Frost Dates for Hearst, Canada

Based on data from Nagagami (Aut) weather station, 23 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. June 7
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 12
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 12
First Fall Frost September 3

Hard Freeze (−2°C)

Last Spring Hard Freeze May 23
First Fall Hard Freeze September 29
49.68°N, -83.67°W © OpenStreetMap

Growing Season

97 Days June 7 to September 12

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 3a

Avg. annual minimum: −40 to −35°F (−40 to −37°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°
-18°
High: -12°C
Avg: -18°C
Low: -23°C
Jan
-16°
High: -9°C
Avg: -16°C
Low: -23°C
Feb
-9°
High: -1°C
Avg: -9°C
Low: -17°C
Mar
0°
High: 7°C
Avg: 0°C
Low: -7°C
Apr
8°
High: 15°C
Avg: 8°C
Low: 1°C
May
15°
High: 22°C
Avg: 15°C
Low: 7°C
Jun
17°
High: 24°C
Avg: 17°C
Low: 11°C
Jul
16°
High: 22°C
Avg: 16°C
Low: 9°C
Aug
11°
High: 17°C
Avg: 11°C
Low: 6°C
Sep
4°
High: 8°C
Avg: 4°C
Low: -1°C
Oct
-5°
High: 0°C
Avg: -5°C
Low: -9°C
Nov
-13°
High: -8°C
Avg: -13°C
Low: -18°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 30 mm 60 mm 90 mm
15 mm
15.2 mm
Jan
18 mm
17.8 mm
Feb
30 mm
30.5 mm
Mar
43 mm
43.2 mm
Apr
76 mm
76.2 mm
May
91 mm
91.4 mm
Jun
91 mm
91.4 mm
Jul
81 mm
81.3 mm
Aug
99 mm
99.1 mm
Sep
79 mm
78.7 mm
Oct
56 mm
55.9 mm
Nov
30 mm
30.5 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14h12.5h10.5h9h8h
Jan: 7:50 AM – 4:10 PM · 8h 21m
Feb: 7:05 AM – 4:55 PM · 9h 50m
Mar: 6:13 AM – 5:47 PM · 11h 33m
Apr: 5:15 AM – 6:45 PM · 13h 30m
May: 4:25 AM – 7:35 PM · 15h 10m
Jun: 3:58 AM – 8:02 PM · 16h 05m
Jul: 4:09 AM – 7:51 PM · 15h 42m
Aug: 4:53 AM – 7:07 PM · 14h 15m
Sep: 5:50 AM – 6:10 PM · 12h 21m
Oct: 6:46 AM – 5:14 PM · 10h 28m
Nov: 7:37 AM – 4:23 PM · 8h 46m
Dec: 8:03 AM – 3:57 PM · 7h 55m
Daylight Longest: 16h 07m · Shortest: 7h 53m

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