Frost Dates for Delhi, ON

Based on data from Delhi Cs weather station, 3 miles away

Elevation: 234 m

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. May 9
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 15

30% Probability

Only 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 14
First Fall Frost October 10

Hard Freeze (−2°C)

Last Spring Hard Freeze April 28
First Fall Hard Freeze October 23
42.85°N, 80.50°W © OpenStreetMap

Growing Season

159 Days May 9 to October 15

USDA Hardiness Zone

Hardiness 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: −26 to −23°C

Learn more

Köppen Climate

The 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

Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January-1°-5°-9°
February0°-4°-9°
March5°0°-4°
April13°7°1°
May20°14°7°
June25°19°13°
July28°21°15°
August26°20°14°
September23°17°10°
October15°10°5°
November8°4°0°
December2°-2°-5°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January81
February71
March71
April81
May84
June79
July86
August81
September84
October84
November69
December76

Sunrise / Sunset

Daylight Eastern Time (ET) Longest: 15h 10m · Shortest: 8h 50m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month Sunrise Sunset Daylight
January7:56 AM5:07 PM9h 11m
February7:27 AM5:46 PM10h 19m
March7:42 AM7:21 PM11h 39m
April6:47 AM7:58 PM13h 11m
May6:05 AM8:32 PM14h 27m
June5:48 AM8:57 PM15h 09m
July6:02 AM8:54 PM14h 52m
August6:34 AM8:19 PM13h 45m
September7:08 AM7:25 PM12h 16m
October7:43 AM6:31 PM10h 48m
November7:23 AM4:52 PM9h 30m
December7:52 AM4:44 PM8h 51m

Nearby Stations

Tillsonburg North, ON May 8 - October 11 Foldens, ONMay 2 - October 15 Woodstock, ONMay 8 - October 7 Long Point (Aut), ON April 9 - November 19 Roseville, ONMay 9 - October 9 St Thomas Wpcp, ON May 7 - October 13

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