Frost Dates for Belleville, 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 25
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 15
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 2
First Fall Frost October 10

Hard Freeze (−2°C)

Last Spring Hard Freeze April 10
First Fall Hard Freeze October 31
44.15°N, -77.40°W © OpenStreetMap

Growing Season

173 Days April 25 to October 15

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

-15° 0° 15° 30°
-6°
High: -2°C
Avg: -6°C
Low: -11°C
Jan
-5°
High: 0°C
Avg: -5°C
Low: -10°C
Feb
0°
High: 4°C
Avg: 0°C
Low: -5°C
Mar
7°
High: 12°C
Avg: 7°C
Low: 2°C
Apr
14°
High: 19°C
Avg: 14°C
Low: 9°C
May
19°
High: 24°C
Avg: 19°C
Low: 14°C
Jun
22°
High: 27°C
Avg: 22°C
Low: 17°C
Jul
21°
High: 26°C
Avg: 21°C
Low: 16°C
Aug
17°
High: 22°C
Avg: 17°C
Low: 12°C
Sep
10°
High: 14°C
Avg: 10°C
Low: 6°C
Oct
4°
High: 7°C
Avg: 4°C
Low: 0°C
Nov
-2°
High: 2°C
Avg: -2°C
Low: -6°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
71 mm
71.1 mm
Jan
51 mm
50.8 mm
Feb
58 mm
58.4 mm
Mar
81 mm
81.3 mm
Apr
74 mm
73.7 mm
May
94 mm
94.0 mm
Jun
74 mm
73.7 mm
Jul
76 mm
76.2 mm
Aug
89 mm
88.9 mm
Sep
86 mm
86.4 mm
Oct
86 mm
86.4 mm
Nov
69 mm
68.6 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13h14.5h15.5h15h14h12.5h10.5h9.5h8.5h
Jan: 7:29 AM – 4:31 PM · 9h 02m
Feb: 6:53 AM – 5:07 PM · 10h 14m
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 34m
Jun: 4:21 AM – 7:39 PM · 15h 18m
Jul: 4:30 AM – 7:30 PM · 15h 00m
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 44m
Nov: 7:19 AM – 4:41 PM · 9h 22m
Dec: 7:39 AM – 4:21 PM · 8h 42m
Daylight Longest: 15h 19m · Shortest: 8h 41m

Nearby Stations

Trenton A, ONMay 2 - October 10 Mountainview, ONMay 1 - October 9 Wooler, ONMay 6 - September 30 Point Petre (Aut), ON April 26 - October 25 Centreville, ONMay 10 - October 3 Hartington Ihd, ON May 5 - October 6

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