Waterloo, Indiana Climate

United States

Pop. 2,248 Elev. 278 m / 912 ft TZ: America/Indiana/Indianapolis (UTC-4) ·

Waterloo is largely arid, with warm summers peaking at 85°F (29°C) in July and cold winters around 18°F (-8°C) in January. Humidity pushes the summer feels-like temperature to 93°F (34°C), while wind chill can drive winter lows to 8°F (-13°C). Precipitation occurs on roughly 49 days per year (32.5 in / 826 mm total), with snow on 5 days and 44 in (1112 mm) of annual accumulation. The city averages 113 sunny days per year and around 34 thunderstorm days. Nearby lake water reaches 78°F (25°C) in summer.

Temperature 85°F (29°C) high 18°F (-8°C) low
Feels like 93°F (34°C) high 8°F (-13°C) low
Rain 49 days 32.5 in (826 mm) /yr
Snow 5 days 43.8 in (1112 mm) /yr
Sky 113 sunny 34 stormy
Wind 2.9 mph (1.3 m/s) avg

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Monthly Climate Chart

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

Sky & Air by Month

Cloud cover (%)
72
Jan
76
Feb
60
Mar
65
Apr
66
May
56
Jun
58
Jul
47
Aug
34
Sep
40
Oct
59
Nov
78
Dec
Humidity (%)
69
Jan
70
Feb
61
Mar
60
Apr
69
May
69
Jun
72
Jul
69
Aug
63
Sep
62
Oct
71
Nov
80
Dec

Weather Days by Month

↓ Weather days table

Water Temperatures

↓ Water temperatures table

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Nearby Cities

Nearby

Commercial airport 33 mi Fort Wayne International Airport (FWA)
Ski resort 50 mi Nappanee Sledding Hill
National park 120 mi Fort Harrison State Park
Mountain peak (5,053 ft) 376 mi Grave Mountain
Hospital 4 mi DeKalb Health
Hiking trail 16 mi Muskrat Trail

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 29°F -1°C 18°F -8°C 1.0 in 25 mm 8.6 in219 mm 5
February 35°F 2°C 22°F -6°C 0.4 in 11 mm 12.1 in308 mm 2
March 55°F 13°C 35°F 2°C 4.6 in 117 mm 1.8 in45 mm 7
April 61°F 16°C 42°F 5°C 3.9 in 98 mm 0.2 in6 mm 7
May 68°F 20°C 50°F 10°C 4.8 in 123 mm 7
June 81°F 27°C 64°F 18°C 3.8 in 98 mm 11
July 85°F 29°C 68°F 20°C 5.8 in 149 mm 11
August 80°F 26°C 61°F 16°C 1.6 in 41 mm 14
September 78°F 26°C 55°F 13°C 1.0 in 25 mm 19
October 67°F 19°C 46°F 8°C 2.2 in 57 mm 17
November 48°F 9°C 34°F 1°C 1.2 in 31 mm 12.3 in312 mm 11
December 36°F 2°C 20°F -6°C 2.1 in 53 mm 8.7 in222 mm 2

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 5 1
February 2 0
March 7 6
April 7 4
May 7 5
June 11 5
July 11 7
August 14 1
September 19 0
October 17 3
November 11 0
December 2 2

Water Temperatures Data

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Month Lake Avg High
January 32°F 0°C
February 32°F 0°C
March 41°F 5°C
April 51°F 11°C
May 59°F 15°C
June 72°F 22°C
July 78°F 25°C
August 72°F 22°C
September 67°F 19°C
October 56°F 13°C
November 40°F 5°C
December 32°F 0°C