Frost Dates for Oshawa Wpcp, 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 2
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 17
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 8
First Fall Frost October 12

Hard Freeze (−2°C)

Last Spring Hard Freeze April 12
First Fall Hard Freeze November 3
43.87°N, -78.83°W © OpenStreetMap

Growing Season

168 Days May 2 to October 17

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 6a

Avg. annual minimum: −10 to −5°F (−23 to −21°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° 30°
-5°
High: -1°C
Avg: -5°C
Low: -8°C
Jan
-4°
High: 0°C
Avg: -4°C
Low: -7°C
Feb
1°
High: 5°C
Avg: 1°C
Low: -3°C
Mar
7°
High: 11°C
Avg: 7°C
Low: 2°C
Apr
13°
High: 17°C
Avg: 13°C
Low: 8°C
May
18°
High: 23°C
Avg: 18°C
Low: 13°C
Jun
21°
High: 25°C
Avg: 21°C
Low: 16°C
Jul
20°
High: 25°C
Avg: 20°C
Low: 16°C
Aug
17°
High: 21°C
Avg: 17°C
Low: 12°C
Sep
10°
High: 14°C
Avg: 10°C
Low: 6°C
Oct
4°
High: 8°C
Avg: 4°C
Low: 1°C
Nov
-1°
High: 3°C
Avg: -1°C
Low: -4°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
76 mm
76.2 mm
Jan
61 mm
61.0 mm
Feb
56 mm
55.9 mm
Mar
86 mm
86.4 mm
Apr
86 mm
86.4 mm
May
86 mm
86.4 mm
Jun
84 mm
83.8 mm
Jul
74 mm
73.7 mm
Aug
89 mm
88.9 mm
Sep
76 mm
76.2 mm
Oct
81 mm
81.3 mm
Nov
69 mm
68.6 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10.5h11.5h13h14.5h15.5h15h14h12.5h11h9.5h8.5h
Jan: 7:28 AM – 4:32 PM · 9h 04m
Feb: 6:52 AM – 5:08 PM · 10h 15m
Mar: 6:11 AM – 5:49 PM · 11h 38m
Apr: 5:23 AM – 6:37 PM · 13h 13m
May: 4:44 AM – 7:16 PM · 14h 33m
Jun: 4:22 AM – 7:38 PM · 15h 16m
Jul: 4:31 AM – 7:29 PM · 14h 58m
Aug: 5:05 AM – 6:55 PM · 13h 49m
Sep: 5:51 AM – 6:09 PM · 12h 17m
Oct: 6:37 AM – 5:23 PM · 10h 45m
Nov: 7:18 AM – 4:42 PM · 9h 24m
Dec: 7:38 AM – 4:22 PM · 8h 44m
Daylight Longest: 15h 17m · Shortest: 8h 43m

Nearby Stations

Toronto Buttonville A, ON May 4 - October 12 Richmond Hill, ON May 1 - October 12 Toronto North York, ON May 5 - October 12 Udora, ONMay 15 - October 4 Cobourg Stp, ONMay 4 - October 13 Cobourg (Aut), ON April 27 - October 21

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