Frost Dates for Willow Creek, CA

Based on data from Arcata Eureka AP weather station, 25 miles away

Elevation: 610 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. March 8
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 30

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 28
First Fall Frost November 15

Hard Freeze (28°F)

Last Spring Hard Freeze January 20
First Fall Hard Freeze December 24
40.94°N, 123.63°W © OpenStreetMap

Growing Season

267 Days March 8 to November 30

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 Light Frost (32°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January56°48°41°
February57°49°41°
March57°49°41°
April58°50°43°
May60°53°46°
June63°56°49°
July63°57°51°
August65°58°51°
September65°57°49°
October64°54°45°
November59°51°42°
December56°48°40°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January6.6
February6.1
March7.1
April4.7
May2.3
June0.9
July0.3
August0.3
September0.3
October1.7
November4.9
December6.9

Sunrise / Sunset

Daylight Pacific Time (PT) Longest: 14h 57m · Shortest: 9h 03m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month Sunrise Sunset Daylight
January7:45 AM5:07 PM9h 22m
February7:18 AM5:44 PM10h 25m
March7:36 AM7:16 PM11h 40m
April6:44 AM7:50 PM13h 06m
May6:04 AM8:21 PM14h 18m
June5:49 AM8:45 PM14h 56m
July6:02 AM8:42 PM14h 40m
August6:31 AM8:10 PM13h 38m
September7:03 AM7:19 PM12h 15m
October7:35 AM6:28 PM10h 52m
November7:12 AM4:51 PM9h 40m
December7:40 AM4:44 PM9h 04m

Nearby Stations

Eureka Wfo Woodley Island, CA February 22 - December 7 Orick Prairie Creek Park, CA April 12 - November 6 Scotia, CA February 1 - December 19 Grizzly Creek Sp, CA March 4 - November 22 Orleans, CAMarch 12 - November 26 Klamath, CAMarch 16 - November 20

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