Frost Dates for Philomath, OR

Based on data from Corvallis Water Bureau weather station, 5 miles away

Elevation: 282 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. 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 8

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 October 1

Hard Freeze (28°F)

Last Spring Hard Freeze April 25
First Fall Hard Freeze October 28
44.54°N, 123.37°W © OpenStreetMap

Growing Season

146 Days May 15 to October 8

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) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January47°37°28°
February51°40°28°
March56°43°31°
April61°47°33°
May69°54°39°
June74°58°43°
July82°64°46°
August83°64°46°
September77°60°42°
October65°51°36°
November53°42°31°
December46°37°28°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January8.9
February6.8
March6.4
April3.9
May3.0
June2.1
July0.8
August1.1
September3.1
October4.3
November7.9
December11.1

Sunrise / Sunset

Daylight Pacific Time (PT) Longest: 15h 22m · Shortest: 8h 38m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month Sunrise Sunset Daylight
January7:53 AM4:53 PM9h 00m
February7:22 AM5:35 PM10h 13m
March7:35 AM7:12 PM11h 38m
April6:37 AM7:52 PM13h 15m
May5:52 AM8:28 PM14h 36m
June5:34 AM8:54 PM15h 21m
July5:48 AM8:51 PM15h 02m
August6:22 AM8:14 PM13h 52m
September6:60 AM7:17 PM12h 17m
October7:37 AM6:21 PM10h 43m
November7:19 AM4:39 PM9h 20m
December7:50 AM4:29 PM8h 39m

Nearby Stations

Corvallis 10 Ssw, OR April 11 - October 30 Corvallis State Univ, OR April 17 - October 28 Alsea Fh (Fall Creek), OR April 13 - November 3 Falls City 2 Ssw, OR April 18 - November 7 Lebanon, ORMarch 14 - November 18 Eugene Mahlon Sweet AP, OR April 11 - October 23

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