Frost Dates for Illahe, OR

Elevation: 106 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 17

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 12
First Fall Frost November 5

Hard Freeze (28°F)

Last Spring Hard Freeze February 1
First Fall Hard Freeze December 10
42.63°N, 124.06°W © OpenStreetMap

Growing Season

232 Days March 30 to November 17

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.

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January51°44°37°
February54°46°38°
March59°49°39°
April65°52°40°
May75°59°43°
June81°65°49°
July90°71°52°
August91°71°52°
September86°67°48°
October69°56°44°
November55°47°40°
December51°43°36°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January10.0
February9.0
March9.3
April6.3
May4.5
June3.0
July0.5
August0.0
September2.9
October4.9
November7.7
December9.6

Sunrise / Sunset

Daylight Longest: 15h 08m · Shortest: 8h 52m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:24 AM4:36 PM9h 12m
February6:50 AM5:10 PM10h 20m
March6:10 AM5:50 PM11h 39m
April5:25 AM6:35 PM13h 10m
May4:47 AM7:13 PM14h 26m
June4:27 AM7:33 PM15h 07m
July4:35 AM7:25 PM14h 50m
August5:08 AM6:52 PM13h 44m
September5:52 AM6:08 PM12h 16m
October6:36 AM5:24 PM10h 48m
November7:15 AM4:45 PM9h 31m
December7:34 AM4:26 PM8h 53m

Nearby Stations

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