When to Visit Ann Arbor

Ann Arbor in January means winter in earnest. Highs typically hover around 2°C (35°F) on a reasonable day, with lows that regularly drop to -8°C (17°F) or below. Snow is not just possible but likely. The campus can feel subdued between semesters. The city handles snow efficiently but sidewalks still get icy. Plan your footwear accordingly.

Marginally warmer than January, with highs edging toward 4°C (39°F) and lows around -7°C (20°F). February has a habit of delivering the winter's coldest week without much warning. University life resumes in earnest. There's a quietly productive energy in the coffee shops and libraries.

Spring technically arrives in March but Ann Arbor doesn't always agree. Expect highs around 9°C (49°F) with overnight lows still near or below freezing at -1°C (30°F). The Arboretum starts showing early color toward the end of the month. The mud season on the trails begins.

One of the more variable months, with temperatures swinging between properly cold nights around 5°C (41°F) and spring-like afternoons reaching 16°C (61°F). The university calendar heats up with end-of-year events. Outdoor café seating reappears, though a wool layer is still worth keeping handy.

By mid-May, Ann Arbor settles into something reliably pleasant. Highs around 22°C (72°F) and lows around 11°C (52°F). The Arboretum lilacs bloom and the city's outdoor culture starts in earnest. This is arguably the most underrated month to visit.

Summer arrives properly, with highs around 27°C (81°F) and lows staying comfortable near 16°C (62°F). The restaurant patios fill up. Gallup Park draws joggers and kayakers. Quick afternoon thunderstorms are more likely than prolonged rain.

The warmest month, with highs typically around 29°C (85°F) and overnight lows around 18°C (64°F). The Ann Arbor Art Fair, usually held mid-July, draws large crowds and fills every hotel in the city for several days. Book well ahead or plan around it. Humidity can make afternoons feel heavier than the numbers alone suggest.

Very similar to July, with highs around 28°C (83°F) and lows around 17°C (63°F). The back half of August brings the first hints of the university's return. A shift in the city's energy as students filter back in and the rhythm changes.

Ann Arbor at its most balanced. Highs around 24°C (75°F) and lows easing down to 12°C (54°F). Students are back. Football season starts, which dramatically compresses accommodation availability on game weekends. The leaves begin turning in the Arboretum. A lovely month if you can plan around the game schedule.

The fall color peak usually arrives mid-month, with highs around 17°C (62°F) and cool nights dropping to 6°C (43°F). This is arguably Ann Arbor's most visually appealing month. The university football schedule continues to spike weekend hotel demand through most of it.

The city shifts into its quieter mode. Highs around 9°C (48°F), lows near 1°C (34°F), and the first real threat of early snow. The semester winds toward its end. A low-key holiday energy settles into the downtown streets.

Winter grips Ann Arbor hard. Highs hover around 3°C (37°F). Lows slide to -5°C (23°F). Snow is likely. The city handles it smoothly. Mid-month, semester ends. Downtown quiets between winter holidays and New Year.