Washtenaw County, MI Weather


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United States / Michigan / Ann Arbor / Washtenaw County / Cities / Zip Codes

The most pleasant months of the year for Washtenaw County are June, August and September. In Washtenaw County, there are 4 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Washtenaw County with an average high temperature of 82.8°, which ranks it as warmer than most places in Michigan. January is the snowiest month in Washtenaw County with 12.5 inches of snow, and 6 months of the year have significant snowfall. But there some days when the humidity becomes unpleasant, especially in August and July.

Today's Weather - Washtenaw, MI

3 AM PST

Widespread Frost then Sunny

29°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TodayWidespread Frost then Sunny56° / 32°ENE 7 mph
FridayWidespread Frost then Mostly Sunny64° / 52°ESE 8 to 15 mph
SaturdayShowers And Thunderstorms76° / 63°S 18 to 24 mph
SundayChance Showers And Thunderstorms79° / 62°SW 21 mph
MondayShowers And Thunderstorms Likely78° / 54°SSW 15 to 23 mph
TuesdaySlight Chance Showers And Thunderstorms69° / 50°W 12 to 15 mph
WednesdayMostly Sunny then Slight Chance Showers And Thunderstorms75° / 51°WSW 7 to 15 mph

Weather Highlights

Summer High: the July high is around 83 degrees
Winter Low: the January low is 16
Rain: averages 35 inches of rain a year
Snow: averages 43 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Washtenaw County area is 9.2 (10=best), which means it is more comfortable than most places in Michigan.

9.2 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January31° 16°
February35° 18°
March45° 25°
April59° 36°
May70° 46°
June79° 56°
July83° 60°
August81° 59°
September74° 51°
October61° 39°
November48° 31°
December35° 21°
Hot, Freezing, Rainy, Snowy Days: Washtenaw
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January0291410
February026118
March025115
April010121
May01120
June10110
July30100
August10100
September00100
October07110
November017122
December028148

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

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