Frost Dates for Ft Clatsop Natl Mem, OR

Elevation: 13 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. March 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. November 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 April 11
First Fall Frost November 8

Hard Freeze (28°F)

Last Spring Hard Freeze February 12
First Fall Hard Freeze December 13
46.14°N, 123.88°W © OpenStreetMap

Growing Season

233 Days March 30 to November 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 8b

Avg. annual minimum: 15 to 20°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
January49°43°38°
February51°44°37°
March54°47°39°
April58°49°41°
May64°55°45°
June67°58°49°
July70°62°53°
August71°62°53°
September70°60°49°
October61°53°45°
November53°47°40°
December49°43°37°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January9.2
February7.2
March7.4
April5.5
May3.9
June2.6
July1.1
August1.3
September3.6
October7.1
November10.0
December10.0

Sunrise / Sunset

Daylight Longest: 15h 35m · Shortest: 8h 25m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:36 AM4:24 PM8h 49m
February6:57 AM5:03 PM10h 06m
March6:12 AM5:48 PM11h 37m
April5:20 AM6:40 PM13h 19m
May4:37 AM7:23 PM14h 46m
June4:13 AM7:47 PM15h 33m
July4:23 AM7:37 PM15h 14m
August5:01 AM6:59 PM13h 58m
September5:51 AM6:09 PM12h 18m
October6:41 AM5:19 PM10h 39m
November7:25 AM4:35 PM9h 11m
December7:47 AM4:13 PM8h 27m

Nearby Stations

Astoria Rgnl AP, OR March 26 - November 11 Seaside, ORApril 2 - November 12 Naselle 2 Ene, WA April 24 - October 20 Long Beach Exp Stn, WA April 6 - October 26 Grays Rvr Hatchery, WA April 27 - October 22 Clatskanie, OR April 24 - October 24

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