Frost Dates for Mount Brydges, ON

Based on data from Strathroy-Mullifarry weather station, 10 miles away

Elevation: 246 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 9
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. October 14

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 14
First Fall Frost October 9

Hard Freeze (−2°C)

Last Spring Hard Freeze April 25
First Fall Hard Freeze October 31
42.90°N, 81.48°W © OpenStreetMap

Growing Season

158 Days May 9 to October 14

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 5b

Avg. annual minimum: −26 to −23°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-1°-5°-8°
February0°-4°-8°
March5°1°-4°
April13°7°2°
May20°14°8°
June25°19°13°
July27°22°16°
August26°21°15°
September23°17°11°
October15°11°6°
November8°4°0°
December2°-2°-5°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January76
February69
March61
April89
May91
June89
July79
August79
September94
October94
November99
December79

Sunrise / Sunset

Daylight Eastern Time (ET) Longest: 15h 11m · Shortest: 8h 49m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month Sunrise Sunset Daylight
January8:01 AM5:11 PM9h 10m
February7:32 AM5:50 PM10h 18m
March7:47 AM7:26 PM11h 39m
April6:51 AM8:02 PM13h 11m
May6:09 AM8:37 PM14h 28m
June5:52 AM9:02 PM15h 09m
July6:06 AM8:58 PM14h 52m
August6:38 AM8:24 PM13h 46m
September7:13 AM7:29 PM12h 17m
October7:48 AM6:35 PM10h 47m
November7:27 AM4:56 PM9h 29m
December7:57 AM4:48 PM8h 50m

Nearby Stations

Thedford, ONMay 9 - October 15 St Thomas Wpcp, ON May 7 - October 13 New Glasgow, ONMay 4 - October 16 Port Huron, MI April 19 - November 3 Stratford Wwtp, ON May 11 - October 11 Foldens, ONMay 2 - October 15

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