Frost Dates for Yreka, CA

Elevation: 826 m

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. April 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. October 18

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 May 7
First Fall Frost October 12

Hard Freeze (28°F)

Last Spring Hard Freeze April 12
First Fall Hard Freeze November 1
41.70°N, 122.64°W © OpenStreetMap

Growing Season

171 Days April 30 to October 18

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 8a

Avg. annual minimum: 10 to 15°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 Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January46°37°27°
February52°40°29°
March58°45°32°
April64°50°37°
May74°59°43°
June83°66°49°
July93°74°55°
August92°73°54°
September84°66°47°
October70°54°38°
November54°43°31°
December45°36°27°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January3.7
February2.9
March2.3
April2.1
May2.5
June2.2
July1.0
August0.0
September0.0
October3.0
November3.4
December4.0

Sunrise / Sunset

Daylight Longest: 15h 02m · Shortest: 8h 58m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:21 AM4:39 PM9h 18m
February6:49 AM5:11 PM10h 23m
March6:10 AM5:50 PM11h 40m
April5:26 AM6:34 PM13h 08m
May4:49 AM7:11 PM14h 21m
June4:30 AM7:30 PM15h 01m
July4:38 AM7:22 PM14h 45m
August5:09 AM6:51 PM13h 41m
September5:52 AM6:08 PM12h 16m
October6:35 AM5:25 PM10h 51m
November7:12 AM4:48 PM9h 36m
December7:30 AM4:30 PM8h 59m

Nearby Stations

Montague Siskiyou Co AP, CA May 12 - October 8 Copco #1 Dam, CA May 4 - October 21 Callahan, CAMay 20 - October 5 Mt Shasta, CAMay 6 - October 12 Mt Shasta, CAMay 15 - October 6 Ashland, ORMay 6 - October 8

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