Frost Dates for Mill Courtland Woodside Park, ON

Based on data from Roseville weather station, 6 miles away

Elevation: 327 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 9

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 2

Hard Freeze (−2°C)

Last Spring Hard Freeze April 21
First Fall Hard Freeze October 23
43.44°N, 80.48°W © OpenStreetMap

Growing Season

153 Days May 9 to October 9

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-3°-6°-10°
February-1°-5°-9°
March4°-1°-5°
April12°6°1°
May19°13°7°
June24°19°13°
July26°21°15°
August25°20°14°
September21°16°10°
October14°9°5°
November7°3°-1°
December1°-3°-6°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January74
February58
March61
April86
May76
June84
July97
August81
September86
October94
November84
December71

Sunrise / Sunset

Daylight Eastern Time (ET) Longest: 15h 13m · Shortest: 8h 47m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month Sunrise Sunset Daylight
January7:57 AM5:05 PM9h 08m
February7:28 AM5:45 PM10h 17m
March7:42 AM7:21 PM11h 39m
April6:46 AM7:58 PM13h 12m
May6:03 AM8:33 PM14h 30m
June5:46 AM8:58 PM15h 12m
July6:00 AM8:55 PM14h 55m
August6:32 AM8:20 PM13h 47m
September7:08 AM7:25 PM12h 17m
October7:44 AM6:30 PM10h 47m
November7:24 AM4:50 PM9h 27m
December7:54 AM4:42 PM8h 48m

Nearby Stations

Woodstock, ONMay 8 - October 7 Fergus Moe, ONMay 11 - October 8 Glen Allan, ONMay 11 - October 7 Stratford Wwtp, ON May 11 - October 11 Fergus Shand Dam, ON May 6 - October 11 Hamilton Rbg Cs, ON May 4 - October 15

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