Frost Dates for Greenfield, CA

Based on data from King City weather station, 10 miles away

Elevation: 289 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. February 23
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. November 22

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 March 6
First Fall Frost November 13

Hard Freeze (28°F)

Last Spring Hard Freeze January 22
First Fall Hard Freeze December 6
36.32°N, 121.24°W © OpenStreetMap

Growing Season

273 Days February 23 to November 22

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 9a

Avg. annual minimum: 20 to 25°F

Learn more

Köppen Climate

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

Hot, dry summers and mild, wet winters. Classic Mediterranean climate ideal for grapes, olives, tomatoes, and herbs. Summer irrigation is usually necessary.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January63°51°38°
February65°53°40°
March70°56°42°
April74°59°44°
May78°63°48°
June83°67°51°
July85°69°54°
August85°69°54°
September85°68°52°
October80°63°46°
November70°55°41°
December62°50°37°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January4.6
February3.8
March3.3
April1.9
May0.4
June0.0
July0.0
August0.0
September0.0
October0.4
November3.0
December3.8

Sunrise / Sunset

Daylight Pacific Time (PT) Longest: 14h 28m · Shortest: 9h 32m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month Sunrise Sunset Daylight
January7:20 AM5:08 PM9h 48m
February6:59 AM5:39 PM10h 40m
March7:22 AM7:06 PM11h 43m
April6:37 AM7:33 PM12h 56m
May6:03 AM7:58 PM13h 55m
June5:51 AM8:18 PM14h 27m
July6:03 AM8:17 PM14h 14m
August6:27 AM7:50 PM13h 23m
September6:53 AM7:06 PM12h 13m
October7:18 AM6:21 PM11h 03m
November6:49 AM4:51 PM10h 02m
December7:14 AM4:47 PM9h 33m

Nearby Stations

Pinnacles Nm, CA April 23 - November 3 Priest Valley, CA May 8 - October 22 Big Sur Stn, CA February 13 - December 27 Hearst Castle, CA February 13 - February 1 Paicines 4 W, CA April 14 - November 2 Carmel Valley, CA February 20 - December 8

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