Frost Dates for Blackburn Hamlet, ON

Based on data from Angers weather station, 8 miles away

Elevation: 83 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. May 24
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 22
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 29
First Fall Frost September 18

Hard Freeze (−2°C)

Last Spring Hard Freeze May 9
First Fall Hard Freeze October 4
45.44°N, -75.56°W © OpenStreetMap

Growing Season

121 Days May 24 to September 22

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: -17°C
Jan
-10°
High: -4°C
Avg: -10°C
Low: -16°C
Feb
-3°
High: 2°C
Avg: -3°C
Low: -9°C
Mar
5°
High: 11°C
Avg: 5°C
Low: -1°C
Apr
12°
High: 19°C
Avg: 12°C
Low: 5°C
May
17°
High: 24°C
Avg: 17°C
Low: 11°C
Jun
20°
High: 26°C
Avg: 20°C
Low: 13°C
Jul
19°
High: 25°C
Avg: 19°C
Low: 12°C
Aug
14°
High: 20°C
Avg: 14°C
Low: 8°C
Sep
7°
High: 12°C
Avg: 7°C
Low: 2°C
Oct
1°
High: 5°C
Avg: 1°C
Low: -3°C
Nov
-6°
High: -2°C
Avg: -6°C
Low: -11°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
36 mm
35.6 mm
Feb
53 mm
53.3 mm
Mar
76 mm
76.2 mm
Apr
89 mm
88.9 mm
May
109 mm
109.2 mm
Jun
89 mm
88.9 mm
Jul
107 mm
106.7 mm
Aug
97 mm
96.5 mm
Sep
102 mm
101.6 mm
Oct
79 mm
78.7 mm
Nov
74 mm
73.7 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h14.5h15.5h15h14h12.5h10.5h9h8.5h
Jan: 7:45 AM – 4:38 PM · 8h 53m
Feb: 7:12 AM – 5:21 PM · 10h 09m
Mar: 7:23 AM – 7:00 PM · 11h 37m
Apr: 6:24 AM – 7:41 PM · 13h 18m
May: 5:37 AM – 8:20 PM · 14h 42m
Jun: 5:18 AM – 8:47 PM · 15h 28m
Jul: 5:33 AM – 8:43 PM · 15h 10m
Aug: 6:08 AM – 8:04 PM · 13h 56m
Sep: 6:48 AM – 7:06 PM · 12h 18m
Oct: 7:27 AM – 6:08 PM · 10h 41m
Nov: 7:10 AM – 4:24 PM · 9h 14m
Dec: 7:42 AM – 4:14 PM · 8h 31m
Daylight Eastern Time (ET) Longest: 15h 30m · Shortest: 8h 30m

Nearby Stations

Chelsea, QCMay 8 - October 4 Ottawa Cda, ON April 30 - October 9 Ottawa Cda Rcs, ON May 1 - October 13 Ottawa Macdonald-Cartier Int'L, ON April 29 - October 7 High Falls, QCMay 9 - October 11 Russell, ONMay 6 - October 2

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