Frost Dates for Cobourg Stp, ON

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 4
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 13
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 9
First Fall Frost October 7

Hard Freeze (−2°C)

Last Spring Hard Freeze April 18
First Fall Hard Freeze October 26
43.97°N, -78.18°W © OpenStreetMap

Growing Season

162 Days May 4 to October 13

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 5b

Avg. annual minimum: −15 to −10°F (−26 to −23°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

-10° 0° 10° 20°
-5°
High: -1°C
Avg: -5°C
Low: -9°C
Jan
-4°
High: 0°C
Avg: -4°C
Low: -8°C
Feb
0°
High: 4°C
Avg: 0°C
Low: -4°C
Mar
6°
High: 10°C
Avg: 6°C
Low: 1°C
Apr
12°
High: 17°C
Avg: 12°C
Low: 7°C
May
17°
High: 22°C
Avg: 17°C
Low: 13°C
Jun
20°
High: 25°C
Avg: 20°C
Low: 16°C
Jul
20°
High: 24°C
Avg: 20°C
Low: 15°C
Aug
16°
High: 21°C
Avg: 16°C
Low: 12°C
Sep
9°
High: 14°C
Avg: 9°C
Low: 5°C
Oct
4°
High: 8°C
Avg: 4°C
Low: 0°C
Nov
-2°
High: 2°C
Avg: -2°C
Low: -5°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 30 mm 60 mm 90 mm
74 mm
73.7 mm
Jan
53 mm
53.3 mm
Feb
46 mm
45.7 mm
Mar
79 mm
78.7 mm
Apr
84 mm
83.8 mm
May
94 mm
94.0 mm
Jun
66 mm
66.0 mm
Jul
58 mm
58.4 mm
Aug
81 mm
81.3 mm
Sep
76 mm
76.2 mm
Oct
89 mm
88.9 mm
Nov
66 mm
66.0 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13h14.5h15.5h15h14h12.5h10.5h9.5h8.5h
Jan: 7:28 AM – 4:32 PM · 9h 04m
Feb: 6:53 AM – 5:07 PM · 10h 15m
Mar: 6:11 AM – 5:49 PM · 11h 38m
Apr: 5:23 AM – 6:37 PM · 13h 14m
May: 4:43 AM – 7:17 PM · 14h 33m
Jun: 4:22 AM – 7:38 PM · 15h 17m
Jul: 4:31 AM – 7:29 PM · 14h 59m
Aug: 5:05 AM – 6:55 PM · 13h 50m
Sep: 5:51 AM – 6:09 PM · 12h 17m
Oct: 6:38 AM – 5:22 PM · 10h 45m
Nov: 7:18 AM – 4:42 PM · 9h 23m
Dec: 7:38 AM – 4:22 PM · 8h 43m
Daylight Longest: 15h 18m · Shortest: 8h 42m

Nearby Stations

Cobourg (Aut), ON April 27 - October 21 Wooler, ONMay 6 - September 30 Peterborough Trent U, ON May 10 - October 2 Oshawa Wpcp, ONMay 2 - October 17 Trenton A, ONMay 2 - October 10 Belleville, ON April 25 - October 15

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