Frost Dates for Osburn, ID

Based on data from Wallace weather station, 4 miles away

Elevation: 2520 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 5
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 2

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 11
First Fall Frost September 27

Hard Freeze (28°F)

Last Spring Hard Freeze April 19
First Fall Hard Freeze October 18
47.51°N, 116.00°W © OpenStreetMap

Growing Season

150 Days May 5 to October 2

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 6b

Avg. annual minimum: −5 to 0°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dsb Warm-Summer Continental (Dry Summer)

Warm, dry summers and cold, snowy winters. Common in mountain regions. Moderate growing season with irrigation needs in summer.

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
January34°29°24°
February39°32°24°
March46°37°29°
April55°44°34°
May65°53°41°
June71°59°47°
July81°66°51°
August81°66°50°
September71°57°44°
October55°45°36°
November41°35°29°
December33°29°24°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January5.3
February4.5
March5.4
April4.5
May4.8
June4.4
July3.8
August3.3
September4.0
October5.3
November5.6
December6.3

Sunrise / Sunset

Daylight Pacific Time (PT) Longest: 15h 46m · Shortest: 8h 14m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month Sunrise Sunset Daylight
January7:34 AM4:13 PM8h 39m
February6:58 AM4:59 PM10h 01m
March7:06 AM6:41 PM11h 35m
April6:02 AM7:26 PM13h 23m
May5:13 AM8:07 PM14h 54m
June4:52 AM8:36 PM15h 44m
July5:07 AM8:31 PM15h 24m
August5:46 AM7:50 PM14h 04m
September6:29 AM6:48 PM12h 19m
October7:11 AM5:46 PM10h 35m
November6:58 AM3:60 PM9h 02m
December7:32 AM3:47 PM8h 16m

Nearby Stations

Mullan, IDMay 12 - September 30 Kellogg, IDMay 14 - September 26 Prichard 3 Ese, ID May 31 - September 5 Mullan Pass Vor/Dme, ID June 10 - September 23 Haugan 1 W, MT Thompson Falls Ph, MT May 7 - October 4

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