Frost Dates for Red Bluff, CA

Based on data from Red Bluff Muni AP weather station, 2 miles away

Elevation: 305 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 22
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 29

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 5
First Fall Frost November 22

Hard Freeze (28°F)

Last Spring Hard Freeze January 13
First Fall Hard Freeze December 15
40.18°N, 122.24°W © OpenStreetMap

Growing Season

281 Days February 22 to November 29

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.
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
January57°47°38°
February61°51°41°
March66°55°44°
April72°60°47°
May82°68°55°
June91°76°62°
July98°82°66°
August96°80°64°
September91°75°59°
October79°65°51°
November64°53°43°
December56°47°38°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January7.0
February5.8
March4.7
April3.4
May3.1
June0.6
July0.0
August0.0
September0.0
October3.0
November5.7
December6.7

Sunrise / Sunset

Daylight Pacific Time (PT) Longest: 14h 52m · Shortest: 9h 08m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month Sunrise Sunset Daylight
January7:35 AM5:02 PM9h 27m
February7:10 AM5:38 PM10h 28m
March7:28 AM7:09 PM11h 41m
April6:37 AM7:41 PM13h 04m
May5:59 AM8:12 PM14h 13m
June5:44 AM8:34 PM14h 51m
July5:57 AM8:32 PM14h 35m
August6:25 AM8:01 PM13h 36m
September6:56 AM7:11 PM12h 15m
October7:27 AM6:21 PM10h 54m
November7:02 AM4:46 PM9h 44m
December7:30 AM4:39 PM9h 09m

Nearby Stations

Redding Muni AP, CA March 3 - November 21 Orland, CA February 25 - December 2 Whiskeytown Rsvr, CA February 13 - December 13 Mineral, CAJune 10 - September 13 De Sabla, CA April 17 - November 11 Redding 12 Wnw, CA March 19 - November 22

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