Ann Arbor, Michigan, experiences a diverse climate that offers a unique weather pattern throughout the year.
Summers in Ann Arbor are warm and pleasant, with temperatures often reaching into the 80s and low 90s Fahrenheit. This makes it a great time for outdoor activities and exploring the city’s parks and scenic spots.
During the winter months, residents can expect freezing temperatures accompanied by snowfall and windy conditions.
Ann Arbor gets an average of 37.2 inches of precipitation yearly, including significant snowfall during the winter and spring rains in April and May. Despite the cold, winter offers beautiful snowy landscapes and seasonal activities.
With an average annual temperature of 49.1°F, the city’s climate varies significantly across the seasons.
Days that fall below freezing are common, happening around 121.2 times a year.
The city’s weather by month shows noticeable changes, making it interesting to observe the shifting patterns from one season to the next.
Average Temperature in Ann Arbor, Michigan
Ann Arbor experiences varied temperatures throughout the year.
The warm season lasts from late May to mid-September. This period sees average daily high temperatures above 73°F.
July is the hottest month, with highs around 83°F and lows around 63°F.
The cold season spans from late November to early March.
January is the coldest month, with an average low of 23.7°F and an average high of 31°F. During this time, temperatures often fall below freezing.
| Month | Average High (°F) | Average Low (°F) |
|---|---|---|
| January | 31 | 23.7 |
| February | 35 | 25 |
| March | 46 | 34 |
| April | 60 | 42 |
| May | 71 | 52 |
| June | 80 | 61 |
| July | 83 | 63 |
| August | 81 | 62 |
| September | 73 | 55 |
| October | 62 | 44 |
| November | 48 | 36 |
| December | 35 | 25 |
Ann Arbor’s weather can be quite fickle.
Temperatures during transitional months like March and April can vary significantly.
Winter temperatures often bring frost and cold weather.
High temperatures in summer, especially in July, provide a warm respite from the usually cool climate.
Average Precipitation in Ann Arbor, Michigan
Ann Arbor experiences varied precipitation throughout the year, with notable amounts of both rain and snow depending on the season.
Average Rainfall in Ann Arbor, Michigan
Rainfall in Ann Arbor varies significantly throughout the year.
The city receives the most rain between March and July, with amounts ranging from 2.24 inches to 2.4 inches per month. May is typically the wettest month, often receiving over 2.5 inches of rain.
Fall months such as October also see higher rainfall, making it another rainy season. The driest months are usually in winter, with December and January seeing less precipitation.
In total, Ann Arbor receives about 37 inches of rain annually, spread over approximately 144 days. This even distribution keeps the city’s landscape lush and green for most of the year.
Average Snow in Ann Arbor, Michigan
Snowfall is a key aspect of Ann Arbor’s winter climate.
From late November through early March, the city experiences regular snowfall, with January being the snowiest month. Average monthly snowfall in January is around 10 inches.
December and February also see significant snow, with averages around 9 inches per month. In total, the city gets about 59 inches of snow each winter.
Snowy days are common, leading to ice accumulation which can impact daily activities.
By late March, the snow begins to melt, transitioning into the rainier spring season. Snow’s impact is significant, shaping both the daily life and the landscape of Ann Arbor during the winter months.
Average Sun in Ann Arbor, Michigan
Ann Arbor experiences both sunny and cloudy days throughout the year. The amount of sunlight varies widely depending on the season, influencing the daily and monthly solar energy received.
Average Daily Shortwave Solar Energy in Ann Arbor, Michigan
The average daily shortwave solar energy experiences significant variation in different months.
In January, the daily average is about 1.7 kWh per square meter. This increases as the days lengthen, reaching around 6.6 kWh per square meter in June.
Winter months such as December and January have shorter daylight hours, often less than 10 hours. Clear skies are less frequent, and there is limited sunshine.
Conversely, during summer months like June and July, the days are much longer, sometimes peaking at over 15 hours of daylight. Clear skies and long sun hours make these months the sunniest.
For detailed averages, see Monthly Weather Conditions for a breakdown of sun hours and total hours of sunlight throughout the year.
Average Humidity in Ann Arbor, Michigan
Ann Arbor experiences varying levels of humidity throughout the year.
Monthly Relative Humidity:
- January: 74%
- May: 65% (least humid month)
- Annual Average: 71%
The highest humidity is typically seen in January, while May tends to be the least humid month.
Dew Point:
The dew point averages around 40°F, which gives an idea of the moisture content in the air.
Higher dew points can make it feel more humid and uncomfortable, especially during the summer.
Temperature and Humidity:
During the cold season, from late November to early March, the average daily high temperature is below 41°F. This period also sees higher relative humidity.
Conversely, the warm season, from late May to mid-September, has an average daily high temperature above 73°F, with slightly lower humidity levels.
This combination of relative humidity and dew point means that while Ann Arbor can feel very humid in winter, the summer can also be uncomfortable, especially when temperatures rise. Learn more about Ann Arbor’s climate.
Average Wind in Ann Arbor, Michigan
Ann Arbor experiences varying wind speeds throughout the year.
Average wind speeds typically range from 7 to 14 mph. The highest wind speeds occur during the spring months.
Monthly Wind Speeds:
- January: Average wind speed of 10 mph
- March: Often the windiest month at 14 mph
- June: Typically around 9 mph
- September: Wind slows down to about 8 mph
- December: Wind picks up slightly to 11 mph
During winter, wind chills can make temperatures feel much colder.
The wind blows more often from the west and northwest, bringing cold air.
Wind statistics show consistent patterns influenced by seasonal changes.
For those interested in wind-related sports like kitesurfing and windsurfing, Ann Arbor’s spring and early summer months are ideal.
