Frost Dates for Markham, IL

Based on data from Park Forest weather station, 7 miles away

Elevation: 620 ft

Frost Dates

Last Spring Frost (50%) April 23

First Fall Frost (50%) October 20

30% Probability

Last Spring Frost April 30

First Fall Frost October 15

Hard Freeze (28°F)

Last Spring Hard Freeze April 12

First Fall Hard Freeze October 30

41.59°N, 87.69°W © OpenStreetMap

Growing Season

180 Days April 23 to October 20

USDA Hardiness Zone

Zone 6a

Avg. annual minimum: −10 to −5°F

Learn more

Köppen Climate

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° 30° 50° 70° 90°

23°

Jan

27°

Feb

37°

Mar

49°

Apr

60°

May

70°

Jun

74°

Jul

72°

Aug

65°

Sep

53°

Oct

40°

Nov

29°

Dec

32°F

28°F

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
January	31°	23°	15°
February	35°	27°	18°
March	46°	37°	28°
April	59°	49°	38°
May	71°	60°	49°
June	80°	70°	59°
July	84°	74°	64°
August	82°	72°	62°
September	76°	65°	55°
October	63°	53°	42°
November	48°	40°	31°
December	36°	29°	22°

Precipitation

0" 2" 4" 6" 7.6"

3.3"

Jan

3.0"

Feb

4.4"

Mar

5.1"

Apr

6.1"

May

7.2"

Jun

7.6"

Jul

6.9"

Aug

5.9"

Sep

5.1"

Oct

4.1"

Nov

3.5"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	3.3
February	3.0
March	4.4
April	5.1
May	6.1
June	7.2
July	7.6
August	6.9
September	5.9
October	5.1
November	4.1
December	3.5

Sunrise / Sunset

Jan: 7:21 AM – 4:40 PM · 9h 19m

Feb: 6:54 AM – 5:17 PM · 10h 24m

Mar: 7:10 AM – 6:50 PM · 11h 40m

Apr: 6:17 AM – 7:25 PM · 13h 07m

May: 5:37 AM – 7:57 PM · 14h 20m

Jun: 5:21 AM – 8:21 PM · 14h 59m

Jul: 5:35 AM – 8:18 PM · 14h 43m

Aug: 6:05 AM – 7:45 PM · 13h 40m

Sep: 6:37 AM – 6:53 PM · 12h 16m

Oct: 7:10 AM – 6:01 PM · 10h 51m

Nov: 6:47 AM – 4:24 PM · 9h 37m

Dec: 7:16 AM – 4:17 PM · 9h 01m

Daylight Central Time (CT) Longest: 15h 01m · Shortest: 8h 60m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month	Sunrise	Sunset	Daylight
January	7:21 AM	4:40 PM	9h 19m
February	6:54 AM	5:17 PM	10h 24m
March	7:10 AM	6:50 PM	11h 40m
April	6:17 AM	7:25 PM	13h 07m
May	5:37 AM	7:57 PM	14h 20m
June	5:21 AM	8:21 PM	14h 59m
July	5:35 AM	8:18 PM	14h 43m
August	6:05 AM	7:45 PM	13h 40m
September	6:37 AM	6:53 PM	12h 16m
October	7:10 AM	6:01 PM	10h 51m
November	6:47 AM	4:24 PM	9h 37m
December	7:16 AM	4:17 PM	9h 01m

Nearby Stations

Chicago Midway AP 3sw, IL April 10 - November 1 Little Red School Hse, IL April 19 - October 22 Chicago Midway AP, IL April 11 - October 31 Lowell, INApril 29 - October 16 Joliet Brandon Rd Dam, IL April 19 - October 25 Romeoville Wfo, IL April 20 - October 22

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