Georgetown, Illinois Climate

United States

Pop. 3,493 Elev. 276 m / 906 ft TZ: America/Chicago (UTC-5) ·

Dry and warm, Georgetown sees July highs of 84°F (29°C) and cold January lows of 14°F (-10°C). Humidity pushes the summer feels-like temperature to 93°F (34°C), while wind chill can drive winter lows to 5°F (-15°C). Expect around 40 rainy days annually (29.0 in / 736 mm total), with snow on 5 days and 35 in (879 mm) of annual accumulation. The city averages 120 sunny days per year and around 29 thunderstorm days. Nearby lake water reaches 77°F (25°C) in summer.

Temperature 84°F (29°C) high 14°F (-10°C) low
Feels like 93°F (34°C) high 5°F (-15°C) low
Rain 40 days 29.0 in (736 mm) /yr
Snow 5 days 34.6 in (879 mm) /yr
Sky 120 sunny 29 stormy
Wind 2.3 mph (1.0 m/s) avg

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Monthly Climate Chart

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

Sky & Air by Month

Cloud cover (%)
51
Jan
62
Feb
55
Mar
67
Apr
56
May
53
Jun
59
Jul
53
Aug
41
Sep
45
Oct
56
Nov
76
Dec
Humidity (%)
61
Jan
65
Feb
60
Mar
60
Apr
59
May
66
Jun
75
Jul
74
Aug
67
Sep
65
Oct
67
Nov
77
Dec

Weather Days by Month

↓ Weather days table

Water Temperatures

↓ Water temperatures table

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Nearby Cities

Nearby

Commercial airport 38 mi Chicago Rockford International Airport (RFD)
Ski resort 32 mi Chestnut Mountain Resort
National park 91 mi Pikes Peak State Park
Hospital 14 mi MercyHealth FHN Memorial Hospital
Hiking trail 17 mi Mississippi Palisades State Park Trails south

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 30°F -1°C 14°F -10°C 0.3 in 7 mm 2.0 in50 mm 14
February 33°F 0°C 17°F -8°C 0.2 in 5 mm 7.3 in184 mm 6
March 56°F 13°C 33°F 1°C 3.0 in 76 mm 7.8 in198 mm 10
April 61°F 16°C 42°F 5°C 3.1 in 78 mm 0.0 in1 mm 4
May 71°F 21°C 50°F 10°C 3.2 in 80 mm 12
June 84°F 29°C 64°F 18°C 5.1 in 129 mm 10
July 84°F 29°C 68°F 20°C 5.7 in 144 mm 9
August 80°F 26°C 62°F 17°C 3.5 in 88 mm 13
September 78°F 26°C 56°F 13°C 1.5 in 38 mm 15
October 67°F 19°C 48°F 9°C 1.6 in 41 mm 12
November 49°F 9°C 34°F 1°C 0.8 in 21 mm 10.7 in272 mm 11
December 32°F 0°C 18°F -8°C 1.2 in 30 mm 6.9 in174 mm 4

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 14 0
February 6 0
March 10 3
April 4 2
May 12 1
June 10 6
July 9 7
August 13 5
September 15 3
October 12 1
November 11 0
December 4 1

Water Temperatures Data

↑ See chart
Month Lake Avg High
January 32°F 0°C
February 32°F 0°C
March 38°F 3°C
April 49°F 9°C
May 58°F 15°C
June 70°F 21°C
July 77°F 25°C
August 74°F 23°C
September 67°F 19°C
October 59°F 15°C
November 42°F 6°C
December 32°F 0°C