Wind Patterns:
- West/Northwest: Common in winter
- South/Southeast: More frequent in summer
It is crucial to dress appropriately during windy periods, especially in colder months. Windy days combined with low temperatures can lead to frostbite and other health risks.
Average Air Quality in Ann Arbor, Michigan
The air quality in Ann Arbor is usually good, making it a pleasant place to live and visit. According to AccuWeather, the Air Quality Index (AQI) is regularly monitored to help residents be aware of any changes.
Key Air Quality Factors
- AQI Levels: Ann Arbor often experiences AQI levels that fall within the “Good” category. This means that air pollution poses little or no risk.
- Seasonal Changes: Air quality can vary between seasons. In winter, increased heating can lead to higher particulate matter in the air.
Weather Influences
- Temperature: During winter, colder temperatures can lead to more wood burning and car idling, affecting air quality.
- Pressure: High-pressure systems can lead to stagnation, causing pollutants to accumulate. Ann Arbor’s average atmospheric pressure is around 30 inches.
- Wind and Visibility: Winds help disperse pollutants. Visibility often remains clear except during extreme weather events.
Protecting Air Quality
Residents and visitors can check real-time data on air quality through platforms like IQAir. This allows for better planning of outdoor activities especially for sensitive groups.
Reducing car usage and limiting burning activities during low-pressure periods can also help maintain good air quality.
Topography of Ann Arbor, Michigan
Ann Arbor, located in Washtenaw County, has a diverse topography. It is situated in the southeastern part of Michigan.
The city’s latitude is approximately 42.28° N, and longitude is about 83.74° W. These coordinates place Ann Arbor in a humid continental climate zone.
Elevations in Ann Arbor vary. The elevation ranges from about 700 to 1,000 feet above sea level. The lowest areas are found near the Huron River, which flows through the city.
The terrain includes rolling hills, valleys, and plateaus. This varied landscape impacts local weather patterns and contributes to the area’s beauty.
The Huron River is a significant geographical feature. It runs through the city, providing both scenic spots and recreational opportunities.
Ann Arbor’s topography influences its weather. For example, the hills can create microclimates, affecting temperature and rainfall distribution.
Extreme Weather Events that Occur in Ann Arbor, Michigan
Ann Arbor experiences a variety of extreme weather events.
Severe Storms:
Ann Arbor often faces severe storms, especially during spring and summer.
These storms can bring heavy rain, strong winds, and hail.
Storms have caused significant damage to homes and infrastructure.
Tornados:
The city is at risk for tornadoes.
A recent tornado warning indicated a 9% chance for tornado activity, affecting areas including Ann Arbor.
Heavy Rain and Flooding:
Heavy rainfall can lead to flooding.
This is most common in low-lying areas and can disrupt transportation and daily activities.
During summer, Ann Arbor can experience extreme heat.
High temperatures can cause heat-related illnesses and stress on the power grid due to increased use of air conditioning.
Winter Storms:
Winter brings its own challenges with heavy snow and ice.
Snowstorms can lead to dangerous road conditions and power outages.
Residents need to be prepared for extended periods of cold weather, often dropping below freezing.
Best Time of the Year to Visit Ann Arbor, Michigan
Ann Arbor experiences distinct seasons that each offer unique activities and climates.
Visitors should consider what type of weather and events they prefer when planning their trip.
What is Ann Arbor, Michigan Like in Spring
Spring in Ann Arbor, Michigan typically begins in March and lasts through May.
This season sees temperatures ranging from 40°F to 70°F.
As the snow melts, the city gradually becomes greener and flowers start to bloom.
Key events:
- Ann Arbor Film Festival: One of North America’s oldest film festivals, held in March.
- Hash Bash Rally: Celebrated on the first Saturday in April, emphasizing cannabis culture.
Spring can be rainy, with precipitation averaging around 2.8 inches per month.
The blooming landscapes and the moderate temperatures make this period quite pleasant for walking tours and visiting parks.
What is Ann Arbor, Michigan Like in Summer
Summer in Ann Arbor spans from June to August, characterized by warm weather with average high temperatures around 83°F in July.
Summers are ideal for outdoor activities like hiking, kayaking, and attending music festivals.
Key events:
- Ann Arbor Art Fair: A major art event held in July that draws visitors from all over.
- Summer Music Fest: Features free concerts in downtown Ann Arbor.
The city receives about 3 inches of rain per month during summer.
The warm temperatures and vibrant atmosphere offer a perfect setting for enjoying the city’s outdoor attractions.
What is Ann Arbor, Michigan Like in Fall
Autumn in Ann Arbor, often referred to as fall, runs from September to November.
Temperatures start dropping from around 70°F in early fall to 40°F by November.
The changing leaves provide a spectacular display of colors, making it a beautiful time for scenic drives and hikes.
Key events:
- University of Michigan Football Games: A major draw for sports enthusiasts.
- Ann Arbor Oktoberfest: Celebrations with beer, food, and music typically take place in late September.
Rainfall in autumn is moderate, averaging about 2.8 inches per month.
Fall is perfect for enjoying the natural beauty of the area and participating in local events.
What is Ann Arbor, Michigan Like in Winter
Winter in Ann Arbor lasts from December through February, with average temperatures falling to around 30°F and sometimes lower.
Snowfall is common, averaging about 6 to 8 inches per month. This makes it a great time for winter sports and cozying up in local cafes.
Key events:
- Ann Arbor Winter Art Fair: Held in December, showcasing local artists.
- Midwest Open Ice Skating Competition: Attracts ice-skating enthusiasts every January.
Despite the cold, winter activities like ice skating in local rinks and enjoying holiday markets add charm to the season.