Frost Dates for Sainte-Marie, QC

Based on data from Vallee Jonction weather station, 5 miles away

Elevation: 159 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 20
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 26

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 24
First Fall Frost September 20

Hard Freeze (−2°C)

Last Spring Hard Freeze May 3
First Fall Hard Freeze October 10
46.43°N, 71.01°W © OpenStreetMap

Growing Season

129 Days May 20 to September 26

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-5°-11°-17°
February-4°-10°-17°
March2°-4°-10°
April10°4°-1°
May18°12°5°
June24°17°11°
July25°19°13°
August24°18°12°
September20°14°8°
October12°7°2°
November5°0°-4°
December-2°-7°-11°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January56
February56
March64
April81
May97
June117
July130
August122
September109
October104
November71
December71

Sunrise / Sunset

Daylight Eastern Time (ET) Longest: 15h 37m · Shortest: 8h 23m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month Sunrise Sunset Daylight
January7:30 AM4:17 PM8h 47m
February6:56 AM5:01 PM10h 05m
March7:05 AM6:42 PM11h 36m
April6:04 AM7:24 PM13h 20m
May5:16 AM8:04 PM14h 47m
June4:56 AM8:31 PM15h 35m
July5:12 AM8:27 PM15h 16m
August5:48 AM7:48 PM13h 59m
September6:29 AM6:48 PM12h 19m
October7:10 AM5:48 PM10h 38m
November6:54 AM4:03 PM9h 09m
December7:27 AM3:52 PM8h 25m

Nearby Stations

Scott, QCMay 20 - September 27 Beauceville, QC May 19 - September 24 St Pierre De Broughton, QC May 25 - September 24 St Georges, QC May 26 - September 20 St Ephrem, QC May 23 - September 16 Ste Germaine, QC May 17 - September 27

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