Frost Dates for Merlin, OR

Based on data from Sexton Summit weather station, 6 miles away

Elevation: 919 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 16
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 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 May 27
First Fall Frost October 21

Hard Freeze (28°F)

Last Spring Hard Freeze April 23
First Fall Hard Freeze November 17
42.52°N, 123.42°W © OpenStreetMap

Growing Season

167 Days May 16 to October 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 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
January43°38°33°
February44°38°33°
March46°40°33°
April52°44°35°
May61°51°41°
June68°57°46°
July77°65°53°
August77°65°54°
September70°61°51°
October58°51°43°
November47°42°36°
December41°37°32°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January6.2
February4.6
March5.0
April3.8
May3.3
June2.4
July0.0
August0.0
September2.6
October4.0
November5.1
December6.8

Sunrise / Sunset

Daylight Pacific Time (PT) Longest: 15h 08m · Shortest: 8h 52m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month Sunrise Sunset Daylight
January7:47 AM4:59 PM9h 12m
February7:18 AM5:38 PM10h 20m
March7:33 AM7:13 PM11h 39m
April6:39 AM7:49 PM13h 10m
May5:57 AM8:23 PM14h 26m
June5:40 AM8:47 PM15h 07m
July5:54 AM8:44 PM14h 50m
August6:25 AM8:10 PM13h 44m
September6:60 AM7:16 PM12h 16m
October7:34 AM6:23 PM10h 48m
November7:13 AM4:44 PM9h 31m
December7:43 AM4:36 PM8h 53m

Nearby Stations

Grants Pass, OR April 8 - October 28 Riddle, ORMarch 31 - November 6 Medford Rogue Vly AP, OR April 8 - October 29 Ruch, ORMay 4 - October 13 Cave Junction 1 Wnw, OR May 1 - October 12 Illahe, ORMarch 30 - November 17

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