Frost Dates for Mt Shasta, CA

Elevation: 1101 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. May 15
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 6

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 23
First Fall Frost September 30

Hard Freeze (28°F)

Last Spring Hard Freeze April 29
First Fall Hard Freeze October 25
41.32°N, 122.32°W © OpenStreetMap

Growing Season

144 Days May 15 to October 6

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 7b

Avg. annual minimum: 5 to 10°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
January44°36°27°
February48°38°28°
March53°42°31°
April59°47°34°
May68°54°40°
June76°61°46°
July85°68°51°
August84°67°49°
September78°61°44°
October64°51°38°
November50°41°31°
December43°35°27°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January8.1
February7.3
March5.8
April3.8
May3.6
June3.6
July0.0
August0.0
September1.1
October3.7
November5.5
December7.4

Sunrise / Sunset

Daylight Pacific Time (PT) Longest: 14h 59m · Shortest: 9h 01m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month Sunrise Sunset Daylight
January7:39 AM4:59 PM9h 20m
February7:12 AM5:36 PM10h 24m
March7:29 AM7:09 PM11h 40m
April6:36 AM7:43 PM13h 07m
May5:56 AM8:15 PM14h 19m
June5:40 AM8:39 PM14h 58m
July5:54 AM8:36 PM14h 42m
August6:24 AM8:03 PM13h 40m
September6:56 AM7:12 PM12h 16m
October7:29 AM6:20 PM10h 52m
November7:05 AM4:43 PM9h 38m
December7:34 AM4:36 PM9h 02m

Nearby Stations

Mt Shasta, CAMay 6 - October 12 Dunsmuir Trtmt Pl, CA April 23 - October 27 Mccloud, CAMay 28 - September 30 Callahan, CAMay 20 - October 5 Yreka, CAApril 30 - October 18 Montague Siskiyou Co AP, CA May 12 - October 8

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