Frost Dates for Hemmingford Four Winds, 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 15
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 27
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 20
First Fall Frost September 21

Hard Freeze (−2°C)

Last Spring Hard Freeze April 23
First Fall Hard Freeze October 15
45.07°N, -73.72°W © OpenStreetMap

Growing Season

135 Days May 15 to September 27

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°
-9°
High: -4°C
Avg: -9°C
Low: -14°C
Jan
-8°
High: -3°C
Avg: -8°C
Low: -13°C
Feb
-2°
High: 3°C
Avg: -2°C
Low: -7°C
Mar
6°
High: 12°C
Avg: 6°C
Low: 1°C
Apr
13°
High: 19°C
Avg: 13°C
Low: 7°C
May
18°
High: 24°C
Avg: 18°C
Low: 12°C
Jun
21°
High: 27°C
Avg: 21°C
Low: 15°C
Jul
20°
High: 26°C
Avg: 20°C
Low: 14°C
Aug
15°
High: 21°C
Avg: 15°C
Low: 9°C
Sep
9°
High: 14°C
Avg: 9°C
Low: 4°C
Oct
3°
High: 7°C
Avg: 3°C
Low: -2°C
Nov
-4°
High: 0°C
Avg: -4°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
74 mm
73.7 mm
Jan
46 mm
45.7 mm
Feb
51 mm
50.8 mm
Mar
69 mm
68.6 mm
Apr
97 mm
96.5 mm
May
86 mm
86.4 mm
Jun
109 mm
109.2 mm
Jul
91 mm
91.4 mm
Aug
94 mm
94.0 mm
Sep
99 mm
99.1 mm
Oct
79 mm
78.7 mm
Nov
79 mm
78.7 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h14.5h15.5h15h14h12.5h10.5h9.5h8.5h
Jan: 7:32 AM – 4:28 PM · 8h 56m
Feb: 6:55 AM – 5:05 PM · 10h 10m
Mar: 6:11 AM – 5:49 PM · 11h 37m
Apr: 5:22 AM – 6:38 PM · 13h 17m
May: 4:40 AM – 7:20 PM · 14h 40m
Jun: 4:18 AM – 7:42 PM · 15h 25m
Jul: 4:27 AM – 7:33 PM · 15h 06m
Aug: 5:03 AM – 6:57 PM · 13h 54m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:39 AM – 5:21 PM · 10h 42m
Nov: 7:21 AM – 4:39 PM · 9h 17m
Dec: 7:42 AM – 4:18 PM · 8h 35m
Daylight Longest: 15h 26m · Shortest: 8h 34m

Nearby Stations

Ste-Clothilde, QC May 9 - October 1 Ellenburg Depot, NY May 10 - October 2 Ste Martine, QC April 30 - October 6 St Bernard De Lacolle, QC May 5 - October 8 Ormstown, QCMay 6 - October 6 Chazy, NYApril 30 - October 12

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