Ann Arbor, MI weather and climate in 2025
Day
1 °C
Night
-7 °C
Sea
1 °C
Precipitation
52 mm
in month
Rainy days
10 days
in month
Daylight
10 hours
average
Sunshine
5 hours
average
Humidity
74 %
Day
1 °C
Night
-7 °C
Sea
1 °C
Precipitation
52 mm
in month
Rainy days
10 days
in month
Daylight
10 hours
average
Sunshine
5 hours
average
Humidity
74 %
Overview: Ann Arbor, MI
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Weather overview for Ann Arbor, MI
Weather overview
In Ann Arbor, MI, you'll experience four distinct seasons that showcase a myriad of weather conditions. Winters are brisk with average highs barely climbing above freezing and snowfall is not uncommon, requiring cozy layers and warm boots. As spring emerges, the city thaws, and blossoms can be experienced with a light jacket as daily highs gradually rise. Summer brings warmth and the occasional heat wave, ideal for shorts and t-shirts. Falling leaves and comfortable, crisp air make autumn a transitional period where layering becomes essential once more. Throughout the year, precipitation is fairly spread out with occasional rainy days, so keeping an umbrella handy would be wise.
January weather
January in Ann Arbor greets you with a chill, as daytime temperatures hover around 0 °C (31 °F). The night air bites harder with average lows of -8 °C (17 °F), so dressing in layers with insulated outerwear is a must. The city usually experiences 12 days of wet days, which often means snowfalls, packing the streets with winter's blanket. Snow boots and warm gloves will serve you well in this chilly start to the year.
February weather
As February unfolds, Ann Arbor's weather remains cold with average daytime temperatures just above freezing at 1 °C (34 °F). Light snow continues to dust the city with 10 days of wet days. Bundle up in warm attire, as the nights are still harsh with an average of -7 °C (19 °F). These conditions call for warm drinks and indoor activities, with occasional sunny days teasing the upcoming spring.
March weather
March sees a transition towards spring, with the snow melting and daytime temperatures reaching a more comfortable 7 °C (45 °F). Nights remain cool at an average of -3 °C (26 °F), so while you may shed a layer during the day, you'll still need a coat after dusk. The city averages 12 days of wet days, and the promise of spring brings a mix of rain and remaining snow patches.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.April weather
April in Ann Arbor is the heart of spring, with flowers blooming and trees budding as daytime temperatures climb to 15 °C (58 °F). The average minimum temperature at night is now 3 °C (37 °F), a noticeable shift from the frostier nights of winter. Expect 12 days of wet days this month, often translating to spring showers that nurture the growth around you. A light jacket is usually sufficient, and don't forget those rain boots!
May weather
May welcomes a further rise in temperature, with Ann Arbor experiencing average daytime highs of 21 °C (70 °F). Evening temperatures remain mild at 9 °C (47 °F), making it perfect for late-night walks in a cozy sweater. The city still sees rainy days, counting 12 days of wet days, but the added warmth from the sun contributes to the overall pleasantness of the month. Summertime activities begin to beckon as locals enjoy outdoor dining and picnics in the parks.
June weather
June in Ann Arbor marks the beginning of true summer warmth, with an average high temperature of 26 °C (79 °F) during the day. The nights are comfortably warm at 14 °C (57 °F), making it perfect for those summertime bonfires and evening outings. The city doesn't slow down in terms of precipitation, with 11 days of wet days. The transition from spring showers to summer storms can be vibrant and refreshing, complementing the lush greenery that surrounds you.
July weather
The heat of summer is well-established by July, with average daytime highs peaking at 28 °C (83 °F). Ann Arbor nights are warm at 17 °C (62 °F), supporting an active nightlife and varied evening events under the stars. With 11 days of wet days, spontaneous summer rainstorms bring brief cooling, perfect for garden growth and a break from the sun. Sundresses, shorts, and sandals are the attire of the month, complemented by the occasional umbrella for those unexpected showers.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.August weather
August sees a slight retreat in the thermometer with average high temperatures at 27 °C (80 °F), providing a welcome respite from July's zenith. The nights are also warm, averaging 16 °C (60 °F), and suitable for all those late summer festivities. Ann Arbor enjoys 10 days of wet days, making it a great time for those end-of-summer barbecues, assuming a little flexibility for the weather. Light clothing is still the norm, but keep an eye out for occasional cooler breezes that hint at the approaching fall.
