Washington, Iowa Climate

United States

Pop. 7,408 Elev. 234 m / 768 ft TZ: America/Chicago (UTC-5) ·

Washington is largely arid, with warm summers peaking at 86°F (30°C) in July and cold winters around 15°F (-9°C) in January. Humidity pushes the summer feels-like temperature to 99°F (37°C), while wind chill can drive winter lows to 6°F (-14°C). Precipitation occurs on roughly 41 days per year (33.4 in / 849 mm total), with snow on 3 days and 30 in (758 mm) of annual accumulation. The city averages 131 sunny days per year and around 31 thunderstorm days. Nearby lake water reaches 81°F (27°C) in summer.

Temperature 86°F (30°C) high 15°F (-10°C) low
Feels like 99°F (37°C) high 6°F (-14°C) low
Rain 41 days 33.4 in (849 mm) /yr
Snow 3 days 29.9 in (758 mm) /yr
Sky 131 sunny 31 stormy
Wind 2.6 mph (1.2 m/s) avg

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Monthly Climate Chart

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

Sky & Air by Month

Cloud cover (%)
47
Jan
57
Feb
49
Mar
66
Apr
53
May
50
Jun
60
Jul
50
Aug
46
Sep
43
Oct
52
Nov
68
Dec
Humidity (%)
61
Jan
64
Feb
55
Mar
59
Apr
56
May
67
Jun
77
Jul
74
Aug
61
Sep
59
Oct
65
Nov
78
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 40 mi The Eastern Iowa Airport (CID)
Ski resort 95 mi Sundown Mountain Resort
National park 121 mi Pikes Peak State Park
Hospital 1 mi Washington County Hospital
Hiking trail 27 mi Woodpecker Trail

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 32°F 0°C 15°F -10°C 1.2 in 29 mm 2.8 in71 mm 12
February 35°F 2°C 18°F -8°C 0.1 in 2 mm 5.3 in134 mm 9
March 60°F 16°C 36°F 2°C 2.8 in 70 mm 4.1 in105 mm 14
April 65°F 19°C 45°F 7°C 5.7 in 145 mm 5
May 74°F 23°C 52°F 11°C 2.5 in 64 mm 12
June 85°F 29°C 66°F 19°C 5.4 in 138 mm 13
July 86°F 30°C 70°F 21°C 7.5 in 189 mm 8
August 82°F 28°C 63°F 17°C 3.3 in 84 mm 13
September 82°F 28°C 58°F 14°C 1.4 in 35 mm 14
October 71°F 22°C 51°F 10°C 1.8 in 46 mm 15
November 53°F 11°C 35°F 2°C 1.0 in 25 mm 10.0 in255 mm 11
December 35°F 2°C 18°F -8°C 0.8 in 20 mm 7.6 in193 mm 5

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 12 1
February 9 0
March 14 2
April 5 3
May 12 2
June 13 6
July 8 7
August 13 4
September 14 1
October 15 3
November 11 2
December 5 0

Water Temperatures Data

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Month Lake Avg High
January 32°F 0°C
February 32°F 0°C
March 38°F 4°C
April 50°F 10°C
May 60°F 16°C
June 72°F 22°C
July 81°F 27°C
August 76°F 24°C
September 68°F 20°C
October 61°F 16°C
November 45°F 7°C
December 33°F 1°C