Genoa, Illinois Climate

United States

Pop. 5,196 Elev. 256 m / 840 ft TZ: America/Chicago (UTC-5) ·

Dry and warm, Genoa sees July highs of 85°F (29°C) and cold January lows of 15°F (-9°C). Humidity pushes the summer feels-like temperature to 94°F (34°C), while wind chill can drive winter lows to 5°F (-15°C). Expect around 46 rainy days annually (32.6 in / 828 mm total), with snow on 5 days and 34 in (865 mm) of annual accumulation. The city averages 116 sunny days per year and around 33 thunderstorm days. Ocean water temperatures reach 74°F (23°C) in summer.

Temperature 85°F (29°C) high 15°F (-10°C) low
Feels like 94°F (34°C) high 5°F (-15°C) low
Rain 46 days 32.6 in (828 mm) /yr
Snow 5 days 34.0 in (865 mm) /yr
Sky 116 sunny 33 stormy
Wind 2.6 mph (1.1 m/s) avg

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Monthly Climate Chart

↓ Monthly data table
Best months to visit: Apr, May, Sep, Oct

Sky & Air by Month

Cloud cover (%)
55
Jan
63
Feb
56
Mar
67
Apr
60
May
53
Jun
61
Jul
51
Aug
35
Sep
46
Oct
57
Nov
76
Dec
Humidity (%)
60
Jan
67
Feb
58
Mar
59
Apr
61
May
64
Jun
73
Jul
74
Aug
67
Sep
67
Oct
66
Nov
76
Dec

Weather Days by Month

↓ Weather days table

Water Temperatures

↓ Water temperatures table

Cities with Similar Climate

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Nearby Cities

Nearby

Commercial airport 22 mi Chicago Rockford International Airport (RFD)
Ski resort 22 mi
National park 62 mi Historic Pullman Foundation Exhibit Hall
Hospital 8 mi Kindred Hospital - Sycamore
Hiking trail 10 mi Nature Loop

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 30°F -1°C 15°F -10°C 1.1 in 29 mm 3.0 in77 mm 13
February 34°F 1°C 17°F -8°C 0.1 in 3 mm 7.8 in199 mm 5
March 56°F 14°C 34°F 1°C 3.4 in 87 mm 5.3 in134 mm 10
April 61°F 16°C 42°F 6°C 3.4 in 87 mm 0.0 in1 mm 4
May 69°F 21°C 50°F 10°C 3.4 in 85 mm 9
June 84°F 29°C 64°F 18°C 4.1 in 103 mm 10
July 85°F 29°C 69°F 20°C 5.1 in 130 mm 6
August 79°F 26°C 62°F 17°C 4.2 in 106 mm 14
September 78°F 25°C 56°F 13°C 3.1 in 78 mm 18
October 66°F 19°C 48°F 9°C 1.7 in 43 mm 13
November 49°F 10°C 35°F 1°C 1.1 in 29 mm 10.3 in261 mm 10
December 33°F 1°C 19°F -7°C 1.9 in 48 mm 7.6 in194 mm 4

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 13 1
February 5 0
March 10 4
April 4 2
May 9 3
June 10 4
July 6 7
August 14 6
September 18 4
October 13 1
November 10 0
December 4 1

Water Temperatures Data

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Month Ocean Avg High Lake Avg High
January 38°F 3°C 32°F 0°C
February 34°F 1°C 32°F 0°C
March 36°F 2°C 36°F 2°C
April 42°F 6°C 46°F 8°C
May 48°F 9°C 55°F 13°C
June 66°F 19°C 67°F 19°C
July 74°F 23°C 76°F 24°C
August 73°F 23°C 73°F 23°C
September 69°F 20°C 65°F 18°C
October 67°F 19°C 59°F 15°C
November 51°F 11°C 43°F 6°C
December 43°F 6°C 32°F 0°C