Frost Dates for Round Lake, IL

Based on data from Lake Villa 2ne weather station, 6 miles away

Elevation: 797 ft

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 24
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 23

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 30
First Fall Frost October 17

Hard Freeze (28°F)

Last Spring Hard Freeze April 13
First Fall Hard Freeze November 3
42.35°N, 88.09°W © OpenStreetMap

Growing Season

182 Days April 24 to October 23

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: −15 to −10°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
January30°22°15°
February34°26°18°
March45°36°27°
April57°47°37°
May69°58°48°
June78°68°58°
July82°73°63°
August81°71°62°
September73°64°54°
October60°52°43°
November47°39°31°
December35°28°21°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January2.4
February2.3
March2.9
April4.1
May4.9
June5.2
July4.6
August4.7
September5.0
October4.0
November3.3
December2.1

Sunrise / Sunset

Daylight Central Time (CT) Longest: 15h 07m · Shortest: 8h 53m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month Sunrise Sunset Daylight
January7:25 AM4:38 PM9h 13m
February6:57 AM5:17 PM10h 20m
March7:12 AM6:52 PM11h 39m
April6:18 AM7:27 PM13h 10m
May5:36 AM8:01 PM14h 25m
June5:20 AM8:25 PM15h 06m
July5:33 AM8:22 PM14h 49m
August6:05 AM7:48 PM13h 44m
September6:39 AM6:55 PM12h 16m
October7:13 AM6:02 PM10h 49m
November6:51 AM4:23 PM9h 32m
December7:21 AM4:15 PM8h 54m

Nearby Stations

Antioch, ILApril 23 - October 21 Chicago Waukegan Rgnl AP, IL April 30 - October 21 Paddock Lake, WI April 30 - October 15 Waukegan, ILApril 30 - October 19 Mundelein 4 Wsw, IL April 29 - October 20 Kenosha Rgnl AP, WI April 28 - October 19

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!

Planter app garden planner preview