Frost Dates for Terrace Bay, ON

Based on data from Cameron Falls (Aut) weather station, 62 miles away

Elevation: 271 m

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. May 27
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. September 24

30% Probability

Only 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 31
First Fall Frost September 19

Hard Freeze (−2°C)

Last Spring Hard Freeze May 14
First Fall Hard Freeze October 11
48.78°N, 87.10°W © OpenStreetMap

Growing Season

120 Days May 27 to September 24

USDA Hardiness Zone

Hardiness 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: −34 to −32°C

Learn more

Köppen Climate

The 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

Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January-9°-14°-19°
February-7°-13°-19°
March0°-6°-12°
April7°2°-4°
May15°8°2°
June21°14°8°
July24°18°11°
August23°17°11°
September18°13°7°
October9°5°1°
November2°-2°-5°
December-6°-10°-14°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January13
February10
March28
April41
May74
June86
July69
August58
September86
October81
November46
December28

Sunrise / Sunset

Daylight Eastern Time (ET) Longest: 16h 01m · Shortest: 7h 59m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month Sunrise Sunset Daylight
January8:50 AM5:16 PM8h 26m
February8:11 AM6:05 PM9h 53m
March8:16 AM7:50 PM11h 34m
April7:09 AM8:38 PM13h 28m
May6:17 AM9:22 PM15h 05m
June5:54 AM9:53 PM15h 59m
July6:10 AM9:47 PM15h 37m
August6:52 AM9:04 PM14h 12m
September7:38 AM7:58 PM12h 21m
October8:24 AM6:53 PM10h 30m
November8:13 AM5:04 PM8h 51m
December8:49 AM4:50 PM8h 01m

Nearby Stations

Welcome Island (Aut), ON May 7 - October 26 Flint, ONJune 13 - August 25 Armstrong (Aut), ON June 10 - August 24

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