Our verdict
The best time to visit Ann Arbor is September
In summer, the average maximum temperature is around 27℃ (80℉), but temperatures can sometimes reach as high as 29℃ (84℉) on the hottest days of the year. The weather at night in the winter can get down to temperatures as low as -13℃ (8℉).
The days are longest in Ann Arbor in July, so if you want to see the sights during the day when the sun is up for the longest time, it’s best to visit around that time of year. The wet season in Ann Arbor falls around May, so if you prefer the dryer weather, you should look to visit in December instead.
Below you’ll find loads more detailed information about when to visit Ann Arbor, including a monthly climate breakdown, what to pack, and loads of tools and recommendations to help you find flights and accommodation to suit your budget.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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Ann Arbor seasons
Before you continue, it’s important to know when the seasons are in Ann Arbor as they might be different to yours depending on where in the world you’re travelling from. Ann Arbor is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Ann Arbor
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Ann Arbor for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Ann Arbor climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Ann Arbor for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Ann Arbor in January
- Average temperature: -5℃ (23℉)
- Average high temperature: -2℃ (29℉)
- Average low temperature: -8℃ (18℉)
- Average humidity: 86%
- Average sunny days: 16 days
- Average rainfall: 23mm (1") over 5 days
- Average snow days: 12 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in January, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Ann Arbor in February
- Average temperature: -4℃ (26℉)
- Average high temperature: -0℃ (32℉)
- Average low temperature: -7℃ (19℉)
- Average humidity: 86%
- Average sunny days: 14 days
- Average rainfall: 23mm (1") over 5 days
- Average snow days: 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Ann Arbor in March
- Average temperature: 2℃ (36℉)
- Average high temperature: 6℃ (43℉)
- Average low temperature: -2℃ (28℉)
- Average humidity: 77%
- Average sunny days: 16 days
- Average rainfall: 34mm (1") over 10 days
- Average snow days: 7 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in March, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Ann Arbor in April
- Average temperature: 8℃ (46℉)
- Average high temperature: 13℃ (55℉)
- Average low temperature: 3℃ (38℉)
- Average humidity: 76%
- Average sunny days: 12 days
- Average rainfall: 57mm (2") over 16 days
- Average snow days: 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in April, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Ann Arbor in May
- Average temperature: 15℃ (59℉)
- Average high temperature: 20℃ (68℉)
- Average low temperature: 10℃ (50℉)
- Average humidity: 78%
- Average sunny days: 10 days
- Average rainfall: 61mm (2") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in May, make sure you pack a warm jacket or coat.
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Ann Arbor in June
- Average temperature: 19℃ (67℉)
- Average high temperature: 24℃ (75℉)
- Average low temperature: 14℃ (58℉)
- Average humidity: 80%
- Average sunny days: 12 days
- Average rainfall: 50mm (2") over 15 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in June, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Ann Arbor in July
- Average temperature: 22℃ (71℉)
- Average high temperature: 27℃ (80℉)
- Average low temperature: 17℃ (62℉)
- Average humidity: 79%
- Average sunny days: 11 days
- Average rainfall: 52mm (2") over 16 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in July, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Ann Arbor in August
- Average temperature: 21℃ (69℉)
- Average high temperature: 26℃ (78℉)
- Average low temperature: 16℃ (61℉)
- Average humidity: 79%
- Average sunny days: 12 days
- Average rainfall: 45mm (2") over 15 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in August, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Ann Arbor in September
- Average temperature: 17℃ (63℉)
- Average high temperature: 22℃ (72℉)
- Average low temperature: 13℃ (55℉)
- Average humidity: 78%
- Average sunny days: 15 days
- Average rainfall: 37mm (1") over 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in September, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
Ann Arbor in October
- Average temperature: 11℃ (52℉)
- Average high temperature: 15℃ (59℉)
- Average low temperature: 7℃ (45℉)
- Average humidity: 77%
- Average sunny days: 17 days
- Average rainfall: 33mm (1") over 12 days
- Average snow days: 1 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in October, make sure you pack a warm jacket or coat.
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Ann Arbor in November
- Average temperature: 4℃ (39℉)
- Average high temperature: 8℃ (46℉)
- Average low temperature: 1℃ (33℉)
- Average humidity: 78%
- Average sunny days: 16 days
- Average rainfall: 28mm (1") over 9 days
- Average snow days: 4 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in November, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Ann Arbor in December
- Average temperature: -1℃ (30℉)
- Average high temperature: 1℃ (35℉)
- Average low temperature: -4℃ (26℉)
- Average humidity: 83%
- Average sunny days: 17 days
- Average rainfall: 22mm (1") over 8 days
- Average snow days: 9 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Ann Arbor in December, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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