h 12m
October6:60 AM6:09 PM11h 09m
November6:27 AM4:41 PM10h 15m
December6:50 AM4:39 PM9h 49m

Nearby Stations

Oceanside Muni AP, CA January 23 - December 11 Carlsbad Palomar AP, CA Camp Pendleton Mcas, CA February 16 - December 8 Oceanside Marina, CA Valley Ctr 1n, CA February 19 - December 1 Escondido #2, CA January 2 - December 30

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