Frost Dates for Los Alamos, CA

Based on data from Lompoc weather station, 12 miles away

Elevation: 571 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 20
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. December 19

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 3
First Fall Frost December 10

Hard Freeze (28°F)

Last Spring Hard Freeze January 1
First Fall Hard Freeze December 29
34.74°N, 120.28°W © OpenStreetMap

Growing Season

334 Days January 20 to December 19

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 9b

Avg. annual minimum: 25 to 30°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Csb Warm-Summer Mediterranean

Warm, dry summers and mild, wet winters. Similar to hot-summer Mediterranean but cooler. Great for a wide range of vegetables and fruit trees with moderate water needs.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January65°54°43°
February65°55°44°
March67°57°46°
April68°58°47°
May69°60°51°
June71°62°53°
July73°64°56°
August73°65°56°
September75°65°55°
October74°63°51°
November70°58°46°
December63°53°42°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January6.7
February5.5
March4.5
April2.7
May0.0
June0.0
July0.0
August0.0
September0.0
October1.0
November4.1
December4.8

Sunrise / Sunset

Daylight Pacific Time (PT) Longest: 14h 20m · Shortest: 9h 40m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month Sunrise Sunset Daylight
January7:14 AM5:09 PM9h 55m
February6:54 AM5:39 PM10h 45m
March7:19 AM7:04 PM11h 44m
April6:36 AM7:28 PM12h 53m
May6:04 AM7:52 PM13h 49m
June5:53 AM8:11 PM14h 19m
July6:04 AM8:11 PM14h 07m
August6:27 AM7:45 PM13h 18m
September6:50 AM7:02 PM12h 12m
October7:14 AM6:20 PM11h 06m
November6:42 AM4:51 PM10h 09m
December7:07 AM4:48 PM9h 41m

Nearby Stations

Santa Maria Public AP, CA February 4 - December 13 Twitchell Dam, CA February 4 - December 4 Cachuma Lake, CA April 11 - November 8 Santa Barbara 11 W, CA December 31 - December 20 Pismo Beach, CA February 1 - January 4 Santa Barbara Muni AP, CA January 11 - December 16

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