Frost Dates for St Prosper, QC

Elevation: 282 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. June 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. September 2

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 June 14
First Fall Frost August 24

Hard Freeze (−2°C)

Last Spring Hard Freeze May 21
First Fall Hard Freeze September 23
46.22°N, 70.50°W © OpenStreetMap

Growing Season

85 Days June 9 to September 2

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 3b

Avg. annual minimum: −37 to −34°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-7°-12°-18°
February-5°-11°-17°
March2°-5°-11°
April9°3°-3°
May17°10°3°
June23°16°9°
July25°18°11°
August24°17°10°
September19°12°6°
October11°6°0°
November4°0°-5°
December-3°-8°-12°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January76
February71
March56
April84
May84
June127
July124
August112
September99
October112
November79
December86

Sunrise / Sunset

Daylight Longest: 15h 35m · Shortest: 8h 25m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:36 AM4:24 PM8h 48m
February6:57 AM5:03 PM10h 06m
March6:12 AM5:48 PM11h 36m
April5:20 AM6:40 PM13h 20m
May4:37 AM7:23 PM14h 46m
June4:13 AM7:47 PM15h 34m
July4:23 AM7:37 PM15h 14m
August5:01 AM6:59 PM13h 59m
September5:51 AM6:09 PM12h 19m
October6:41 AM5:19 PM10h 39m
November7:25 AM4:35 PM9h 10m
December7:47 AM4:13 PM8h 26m

Nearby Stations

St Georges, QC May 26 - September 20 St Come De Liniere, QC June 6 - September 4 Beauceville, QC May 19 - September 24 Ste Germaine, QC May 17 - September 27 St Camille, QC May 28 - September 11 Vallee Jonction, QC May 20 - September 26

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