Frost Dates for North Bay, Canada

Based on data from North Bay A weather station, 4 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 15
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 29
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 21
First Fall Frost September 24

Hard Freeze (−2°C)

Last Spring Hard Freeze April 30
First Fall Hard Freeze October 14
46.32°N, -79.47°W © OpenStreetMap

Growing Season

137 Days May 15 to September 29

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 4a

Avg. annual minimum: −30 to −25°F (−34 to −32°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

-20° -5° 10° 25°
-12°
High: -8°C
Avg: -12°C
Low: -17°C
Jan
-10°
High: -5°C
Avg: -10°C
Low: -15°C
Feb
-4°
High: 1°C
Avg: -4°C
Low: -9°C
Mar
4°
High: 9°C
Avg: 4°C
Low: -1°C
Apr
12°
High: 17°C
Avg: 12°C
Low: 6°C
May
17°
High: 22°C
Avg: 17°C
Low: 12°C
Jun
19°
High: 24°C
Avg: 19°C
Low: 14°C
Jul
18°
High: 23°C
Avg: 18°C
Low: 13°C
Aug
13°
High: 18°C
Avg: 13°C
Low: 9°C
Sep
7°
High: 11°C
Avg: 7°C
Low: 2°C
Oct
0°
High: 3°C
Avg: 0°C
Low: -4°C
Nov
-8°
High: -4°C
Avg: -8°C
Low: -12°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
76 mm
76.2 mm
Jan
66 mm
66.0 mm
Feb
58 mm
58.4 mm
Mar
71 mm
71.1 mm
Apr
94 mm
94.0 mm
May
107 mm
106.7 mm
Jun
109 mm
109.2 mm
Jul
91 mm
91.4 mm
Aug
119 mm
119.4 mm
Sep
104 mm
104.1 mm
Oct
102 mm
101.6 mm
Nov
81 mm
81.3 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h15h15.5h15.5h14h12.5h10.5h9h8.5h
Jan: 7:36 AM – 4:24 PM · 8h 47m
Feb: 6:57 AM – 5:03 PM · 10h 05m
Mar: 6:12 AM – 5:48 PM · 11h 36m
Apr: 5:20 AM – 6:40 PM · 13h 20m
May: 4:36 AM – 7:24 PM · 14h 47m
Jun: 4:13 AM – 7:47 PM · 15h 35m
Jul: 4:22 AM – 7:38 PM · 15h 15m
Aug: 5:00 AM – 6:60 PM · 13h 59m
Sep: 5:51 AM – 6:09 PM · 12h 19m
Oct: 6:41 AM – 5:19 PM · 10h 38m
Nov: 7:25 AM – 4:35 PM · 9h 09m
Dec: 7:48 AM – 4:12 PM · 8h 25m
Daylight Longest: 15h 37m · Shortest: 8h 24m

Nearby Stations

Powassan, Canada May 26 - September 18 Barrage Temiscamingue, Canada May 16 - October 10 Monetville, Canada May 21 - September 23 Dunchurch, Canada May 28 - September 18 Sudbury A, Canada May 16 - October 1 Haliburton 3, Canada May 28 - September 18

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