Decatur, Wisconsin Climate

United States

Pop. 1,803 Elev. 251 m / 824 ft TZ: America/Chicago (UTC-5) ·

Dry and warm, Decatur sees July highs of 84°F (29°C) and cold January lows of 13°F (-11°C). Humidity pushes the summer feels-like temperature to 91°F (33°C), while wind chill can drive winter lows to 4°F (-16°C). Expect around 45 rainy days annually (29.8 in / 757 mm total), with snow on 5 days and 36 in (914 mm) of annual accumulation. The city averages 113 sunny days per year and around 30 thunderstorm days. Nearby lake water reaches 77°F (25°C) in summer.

Temperature 84°F (29°C) high 13°F (-11°C) low
Feels like 91°F (33°C) high 4°F (-16°C) low
Rain 45 days 29.8 in (757 mm) /yr
Snow 5 days 36.0 in (914 mm) /yr
Sky 113 sunny 30 stormy
Wind 2.4 mph (1.1 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 (%)
52
Jan
63
Feb
57
Mar
65
Apr
57
May
55
Jun
58
Jul
51
Aug
41
Sep
46
Oct
56
Nov
77
Dec
Humidity (%)
59
Jan
62
Feb
57
Mar
59
Apr
59
May
66
Jun
73
Jul
72
Aug
70
Sep
69
Oct
68
Nov
75
Dec

Weather Days by Month

↓ Weather days table

Water Temperatures

↓ Water temperatures table

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Nearby Cities

Nearby

Commercial airport 35 mi Dane County Regional Truax Field (MSN)
Ski resort 32 mi Blackhawk Ski Club
National park 93 mi Pikes Peak State Park
Hospital 11 mi Monroe Clinic Hospital
Hiking trail 7 mi IAT - Albany-Evansville connection

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 29°F -2°C 13°F -11°C 0.0 in 1 mm 1.6 in41 mm 12
February 32°F 0°C 16°F -9°C 0.2 in 6 mm 8.1 in207 mm 6
March 55°F 13°C 33°F 1°C 2.9 in 74 mm 7.9 in201 mm 7
April 60°F 16°C 40°F 5°C 2.5 in 65 mm 0.3 in7 mm 4
May 69°F 21°C 49°F 10°C 3.3 in 85 mm 11
June 82°F 28°C 64°F 18°C 5.4 in 137 mm 9
July 84°F 29°C 68°F 20°C 5.7 in 146 mm 9
August 79°F 26°C 62°F 17°C 4.6 in 118 mm 12
September 76°F 25°C 56°F 13°C 1.8 in 46 mm 15
October 65°F 18°C 47°F 9°C 1.3 in 33 mm 14
November 48°F 9°C 33°F 1°C 0.8 in 20 mm 10.3 in261 mm 10
December 32°F 0°C 17°F -8°C 1.1 in 27 mm 7.8 in198 mm 4

Weather Days by Month

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

Water Temperatures Data

↑ See chart
Month Lake Avg High
January 32°F 0°C
February 32°F 0°C
March 36°F 2°C
April 46°F 8°C
May 56°F 13°C
June 69°F 21°C
July 77°F 25°C
August 72°F 22°C
September 65°F 18°C
October 58°F 14°C
November 42°F 5°C
December 32°F 0°C