Frost Dates for Thessalon, ON

Based on data from Detour Village weather station, 24 miles away

Elevation: 175 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. May 5
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 20
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 11
First Fall Frost October 14

Hard Freeze (28°F)

Last Spring Hard Freeze April 25
First Fall Hard Freeze November 1
46.25°N, -83.57°W © OpenStreetMap

Growing Season

168 Days May 5 to October 20

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 5b

Avg. annual minimum: −15 to −10°F (−26 to −23°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

0° 20° 40° 60° 80°
16°
High: 24°F
Avg: 16°F
Low: 9°F
Jan
17°
High: 26°F
Avg: 17°F
Low: 9°F
Feb
26°
High: 34°F
Avg: 26°F
Low: 17°F
Mar
38°
High: 46°F
Avg: 38°F
Low: 30°F
Apr
50°
High: 59°F
Avg: 50°F
Low: 42°F
May
61°
High: 70°F
Avg: 61°F
Low: 52°F
Jun
66°
High: 75°F
Avg: 66°F
Low: 58°F
Jul
66°
High: 74°F
Avg: 66°F
Low: 58°F
Aug
59°
High: 66°F
Avg: 59°F
Low: 51°F
Sep
46°
High: 53°F
Avg: 46°F
Low: 40°F
Oct
35°
High: 41°F
Avg: 35°F
Low: 30°F
Nov
25°
High: 31°F
Avg: 25°F
Low: 19°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 5.0"
2.8"
2.80"
Jan
2.4"
2.36"
Feb
3.0"
3.05"
Mar
4.0"
3.97"
Apr
4.0"
3.96"
May
4.3"
4.34"
Jun
4.2"
4.16"
Jul
5.0"
5.05"
Aug
4.6"
4.61"
Sep
4.6"
4.61"
Oct
4.0"
4.02"
Nov
3.5"
3.55"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h15h15.5h15h14h12.5h10.5h9h8.5h
Jan: 8:20 AM – 5:10 PM · 8h 50m
Feb: 7:47 AM – 5:54 PM · 10h 07m
Mar: 7:57 AM – 7:34 PM · 11h 37m
Apr: 6:56 AM – 8:15 PM · 13h 19m
May: 6:09 AM – 8:54 PM · 14h 45m
Jun: 5:50 AM – 9:22 PM · 15h 32m
Jul: 6:05 AM – 9:18 PM · 15h 13m
Aug: 6:41 AM – 8:39 PM · 13h 58m
Sep: 7:21 AM – 7:39 PM · 12h 18m
Oct: 8:01 AM – 6:40 PM · 10h 39m
Nov: 7:45 AM – 4:56 PM · 9h 11m
Dec: 8:18 AM – 4:45 PM · 8h 28m
Daylight Eastern Time (ET) Longest: 15h 34m · Shortest: 8h 27m

Nearby Stations

Pickford 3ne, MI May 31 - September 25 Rudyard 5se, MI June 1 - September 21 Cheboygan, MIMay 11 - October 11 Rudyard 4n, MIMay 24 - October 1 Sault Ste Marie Sanderson Fld, MI May 9 - October 11 Rogers City, MI May 10 - October 14

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