Frost Dates for L'Islet-sur-Mer, QC

Based on data from Charlevoix (Mrc) weather station, 16 miles away

Elevation: 7 m

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 1
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 7
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 7
First Fall Frost August 29

Hard Freeze (−2°C)

Last Spring Hard Freeze May 16
First Fall Hard Freeze September 27
47.13°N, -70.37°W © OpenStreetMap

Growing Season

98 Days June 1 to September 7

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 4a

Avg. annual minimum: −30 to −25°F (−34 to −32°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°
-14°
High: -9°C
Avg: -14°C
Low: -20°C
Jan
-13°
High: -8°C
Avg: -13°C
Low: -19°C
Feb
-8°
High: -3°C
Avg: -8°C
Low: -14°C
Mar
-1°
High: 4°C
Avg: -1°C
Low: -6°C
Apr
7°
High: 12°C
Avg: 7°C
Low: 1°C
May
12°
High: 18°C
Avg: 12°C
Low: 7°C
Jun
15°
High: 20°C
Avg: 15°C
Low: 10°C
Jul
14°
High: 20°C
Avg: 14°C
Low: 9°C
Aug
10°
High: 15°C
Avg: 10°C
Low: 5°C
Sep
3°
High: 7°C
Avg: 3°C
Low: -1°C
Oct
-3°
High: 0°C
Avg: -3°C
Low: -7°C
Nov
-10°
High: -6°C
Avg: -10°C
Low: -15°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 200 mm
112 mm
111.8 mm
Jan
114 mm
114.3 mm
Feb
124 mm
124.5 mm
Mar
183 mm
182.9 mm
Apr
109 mm
109.2 mm
May
142 mm
142.2 mm
Jun
132 mm
132.1 mm
Jul
132 mm
132.1 mm
Aug
132 mm
132.1 mm
Sep
183 mm
182.9 mm
Oct
137 mm
137.2 mm
Nov
140 mm
139.7 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h15.5h15.5h14h12.5h10.5h9h8.5h
Jan: 7:32 AM – 4:12 PM · 8h 41m
Feb: 6:56 AM – 4:58 PM · 10h 01m
Mar: 7:04 AM – 6:40 PM · 11h 36m
Apr: 6:01 AM – 7:24 PM · 13h 23m
May: 5:12 AM – 8:05 PM · 14h 53m
Jun: 4:51 AM – 8:34 PM · 15h 43m
Jul: 5:07 AM – 8:29 PM · 15h 22m
Aug: 5:45 AM – 7:48 PM · 14h 03m
Sep: 6:27 AM – 6:47 PM · 12h 19m
Oct: 7:10 AM – 5:45 PM · 10h 36m
Nov: 6:56 AM – 3:59 PM · 9h 03m
Dec: 7:30 AM – 3:47 PM · 8h 17m
Daylight Eastern Time (ET) Longest: 15h 44m · Shortest: 8h 16m

Nearby Stations

Cap-Tourmente, QC May 8 - October 8 La Pocatiere, QC May 11 - October 2 Chateau Richer, QC May 15 - October 10 Saint Michel, QC May 11 - October 2 L'Etape, QCJune 15 - August 31 Lauzon, QCMay 16 - September 27

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