Frost Dates for New Glasgow, 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 16
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 10

Hard Freeze (−2°C)

Last Spring Hard Freeze April 17
First Fall Hard Freeze November 1
42.52°N, -81.63°W © OpenStreetMap

Growing Season

165 Days May 4 to October 16

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.

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°
-4°
High: -1°C
Avg: -4°C
Low: -7°C
Jan
-3°
High: 0°C
Avg: -3°C
Low: -7°C
Feb
1°
High: 5°C
Avg: 1°C
Low: -3°C
Mar
7°
High: 12°C
Avg: 7°C
Low: 2°C
Apr
13°
High: 18°C
Avg: 13°C
Low: 9°C
May
19°
High: 24°C
Avg: 19°C
Low: 14°C
Jun
21°
High: 26°C
Avg: 21°C
Low: 16°C
Jul
21°
High: 25°C
Avg: 21°C
Low: 16°C
Aug
17°
High: 22°C
Avg: 17°C
Low: 12°C
Sep
11°
High: 15°C
Avg: 11°C
Low: 7°C
Oct
5°
High: 8°C
Avg: 5°C
Low: 1°C
Nov
0°
High: 3°C
Avg: 0°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
74 mm
73.7 mm
Jan
64 mm
63.5 mm
Feb
66 mm
66.0 mm
Mar
94 mm
94.0 mm
Apr
91 mm
91.4 mm
May
81 mm
81.3 mm
Jun
86 mm
86.4 mm
Jul
74 mm
73.7 mm
Aug
74 mm
73.7 mm
Sep
86 mm
86.4 mm
Oct
81 mm
81.3 mm
Nov
71 mm
71.1 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10.5h11.5h13h14.5h15h15h13.5h12.5h11h9.5h9h
Jan: 7:24 AM – 4:36 PM · 9h 13m
Feb: 6:50 AM – 5:10 PM · 10h 20m
Mar: 6:10 AM – 5:50 PM · 11h 39m
Apr: 5:25 AM – 6:35 PM · 13h 10m
May: 4:47 AM – 7:13 PM · 14h 25m
Jun: 4:27 AM – 7:33 PM · 15h 06m
Jul: 4:35 AM – 7:25 PM · 14h 50m
Aug: 5:08 AM – 6:52 PM · 13h 44m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:36 AM – 5:24 PM · 10h 49m
Nov: 7:14 AM – 4:46 PM · 9h 31m
Dec: 7:33 AM – 4:27 PM · 8h 54m
Daylight Longest: 15h 07m · Shortest: 8h 53m

Nearby Stations

Erieau (Aut), ON April 13 - November 11 St Thomas Wpcp, ON May 7 - October 13 Strathroy-Mullifarry, ON May 9 - October 14 Algonac Wwtp, MI May 3 - October 18 Thedford, ONMay 9 - October 15 Port Huron, MI April 19 - November 3

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