Ann Arbor, MI Weather & Climate Normals
Ann Arbor's real weather, in one number
Ann Arbor, MI scores 42/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Ann Arbor's hottest and coldest months
Ann Arbor's hottest month is Jul, averaging 72°F; its coldest is Jan, averaging 24°F, a 47.5°F swing across the year, one of the widest gaps in this dataset.
Ann Arbor's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 32°F | 16°F | 2.84in | 16.6in |
| Feb | 35°F | 16°F | 2.42in | 17.1in |
| Mar | 45°F | 25°F | 2.76in | 7.3in |
| Apr | 58°F | 34°F | 3.34in | 2.4in |
| May | 70°F | 46°F | 3.79in | 0in |
| Jun | 80°F | 56°F | 4.25in | 0in |
| Jul | 84°F | 59°F | 3.85in | 0in |
| Aug | 82°F | 58°F | 3.34in | 0in |
| Sep | 75°F | 50°F | 2.98in | 0in |
| Oct | 62°F | 39°F | 2.93in | 0.1in |
| Nov | 48°F | 30°F | 2.73in | 3.9in |
| Dec | 36°F | 22°F | 2.64in | 11.9in |
May, Jun, Jul, Aug, and Sep are the best time to see Ann Arbor at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Ann Arbor
Ann Arbor averages 37.87in of precipitation a year across roughly 163 days with measurable rain or snow, and 59.3in of snow a year.
Where Ann Arbor ranks
Ann Arbor ranks 4156 of 4876 US cities in this dataset for comfort score, and 129 of 153 within MI. About 122,925 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Ann Arbor Se, MI US, 3.1 miles from Ann Arbor, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station