Frost Dates for Robinson, IL

Elevation: 163 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. April 13
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 22

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 April 18
First Fall Frost October 16

Hard Freeze (28°F)

Last Spring Hard Freeze April 2
First Fall Hard Freeze October 31
39.01°N, 87.78°W © OpenStreetMap

Growing Season

192 Days April 13 to October 22

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 6b

Avg. annual minimum: −5 to 0°F

Learn more

Köppen Climate

The 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

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January37°29°20°
February42°33°23°
March53°43°33°
April66°54°43°
May76°65°54°
June85°74°63°
July87°77°66°
August86°75°63°
September81°68°56°
October68°56°44°
November54°44°34°
December42°34°25°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January5.9
February5.6
March7.6
April9.3
May7.0
June7.2
July8.1
August7.8
September8.2
October8.1
November7.8
December7.5

Sunrise / Sunset

Daylight Central Time (CT) Longest: 14h 45m · Shortest: 9h 15m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month Sunrise Sunset Daylight
January7:14 AM4:47 PM9h 33m
February6:50 AM5:22 PM10h 32m
March7:10 AM6:52 PM11h 42m
April6:20 AM7:22 PM13h 02m
May5:43 AM7:51 PM14h 08m
June5:30 AM8:13 PM14h 43m
July5:42 AM8:11 PM14h 29m
August6:09 AM7:41 PM13h 32m
September6:38 AM6:53 PM12h 14m
October7:08 AM6:05 PM10h 57m
November6:42 AM4:31 PM9h 49m
December7:09 AM4:25 PM9h 16m

Nearby Stations

Palestine, IL April 12 - October 22 Lawrenceville Intl AP, IL April 8 - October 26 Newton 6 Sse, IL April 13 - October 22 Lawrenceville 2wsw, IL April 12 - October 25 Newton, ILApril 13 - October 22 Casey, ILApril 14 - October 20

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