Alton, Iowa Climate

United States

Pop. 1,264 Elev. 404 m / 1,326 ft TZ: America/Chicago (UTC-5) ·

Alton has a dry climate with warm summers reaching 84°F (29°C) in July and cold winters averaging 11°F (-12°C) in February. Humidity pushes the summer feels-like temperature to 92°F (33°C), while wind chill can drive winter lows to 1°F (-17°C). Rain falls on about 38 days per year (28.3 in / 720 mm total), with snow on 5 days and 33 in (832 mm) of annual accumulation. The city averages 141 sunny days per year and around 28 thunderstorm days.

Temperature 84°F (29°C) high 11°F (-12°C) low
Feels like 92°F (33°C) high 1°F (-17°C) low
Rain 38 days 28.3 in (720 mm) /yr
Snow 5 days 32.8 in (832 mm) /yr
Sky 141 sunny 28 stormy
Wind 2.9 mph (1.3 m/s) avg

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Monthly Climate Chart

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

Sky & Air by Month

Cloud cover (%)
44
Jan
54
Feb
50
Mar
54
Apr
44
May
53
Jun
51
Jul
46
Aug
45
Sep
46
Oct
58
Nov
72
Dec
Humidity (%)
61
Jan
64
Feb
59
Mar
54
Apr
52
May
68
Jun
78
Jul
77
Aug
68
Sep
60
Oct
66
Nov
79
Dec

Weather Days by Month

↓ Weather days table

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Nearby Cities

Nearby

Commercial airport 45 mi Sioux Gateway Airport / Brigadier General Bud Day Field (SUX)
Ski resort 52 mi Great Bear Recreation Park
National park 51 mi Danish Alps State Recreation Area
Mountain peak (20,733 ft) 297 mi Norris Hill
Hospital 2 mi Orange City Hospital
Hiking trail 41 mi Lake Loop

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 31°F 0°C 11°F -12°C 0.0 in 0 mm 1.4 in36 mm 15
February 30°F -1°C 11°F -12°C 0.0 in 1 mm 3.5 in90 mm 8
March 57°F 14°C 31°F -1°C 2.3 in 59 mm 10.4 in263 mm 15
April 64°F 18°C 39°F 4°C 2.7 in 68 mm 0.2 in6 mm 13
May 73°F 23°C 50°F 10°C 5.4 in 137 mm 15
June 83°F 28°C 62°F 17°C 5.7 in 146 mm 11
July 84°F 29°C 67°F 19°C 6.0 in 153 mm 11
August 80°F 26°C 63°F 17°C 1.7 in 44 mm 11
September 79°F 26°C 57°F 14°C 1.8 in 45 mm 15
October 68°F 20°C 47°F 9°C 1.8 in 45 mm 12
November 48°F 9°C 32°F 0°C 0.7 in 17 mm 8.1 in205 mm 11
December 34°F 1°C 15°F -9°C 0.3 in 6 mm 9.1 in232 mm 4

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 15 0
February 8 0
March 15 3
April 13 3
May 15 3
June 11 8
July 11 7
August 11 1
September 15 2
October 12 1
November 11 0
December 4 0