September weather
September brings the onset of autumn to Ann Arbor, with a noticeable dip in temperatures to average highs of 23 °C (73 °F). The night time cools down to an average of 11 °C (52 °F), signaling the time to transition back to light sweaters and jackets. The wet days count slightly decreases to 10 days, reflecting the start of drier fall weather. Fresh beginnings, new school terms, and the gradual change of leaves add layers of charm to this month.
October weather
October's fall foliage is on full display as temperatures continue to cool, reaching average highs of 16 °C (61 °F). Evening chills set in with lows of 5 °C (41 °F), calling for the return of warmer layers and perhaps a thermos of hot cider during a walk among the changing leaves. With a wet day count of 10 days, intermittent rain can add to the fall ambiance, but also means you might need a waterproof layer on hand when venturing out.
November weather
November in Ann Arbor is prelude to winter, as the cold starts to creep in with average daytime highs of 9 °C (47 °F). The nights grow colder, now averaging 0 °C (32 °F), signaling it's time to pull out the winter gear once again. Ann Arbor experiences 11 days of wet days, which might include the first snowflakes of the season, setting the stage for the winter wonderland to come. Even with gloves and a hat, strolls through the crispy air can be refreshing.
December weather
December heralds the return of winter's chill to Ann Arbor, with average daytime highs of only 2 °C (35 °F). As the nights drop to an average low of -5 °C (22 °F), the essence of winter holidays can be felt in the brisk air. Ann Arbor typically has 13 days of wet days, which often bring snow showers and the crisp, clean look of a white December. Preparing for the cold with insulated clothing and waterproof boots will help you enjoy the festive season.
FAQs
How should I dress for the weather in Ann Arbor in January?
Layering is key in January. With average day temperatures just below freezing, you'll need a heavy coat, thermal layers, and accessories like scarves, hats, and gloves to stay warm.
Is February significantly warmer than January in Ann Arbor?
February is slightly warmer than January, but you will still encounter cold conditions with daytime highs averaging around 1 °C (34 °F). Nights remain very cold, so there isn't a significant difference in the overall feel of the weather.
How warm does it get during the day in March in Ann Arbor?
Daytime in Ann Arbor warms up to an average of 7 °C (45 °F) in March. With the sun making more frequent appearances, days can feel pleasantly cool, particularly when you're out enjoying the melting snow and emerging spring flowers.
Can I start wearing spring clothes in Ann Arbor during April?
Definitely! With average daytime temperatures of 15 °C (58 °F) in April, you can embrace lighter layers and spring attire. Just remember to carry a light jacket for the cooler evenings and mornings.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.Is May a good time for outdoor activities in Ann Arbor?
Absolutely! With warm and moderate daytime temperatures averaging 21 °C (70 °F), May is ideal for enjoying a range of outdoor activities in Ann Arbor, from hiking to visiting local parks.
What are the typical day and night temperatures in Ann Arbor during June?
During the day, you can expect lovely warm weather with average high temperatures reaching 26 °C (79 °F), while nights remain comfortable at 14 °C (57 °F)—ideal conditions for enjoying both daytime and nighttime summer activities.
Is July typically the hottest month in Ann Arbor?
Yes, July is often the hottest month in Ann Arbor, with daytime temperatures climbing to an average of 28 °C (83 °F). The city sizzles under the summer sun, so staying hydrated and wearing sun protection is strongly advised.
What's the weather like in Ann Arbor in August?
August in Ann Arbor is warm and mostly pleasant with average highs of 27 °C (80 °F). The heat begins to ease off a bit, making outdoor activities and relaxation an enduring part of summer's appeal.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.What are the average temperatures in Ann Arbor for September?
September's average temperatures are a comfortable 23 °C (73 °F) during the day, giving way to cooler 11 °C (52 °F) nights. Ann Arbor starts to feel the change of seasons with more temperate weather, ideal for enjoying the outdoors or cozying up with a book.
Can you describe the fall weather in Ann Arbor during October?
October exhibits quintessential fall weather, with temperatures during the day averaging 16 °C (61 °F) that are perfect for enjoying the vibrant colors of the leaves. Nights can be brisk at 5 °C (41 °F), so dressing warmly is advisable for those clear, starlit skies.
What kind of temperatures can I expect in Ann Arbor during November?
As November ushers in cooler weather, expect daytime temperatures of 9 °C (47 °F) and near-freezing temperatures at night at around 0 °C (32 °F). Ready your winter attire as these temperatures call for extra layers to keep warm.
How cold does December get in Ann Arbor?
December is quite cold in Ann Arbor with an average high of just 2 °C (35 °F) during the day, plummeting to lows of -5 °C (22 °F) at night. You're going to want to dress warmly, with thick coats, hats, and gloves to withstand the cold.
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.