Frost Dates for Chambly, Canada

Based on data from Marieville weather station, 8 miles away

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. May 4
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. October 6
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 May 9
First Fall Frost October 1

Hard Freeze (−2°C)

Last Spring Hard Freeze April 20
First Fall Hard Freeze October 21
45.45°N, -73.28°W © OpenStreetMap

Growing Season

155 Days May 4 to October 6

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 4b

Avg. annual minimum: −25 to −20°F (−32 to −29°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

-15° 0° 15° 30°
-10°
High: -5°C
Avg: -10°C
Low: -14°C
Jan
-9°
High: -4°C
Avg: -9°C
Low: -14°C
Feb
-2°
High: 2°C
Avg: -2°C
Low: -7°C
Mar
6°
High: 11°C
Avg: 6°C
Low: 1°C
Apr
14°
High: 20°C
Avg: 14°C
Low: 8°C
May
19°
High: 24°C
Avg: 19°C
Low: 13°C
Jun
21°
High: 26°C
Avg: 21°C
Low: 16°C
Jul
20°
High: 26°C
Avg: 20°C
Low: 15°C
Aug
16°
High: 21°C
Avg: 16°C
Low: 10°C
Sep
9°
High: 13°C
Avg: 9°C
Low: 4°C
Oct
2°
High: 6°C
Avg: 2°C
Low: -1°C
Nov
-5°
High: -1°C
Avg: -5°C
Low: -8°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
71 mm
71.1 mm
Jan
64 mm
63.5 mm
Feb
69 mm
68.6 mm
Mar
91 mm
91.4 mm
Apr
99 mm
99.1 mm
May
99 mm
99.1 mm
Jun
122 mm
121.9 mm
Jul
99 mm
99.1 mm
Aug
112 mm
111.8 mm
Sep
130 mm
129.5 mm
Oct
81 mm
81.3 mm
Nov
94 mm
94.0 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h14.5h15.5h15h14h12.5h10.5h9.5h8.5h
Jan: 7:33 AM – 4:27 PM · 8h 54m
Feb: 6:55 AM – 5:05 PM · 10h 09m
Mar: 6:11 AM – 5:49 PM · 11h 37m
Apr: 5:21 AM – 6:39 PM · 13h 17m
May: 4:39 AM – 7:21 PM · 14h 41m
Jun: 4:16 AM – 7:44 PM · 15h 27m
Jul: 4:26 AM – 7:34 PM · 15h 09m
Aug: 5:02 AM – 6:58 PM · 13h 55m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:40 AM – 5:20 PM · 10h 41m
Nov: 7:22 AM – 4:38 PM · 9h 15m
Dec: 7:44 AM – 4:16 PM · 8h 32m
Daylight Longest: 15h 29m · Shortest: 8h 31m

Nearby Stations

Iberville, Canada May 5 - October 6 L'Acadie, CanadaMay 1 - October 7 Sabrevois, Canada May 1 - October 6 Farnham, CanadaMay 9 - October 3 Ste Madeleine, Canada May 9 - October 5 St Hyacinthe 2, Canada May 5 - October 4

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