September weather forecast and climate
Ann Arbor, MI

What is the temperature in September in Ann Arbor?

The average high-temperature, in September, in Ann Arbor, is 74.1°F (23.4°C), while the average low-temperature is 53.4°F (11.9°C).

How many days does it rain in September in Ann Arbor?

In September, in Ann Arbor, the rain falls for 10.7 days. Throughout September, 3.4" (87.6mm) of precipitation is accumulated.

Does it snow in Ann Arbor in September?

In Ann Arbor, in September, it doesn't snow. In October, it regularly snows.
Average temperature in September - Ann Arbor, MI
  • Average high temperature in September: 74.2°F

The warmest month (with the highest average high temperature) is July (83.2°F).
The month with the lowest average high temperature is January (31.2°F).

  • Average low temperature in September: 53.4°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (17.9°F).

Average rainfall in September - Ann Arbor, MI
  • Average rainfall in September: 3.5"

Wettest months (with the highest rainfall) are June and August (3.7").
The driest month (with the lowest rainfall) is February (2.4").

Average rainfall days in September - Ann Arbor, MI
  • Average rainfall days in September: 10.7 days

The month with the highest number of rainy days is January (17.1 days).
The month with the lowest number of rainy days is September (10.7 days).

Average snowfall in September - Ann Arbor, MI
  • Average snowfall in September: 0"

The month with the highest snowfall is January (16.8").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in September - Ann Arbor, MI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (14.7 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight in September - Ann Arbor, MI
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.1h).

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