Frost Dates for Pembroke, Canada

Based on data from Petawawa Hoffman 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 13
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 1
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 17
First Fall Frost September 26

Hard Freeze (−2°C)

Last Spring Hard Freeze May 1
First Fall Hard Freeze October 19
45.82°N, -77.12°W © OpenStreetMap

Growing Season

141 Days May 13 to October 1

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°
-11°
High: -6°C
Avg: -11°C
Low: -16°C
Jan
-9°
High: -4°C
Avg: -9°C
Low: -15°C
Feb
-3°
High: 3°C
Avg: -3°C
Low: -8°C
Mar
5°
High: 11°C
Avg: 5°C
Low: -1°C
Apr
13°
High: 20°C
Avg: 13°C
Low: 6°C
May
18°
High: 25°C
Avg: 18°C
Low: 12°C
Jun
21°
High: 27°C
Avg: 21°C
Low: 15°C
Jul
19°
High: 26°C
Avg: 19°C
Low: 13°C
Aug
15°
High: 21°C
Avg: 15°C
Low: 9°C
Sep
8°
High: 12°C
Avg: 8°C
Low: 3°C
Oct
1°
High: 5°C
Avg: 1°C
Low: -3°C
Nov
-7°
High: -3°C
Avg: -7°C
Low: -10°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
69 mm
68.6 mm
Jan
53 mm
53.3 mm
Feb
58 mm
58.4 mm
Mar
74 mm
73.7 mm
Apr
81 mm
81.3 mm
May
102 mm
101.6 mm
Jun
94 mm
94.0 mm
Jul
91 mm
91.4 mm
Aug
84 mm
83.8 mm
Sep
81 mm
81.3 mm
Oct
86 mm
86.4 mm
Nov
76 mm
76.2 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h14.5h15.5h15h14h12.5h10.5h9h8.5h
Jan: 7:35 AM – 4:25 PM · 8h 51m
Feb: 6:56 AM – 5:04 PM · 10h 07m
Mar: 6:12 AM – 5:48 PM · 11h 37m
Apr: 5:21 AM – 6:39 PM · 13h 19m
May: 4:38 AM – 7:22 PM · 14h 44m
Jun: 4:14 AM – 7:46 PM · 15h 31m
Jul: 4:24 AM – 7:36 PM · 15h 12m
Aug: 5:01 AM – 6:59 PM · 13h 57m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:40 AM – 5:20 PM · 10h 40m
Nov: 7:24 AM – 4:36 PM · 9h 12m
Dec: 7:46 AM – 4:14 PM · 8h 29m
Daylight Longest: 15h 33m · Shortest: 8h 27m

Nearby Stations

Sheenboro, Canada May 26 - September 24 Chalk River Aecl, Canada May 14 - October 5 Rapide Des Joachims, Canada May 16 - October 1 Charteris, Canada May 22 - September 19 Shawville, Canada May 18 - September 27 Wright, Canada May 23 - September 22

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