Ann Arbor (MI) monthly weather averages

  • Average daytime temperature

    The bar chart below shows the average monthly peak daytime temperatures at Ann Arbor

    Ann Arbor average temperature chart
    Average monthly temperatures in Ann Arbor (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C -1.3 0.5 7 14.5 21.2 26.3 28.4 27 23.2 16.3 8.9 1.4
    °F 29.7 32.9 44.6 58 70.2 79.3 83.1 80.6 73.7 61.4 48 34.6

    Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

  • Average rainfall & rainy days

    The graph below shows the average rainfall and number of rainy days per month.

    Average monthly rainfall in Ann Arbor (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 43 44 64 82 73 87 77 85 76 56 70 69
    inches 1.7 1.7 2.5 3.2 2.9 3.4 3 3.3 3 2.2 2.8 2.7
    Rainy days 14 11 13 13 11 11 10 9 10 10 12 15
  • Average daily sunshine

    The bar chart below shows the average daily sunshine hours in Ann Arbor

    Average daily sunshine Ann Arbor
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 4.3 5.4 6.4 7.7 9.4 10.6 10.8 9.5 7.9 6.1 3.8 3.2
  • Day / night temperatures

    The graph below shows the daily range of temperatures for each month.

    Maximum and minimum daily temperatures in Ann Arbor (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C -9.1 -8.1 -2.9 2.9 8.9 14 16.6 15.5 11.8 5.6 0.5 -5.8
    Max °C -1.1 0.7 7.3 14.8 21.6 26.6 28.7 27.3 23.5 16.6 9.1 1.6
    Min °F 15.6 17.4 26.9 37.1 47.9 57.2 61.8 59.9 53.2 42.1 32.9 21.6
    Max °F 22.8 25.3 36 47.8 59.4 68.5 72.7 70.5 63.7 52 40.6 28.2
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Ann Arbor in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 2.6 1.7 1.7 3.6 8 14.4 20.3 22.3 20 14.6 9.2 4.9
    °F 36.7 35 35 38.5 46.4 57.9 68.6 72.2 67.9 58.2 48.6 40.9
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Ann Arbor (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 20 18 19 19 17 15 13 13 14 16 18 19
    mph 12 11 12 12 11 9 8 8 9 10 11 12

    A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

  • Relative humidity

    The graph below shows the average relative humidity.

    Average relative humidity in Ann Arbor
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    76% 74% 71% 66% 66% 68% 70% 74% 75% 73% 76% 78%

Other monthly averages

Ann Arbor weather stats

Ann Arbor weather statistics
Hottest month: July 28.4°C 83.1°F
Driest month: January 43mm 1.7ins
Sunniest month: July 10.8hrs
Coldest month: January -1.3°C 29.7°F
Wettest month: June 87mm 3.4ins
Warmest sea: August 22.3°C 72.1°F
Map showing location of Ann Arbor (42.27756, -83.74088)

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