Frost Dates for Ste Madeleine, 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. May 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. October 5
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 14
First Fall Frost September 30

Hard Freeze (−2°C)

Last Spring Hard Freeze April 21
First Fall Hard Freeze October 14
45.62°N, -73.13°W © OpenStreetMap

Growing Season

149 Days May 9 to October 5

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: -15°C
Jan
-9°
High: -4°C
Avg: -9°C
Low: -14°C
Feb
-2°
High: 3°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: 25°C
Avg: 19°C
Low: 13°C
Jun
21°
High: 27°C
Avg: 21°C
Low: 15°C
Jul
20°
High: 26°C
Avg: 20°C
Low: 14°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: -2°C
Nov
-5°
High: -1°C
Avg: -5°C
Low: -9°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
76 mm
76.2 mm
Jan
56 mm
55.9 mm
Feb
61 mm
61.0 mm
Mar
91 mm
91.4 mm
Apr
99 mm
99.1 mm
May
104 mm
104.1 mm
Jun
112 mm
111.8 mm
Jul
94 mm
94.0 mm
Aug
99 mm
99.1 mm
Sep
109 mm
109.2 mm
Oct
81 mm
81.3 mm
Nov
91 mm
91.4 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h14.5h15.5h15h14h12.5h10.5h9h8.5h
Jan: 7:34 AM – 4:26 PM · 8h 53m
Feb: 6:56 AM – 5:04 PM · 10h 08m
Mar: 6:12 AM – 5:48 PM · 11h 37m
Apr: 5:21 AM – 6:39 PM · 13h 18m
May: 4:39 AM – 7:21 PM · 14h 43m
Jun: 4:15 AM – 7:45 PM · 15h 29m
Jul: 4:25 AM – 7:35 PM · 15h 10m
Aug: 5:02 AM – 6:58 PM · 13h 56m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:40 AM – 5:20 PM · 10h 40m
Nov: 7:23 AM – 4:37 PM · 9h 14m
Dec: 7:45 AM – 4:15 PM · 8h 31m
Daylight Longest: 15h 30m · Shortest: 8h 30m

Nearby Stations

St Amable, QCMay 7 - October 2 St Hyacinthe 2, QC May 5 - October 4 Varennes, QCApril 30 - October 8 Fleury, QCMay 9 - September 27 Marieville, QCMay 4 - October 6 Vercheres, QCMay 1 - October 9

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