Frost Dates for Port Weller (Aut), 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 8
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. November 19
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 April 14
First Fall Frost November 11

Hard Freeze (−2°C)

Last Spring Hard Freeze March 30
First Fall Hard Freeze November 30
43.25°N, -79.22°W © OpenStreetMap

Growing Season

225 Days April 8 to November 19

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 7a

Avg. annual minimum: 0 to 5°F (−18 to −15°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°
-2°
High: 1°C
Avg: -2°C
Low: -5°C
Jan
-2°
High: 1°C
Avg: -2°C
Low: -5°C
Feb
2°
High: 5°C
Avg: 2°C
Low: -2°C
Mar
7°
High: 10°C
Avg: 7°C
Low: 3°C
Apr
13°
High: 17°C
Avg: 13°C
Low: 9°C
May
19°
High: 23°C
Avg: 19°C
Low: 15°C
Jun
22°
High: 26°C
Avg: 22°C
Low: 19°C
Jul
22°
High: 26°C
Avg: 22°C
Low: 19°C
Aug
19°
High: 22°C
Avg: 19°C
Low: 15°C
Sep
12°
High: 15°C
Avg: 12°C
Low: 9°C
Oct
6°
High: 9°C
Avg: 6°C
Low: 3°C
Nov
1°
High: 3°C
Avg: 1°C
Low: -2°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 20 mm 40 mm 60 mm 80 mm
43 mm
43.2 mm
Jan
25 mm
25.4 mm
Feb
33 mm
33.0 mm
Mar
76 mm
76.2 mm
Apr
69 mm
68.6 mm
May
76 mm
76.2 mm
Jun
64 mm
63.5 mm
Jul
46 mm
45.7 mm
Aug
56 mm
55.9 mm
Sep
56 mm
55.9 mm
Oct
51 mm
50.8 mm
Nov
53 mm
53.3 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10.5h11.5h13h14.5h15h15h14h12.5h11h9.5h9h
Jan: 7:26 AM – 4:34 PM · 9h 08m
Feb: 6:51 AM – 5:09 PM · 10h 17m
Mar: 6:11 AM – 5:49 PM · 11h 39m
Apr: 5:24 AM – 6:36 PM · 13h 12m
May: 4:45 AM – 7:15 PM · 14h 29m
Jun: 4:24 AM – 7:36 PM · 15h 11m
Jul: 4:33 AM – 7:27 PM · 14h 54m
Aug: 5:07 AM – 6:53 PM · 13h 47m
Sep: 5:52 AM – 6:08 PM · 12h 17m
Oct: 6:37 AM – 5:23 PM · 10h 47m
Nov: 7:16 AM – 4:44 PM · 9h 27m
Dec: 7:36 AM – 4:24 PM · 8h 48m
Daylight Longest: 15h 13m · Shortest: 8h 47m

Nearby Stations

Youngstown 2 E, NY April 29 - October 28 Vineland, ONApril 20 - November 2 Ridgeville, ON April 26 - October 27 Niagara Falls, NY April 26 - October 25 Niagara Falls Intl AP, NY May 1 - October 19 Welland, ONMay 6 - October 11

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