Frost Dates for Acton, ON

Based on data from Georgetown Wwtp weather station, 8 miles away

Elevation: 349 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 19
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 1

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 23
First Fall Frost September 26

Hard Freeze (−2°C)

Last Spring Hard Freeze May 4
First Fall Hard Freeze October 13
43.63°N, 80.04°W © OpenStreetMap

Growing Season

135 Days May 19 to October 1

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.

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°-10°
February0°-5°-10°
March5°0°-6°
April12°6°0°
May19°13°5°
June25°18°11°
July27°20°13°
August26°19°13°
September23°16°8°
October15°9°3°
November8°3°-2°
December2°-2°-6°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January76
February48
March61
April79
May74
June71
July66
August64
September71
October66
November74
December58

Sunrise / Sunset

Daylight Eastern Time (ET) Longest: 15h 15m · Shortest: 8h 45m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month Sunrise Sunset Daylight
January7:56 AM5:02 PM9h 06m
February7:26 AM5:42 PM10h 16m
March7:40 AM7:18 PM11h 38m
April6:43 AM7:56 PM13h 13m
May6:00 AM8:31 PM14h 31m
June5:43 AM8:57 PM15h 14m
July5:57 AM8:53 PM14h 57m
August6:30 AM8:18 PM13h 48m
September7:06 AM7:22 PM12h 17m
October7:42 AM6:28 PM10h 46m
November7:22 AM4:47 PM9h 25m
December7:52 AM4:38 PM8h 46m

Nearby Stations

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