Frost Dates for Colville Lake, NT

Elevation: 259 m

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. June 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. September 8
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 June 6
First Fall Frost September 1

Hard Freeze (−2°C)

Last Spring Hard Freeze May 26
First Fall Hard Freeze September 18
67.05°N, -126.08°W © OpenStreetMap

Growing Season

98 Days June 2 to September 8

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 2a

Avg. annual minimum: −50 to −45°F (−46 to −43°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Dfc Subarctic

Short, cool summers and long, very cold winters. Growing seasons of 3–4 months require fast-maturing varieties. Root vegetables, potatoes, and cold-hardy greens are the most reliable.

Köppen climate map

Temperature

-35° -20° -5° 10°
-27°
High: -23°C
Avg: -27°C
Low: -31°C
Jan
-24°
High: -19°C
Avg: -24°C
Low: -28°C
Feb
-20°
High: -15°C
Avg: -20°C
Low: -26°C
Mar
-10°
High: -4°C
Avg: -10°C
Low: -16°C
Apr
2°
High: 7°C
Avg: 2°C
Low: -4°C
May
11°
High: 16°C
Avg: 11°C
Low: 6°C
Jun
14°
High: 19°C
Avg: 14°C
Low: 10°C
Jul
11°
High: 15°C
Avg: 11°C
Low: 7°C
Aug
5°
High: 8°C
Avg: 5°C
Low: 2°C
Sep
-5°
High: -2°C
Avg: -5°C
Low: -8°C
Oct
-17°
High: -14°C
Avg: -17°C
Low: -21°C
Nov
-24°
High: -20°C
Avg: -24°C
Low: -28°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 20 mm 40 mm 60 mm 80 mm
71 mm
71.1 mm
Jan
15 mm
15.2 mm
Feb
13 mm
12.7 mm
Mar
3 mm
2.5 mm
Apr
13 mm
12.7 mm
May
15 mm
15.2 mm
Jun
10 mm
10.2 mm
Jul
20 mm
20.3 mm
Aug
25 mm
25.4 mm
Sep
8 mm
7.6 mm
Oct
5 mm
5.1 mm
Nov
8 mm
7.6 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec3h7.5h11h15h19h24h21h16.5h12.5h9h4.5h0h
Jan: 10:27 AM – 1:33 PM · 3h 05m
Feb: 8:16 AM – 3:44 PM · 7h 29m
Mar: 6:27 AM – 5:33 PM · 11h 07m
Apr: 4:28 AM – 7:32 PM · 15h 04m
May: 2:26 AM – 9:34 PM · 19h 08m
Jun: 24h (Midnight Sun)
Jul: 1:26 AM – 10:34 PM · 21h 09m
Aug: 3:38 AM – 8:22 PM · 16h 43m
Sep: 5:39 AM – 6:21 PM · 12h 42m
Oct: 7:34 AM – 4:26 PM · 8h 52m
Nov: 9:40 AM – 2:20 PM · 4h 39m
Dec: 0h (Polar Night)
Daylight Longest: 24h 00m · Shortest: 0h 00m

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