Frost Dates for Sioux Lookout, Canada

Based on data from Sioux Lookout A weather station, 2 miles away

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 17
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 28
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 22
First Fall Frost September 23

Hard Freeze (−2°C)

Last Spring Hard Freeze May 6
First Fall Hard Freeze October 10
50.10°N, -91.92°W © OpenStreetMap

Growing Season

134 Days May 17 to September 28

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 3b

Avg. annual minimum: −35 to −30°F (−37 to −34°C)

Learn more

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

Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

Köppen climate map

Temperature

-25° -10° 5° 20°
-17°
High: -12°C
Avg: -17°C
Low: -22°C
Jan
-14°
High: -8°C
Avg: -14°C
Low: -20°C
Feb
-6°
High: 0°C
Avg: -6°C
Low: -12°C
Mar
3°
High: 9°C
Avg: 3°C
Low: -3°C
Apr
10°
High: 16°C
Avg: 10°C
Low: 4°C
May
16°
High: 22°C
Avg: 16°C
Low: 11°C
Jun
19°
High: 24°C
Avg: 19°C
Low: 13°C
Jul
18°
High: 23°C
Avg: 18°C
Low: 12°C
Aug
12°
High: 17°C
Avg: 12°C
Low: 8°C
Sep
5°
High: 8°C
Avg: 5°C
Low: 1°C
Oct
-4°
High: -1°C
Avg: -4°C
Low: -8°C
Nov
-13°
High: -9°C
Avg: -13°C
Low: -17°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 50 mm 100 mm
33 mm
33.0 mm
Jan
5 mm
5.1 mm
Feb
23 mm
22.9 mm
Mar
48 mm
48.3 mm
Apr
102 mm
101.6 mm
May
117 mm
116.8 mm
Jun
99 mm
99.1 mm
Jul
86 mm
86.4 mm
Aug
99 mm
99.1 mm
Sep
86 mm
86.4 mm
Oct
58 mm
58.4 mm
Nov
36 mm
35.6 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h16h14.5h12.5h10.5h8.5h8h
Jan: 7:51 AM – 4:09 PM · 8h 18m
Feb: 7:06 AM – 4:54 PM · 9h 49m
Mar: 6:14 AM – 5:46 PM · 11h 33m
Apr: 5:14 AM – 6:46 PM · 13h 32m
May: 4:24 AM – 7:36 PM · 15h 12m
Jun: 3:56 AM – 8:04 PM · 16h 08m
Jul: 4:07 AM – 7:53 PM · 15h 45m
Aug: 4:52 AM – 7:08 PM · 14h 17m
Sep: 5:49 AM – 6:11 PM · 12h 21m
Oct: 6:47 AM – 5:13 PM · 10h 27m
Nov: 7:38 AM – 4:22 PM · 8h 44m
Dec: 8:04 AM – 3:56 PM · 7h 51m
Daylight Longest: 16h 10m · Shortest: 7h 50m

Nearby Stations

Upsala (Aut), ON June 2 - September 9 Pickle Lake (Aut), ON May 22 - September 25 Pickle Lake A, ON May 24 - September 27

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