Heritage Lake, Illinois Climate

United States

Pop. 1,520 Elev. 227 m / 745 ft TZ: America/Chicago (UTC-5) ·

Dry and warm, Heritage Lake sees July highs of 87°F (31°C) and cold January lows of 18°F (-8°C). Humidity pushes the summer feels-like temperature to 100°F (38°C), while wind chill can drive winter lows to 9°F (-13°C). Expect around 48 rainy days annually (31.6 in / 802 mm total), with snow on 3 days and 29 in (744 mm) of annual accumulation. The city averages 125 sunny days per year and around 33 thunderstorm days. Nearby lake water reaches 79°F (26°C) in summer.

Temperature 87°F (30°C) high 18°F (-8°C) low
Feels like 100°F (38°C) high 9°F (-13°C) low
Rain 48 days 31.6 in (802 mm) /yr
Snow 3 days 29.3 in (744 mm) /yr
Sky 125 sunny 33 stormy
Wind 2.8 mph (1.3 m/s) avg

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Monthly Climate Chart

↓ Monthly data table
Best months to visit: Mar, Aug, Sep, Oct

Sky & Air by Month

Cloud cover (%)
52
Jan
60
Feb
53
Mar
67
Apr
58
May
54
Jun
67
Jul
51
Aug
35
Sep
44
Oct
51
Nov
70
Dec
Humidity (%)
64
Jan
65
Feb
57
Mar
60
Apr
60
May
70
Jun
76
Jul
74
Aug
60
Sep
60
Oct
66
Nov
78
Dec

Weather Days by Month

↓ Weather days table

Water Temperatures

↓ Water temperatures table

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Nearby Cities

Nearby

Commercial airport 21 mi General Wayne A. Downing Peoria International Airport (PIA)
Ski resort 108 mi
National park 119 mi Historic Pullman Foundation Exhibit Hall
Hospital 10 mi Hopedale Medical Complex
Hiking trail 12 mi Meadow Valley Park

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 32°F 0°C 18°F -8°C 0.4 in 10 mm 6.3 in159 mm 15
February 38°F 3°C 23°F -5°C 0.3 in 6 mm 5.0 in126 mm 8
March 60°F 16°C 38°F 4°C 3.2 in 81 mm 3.0 in76 mm 12
April 66°F 19°C 46°F 8°C 4.1 in 104 mm 0.0 in1 mm 4
May 73°F 23°C 53°F 12°C 3.6 in 91 mm 10
June 84°F 29°C 66°F 19°C 5.1 in 130 mm 9
July 87°F 30°C 71°F 22°C 5.5 in 141 mm 4
August 82°F 28°C 64°F 18°C 2.5 in 64 mm 13
September 82°F 28°C 57°F 14°C 1.1 in 28 mm 19
October 71°F 22°C 50°F 10°C 3.0 in 76 mm 15
November 53°F 12°C 36°F 2°C 1.6 in 42 mm 7.6 in193 mm 10
December 38°F 3°C 21°F -6°C 1.2 in 30 mm 7.5 in189 mm 6

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 15 0
February 8 0
March 12 4
April 4 4
May 10 2
June 9 4
July 4 8
August 13 5
September 19 2
October 15 2
November 10 1
December 6 1

Water Temperatures Data

↑ See chart
Month Lake Avg High
January 32°F 0°C
February 32°F 0°C
March 42°F 6°C
April 53°F 12°C
May 61°F 16°C
June 73°F 23°C
July 79°F 26°C
August 75°F 24°C
September 68°F 20°C
October 59°F 15°C
November 43°F 6°C
December 32°F 0°C