Frost Dates for Colville, WA

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 2
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 2
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 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 8
First Fall Frost September 28

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze April 15
First Fall Hard Freeze October 14
48.57°N, -117.94°W © OpenStreetMap

Growing Season

153 Days May 2 to October 2

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

Learn more

Temperature

20° 40° 60° 80°
29°
High: 34°
Avg: 29°
Low: 23°
Jan
33°
High: 42°
Avg: 33°
Low: 24°
Feb
41°
High: 53°
Avg: 41°
Low: 30°
Mar
49°
High: 63°
Avg: 49°
Low: 35°
Apr
58°
High: 72°
Avg: 58°
Low: 43°
May
64°
High: 78°
Avg: 64°
Low: 49°
Jun
71°
High: 88°
Avg: 71°
Low: 53°
Jul
70°
High: 89°
Avg: 70°
Low: 51°
Aug
61°
High: 78°
Avg: 61°
Low: 44°
Sep
48°
High: 61°
Avg: 48°
Low: 35°
Oct
36°
High: 44°
Avg: 36°
Low: 29°
Nov
29°
High: 34°
Avg: 29°
Low: 24°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 4.6"
3.6"
3.65"
Jan
2.8"
2.84"
Feb
3.4"
3.41"
Mar
3.0"
2.95"
Apr
3.7"
3.73"
May
4.3"
4.26"
Jun
3.5"
3.47"
Jul
2.8"
2.75"
Aug
2.8"
2.75"
Sep
3.0"
2.99"
Oct
4.0"
3.96"
Nov
4.6"
4.56"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h16h16h14h12h11h9h8h
Jan: 7:45 AM – 4:15 PM · 8h 31m
Feb: 7:02 AM – 4:58 PM · 9h 56m
Mar: 6:13 AM – 5:47 PM · 11h 34m
Apr: 5:17 AM – 6:43 PM · 13h 27m
May: 4:29 AM – 7:31 PM · 15h 01m
Jun: 4:03 AM – 7:57 PM · 15h 54m
Jul: 4:14 AM – 7:46 PM · 15h 32m
Aug: 4:55 AM – 7:05 PM · 14h 09m
Sep: 5:50 AM – 6:10 PM · 12h 20m
Oct: 6:44 AM – 5:16 PM · 10h 32m
Nov: 7:33 AM – 4:27 PM · 8h 55m
Dec: 7:57 AM – 4:03 PM · 8h 06m
Daylight Longest: 15h 55m · Shortest: 8h 05m

Nearby Stations

Chewelah, WAMay 16 - September 15 Northport, WAMay 8 - October 1 Billings, CanadaMay 3 - October 8 Republic, WAMay 30 - September 10 Warfield Rcs, Canada April 30 - October 12 Boundary Dam, WAMay 4 - October 4

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