Frost Dates for Harrow Cda Auto, 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. April 26
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 26
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 3
First Fall Frost October 20

Hard Freeze (−2°C)

Last Spring Hard Freeze April 10
First Fall Hard Freeze November 6
42.03°N, -82.90°W © OpenStreetMap

Growing Season

183 Days April 26 to October 26

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 6b

Avg. annual minimum: −5 to 0°F (−21 to −18°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Dfa Hot-Summer Continental

Hot summers and cold winters with year-round precipitation. Moderate growing season supports warm-season crops like tomatoes, peppers, and corn. Winter protection extends the harvest.

Köppen climate map

Temperature

-10° 0° 10° 20° 30°
-3°
High: 0°C
Avg: -3°C
Low: -7°C
Jan
-3°
High: 1°C
Avg: -3°C
Low: -6°C
Feb
2°
High: 6°C
Avg: 2°C
Low: -2°C
Mar
8°
High: 14°C
Avg: 8°C
Low: 3°C
Apr
15°
High: 20°C
Avg: 15°C
Low: 9°C
May
20°
High: 25°C
Avg: 20°C
Low: 15°C
Jun
23°
High: 28°C
Avg: 23°C
Low: 18°C
Jul
22°
High: 27°C
Avg: 22°C
Low: 17°C
Aug
18°
High: 23°C
Avg: 18°C
Low: 13°C
Sep
11°
High: 16°C
Avg: 11°C
Low: 7°C
Oct
5°
High: 9°C
Avg: 5°C
Low: 1°C
Nov
-1°
High: 2°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
46 mm
45.7 mm
Jan
58 mm
58.4 mm
Feb
71 mm
71.1 mm
Mar
74 mm
73.7 mm
Apr
94 mm
94.0 mm
May
69 mm
68.6 mm
Jun
66 mm
66.0 mm
Jul
74 mm
73.7 mm
Aug
74 mm
73.7 mm
Sep
71 mm
71.1 mm
Oct
71 mm
71.1 mm
Nov
69 mm
68.6 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14.5h15h15h13.5h12.5h11h9.5h9h
Jan: 7:22 AM – 4:38 PM · 9h 16m
Feb: 6:49 AM – 5:11 PM · 10h 22m
Mar: 6:10 AM – 5:50 PM · 11h 40m
Apr: 5:26 AM – 6:34 PM · 13h 09m
May: 4:49 AM – 7:11 PM · 14h 23m
Jun: 4:29 AM – 7:31 PM · 15h 03m
Jul: 4:37 AM – 7:23 PM · 14h 47m
Aug: 5:09 AM – 6:51 PM · 13h 42m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:35 AM – 5:25 PM · 10h 50m
Nov: 7:13 AM – 4:47 PM · 9h 34m
Dec: 7:32 AM – 4:28 PM · 8h 57m
Daylight Longest: 15h 04m · Shortest: 8h 56m

Nearby Stations

Amherstburg, ON April 29 - October 22 Kingsville Moe, ON April 20 - October 29 Windsor A, ON April 16 - November 1 Newport 4sse, MI April 27 - October 22 Windsor Riverside, ON April 23 - October 27 Dearborn #2, MI April 27 - October 25

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