Frost Dates for St Prosper, QC

Frost Dates

Last Spring Frost (50%) iA 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%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. September 2
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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 iHardiness 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: −35 to −30°F (−37 to −34°C)

Learn more

Köppen Climate iThe 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

-20° -5° 10° 25°
-12°
High: -7°C
Avg: -12°C
Low: -18°C
Jan
-11°
High: -5°C
Avg: -11°C
Low: -17°C
Feb
-5°
High: 2°C
Avg: -5°C
Low: -11°C
Mar
3°
High: 9°C
Avg: 3°C
Low: -3°C
Apr
10°
High: 17°C
Avg: 10°C
Low: 3°C
May
16°
High: 23°C
Avg: 16°C
Low: 9°C
Jun
18°
High: 25°C
Avg: 18°C
Low: 11°C
Jul
17°
High: 24°C
Avg: 17°C
Low: 10°C
Aug
12°
High: 19°C
Avg: 12°C
Low: 6°C
Sep
6°
High: 11°C
Avg: 6°C
Low: 0°C
Oct
0°
High: 4°C
Avg: 0°C
Low: -5°C
Nov
-8°
High: -3°C
Avg: -8°C
Low: -12°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 50 mm 100 mm 150 mm
76 mm
76.2 mm
Jan
71 mm
71.1 mm
Feb
56 mm
55.9 mm
Mar
84 mm
83.8 mm
Apr
84 mm
83.8 mm
May
127 mm
127.0 mm
Jun
124 mm
124.5 mm
Jul
112 mm
111.8 mm
Aug
99 mm
99.1 mm
Sep
112 mm
111.8 mm
Oct
79 mm
78.7 mm
Nov
86 mm
86.4 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h15h15.5h15h14h12.5h10.5h9h8.5h
Jan: 7:36 AM – 4:24 PM · 8h 48m
Feb: 6:57 AM – 5:03 PM · 10h 06m
Mar: 6:12 AM – 5:48 PM · 11h 36m
Apr: 5:20 AM – 6:40 PM · 13h 20m
May: 4:37 AM – 7:23 PM · 14h 46m
Jun: 4:13 AM – 7:47 PM · 15h 34m
Jul: 4:23 AM – 7:37 PM · 15h 14m
Aug: 5:01 AM – 6:59 PM · 13h 59m
Sep: 5:51 AM – 6:09 PM · 12h 19m
Oct: 6:41 AM – 5:19 PM · 10h 39m
Nov: 7:25 AM – 4:35 PM · 9h 10m
Dec: 7:47 AM – 4:13 PM · 8h 26m
Daylight Longest: 15h 35m · Shortest: 8h 25m

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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