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Washtenaw County Weather

 
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The average temperature of Washtenaw County is 48.32°F, which is higher than the Michigan average temperature of 46.64°F and is much lower than the national average temperature of 54.45°F.

Topics:Heating Cost IndexCooling Cost IndexHistorical TemperatureHistorical PrecipitationHistorical SnowHistorical HumidityHistorical Wind Speed

Historical Weather

Heating Cost Index, #13

Washtenaw County
304.69
Michigan
326.80
U.S.
212.91

Cooling Cost Index, #62

Washtenaw County
29.21
Michigan
20.76
U.S.
139.42

The Heating Cost Index and the Cooling Cost Index are indicators of the relative heating and cooling cost of an area. They were calculated based on the average temperate and duration of the hot and cold days for the area. Please note, the actual heating cost and cooling cost are also dependent on other factors specific to individual residences such as the size of the house, the insulation condition, and the equipment efficiency, etc.

Average Temperature

Annual Average Temperature, #13
Washtenaw County
48.3 °F
Michigan
46.6 °F
U.S.
54.5 °F

Ranks: Average Max. Temperature: #11, Average Min. Temperature: #18

Precipitation

Average Annual Precipitation, #26
Washtenaw County
32.86 inches
Michigan
32.79 inches
U.S.
38.67 inches


Average Number of Days with 0.1 Inch or More Precipitation in a Year (this gives an indication of the number of days in a year that it is useful to have an umbrella), #49
Washtenaw County
70.74 days
Michigan
71.77 days
U.S.
66.51 days


Snow

Average Annual Snowfall, #73
Washtenaw County
36.61 inches
Michigan
60.66 inches
U.S.
23.27 inches


Average Number of Days with 1 Inch or More Snow Depth in a Year, #74
Washtenaw County
53.21 days
Michigan
73.06 days
U.S.
27.17 days


Humidity

Annual Average Humidity, #48
Washtenaw County
73.96%
Michigan
74.78%
U.S.
77.52%


Wind Speed

Annual Average Wind Speed, #51
Washtenaw County
17.75 mph
Michigan
17.50 mph
U.S.
16.93 mph


* The temperature, snow fall, and precipitation information on this page were calculated from the historical data of 18,000+ U.S weather stations for the period of time from 1980 to 2010. The humidity and wind speed information were calculated from data from 15,000 worldwide stations for the period of time from 1980 to 2010.


 
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