Frost Dates for Hazelton, ID
Frost Dates
Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide.
May 7
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date.
October 5
Jan
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Mar
Apr
May
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Dec
30% Probability iOnly 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 13
First Fall Frost
September 29
Hard Freeze (28°F / -2°C)
Last Spring Hard Freeze
April 23
First Fall Hard Freeze
October 17
Growing Season
151 Days
May 7 to October 5
USDA Hardiness Zone iHardiness 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
Temperature
10°
30°
50°
70°
90°
Avg High
Avg Temp
Avg Low
Light Frost (32°F)
Hard Frost (28°F)
Precipitation
0"
2"
4"
4.7"
Sunrise / Sunset
Daylight
Longest: 15h 08m · Shortest: 8h 52m
Nearby Stations
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