Grand Rapids
Michigan, USA
Long term weather forecast
Long term weather forecast

August weather forecast and Climate
Grand Rapids, MI

  • Average high temperature in August: 27°C

Warmest month (with highest average high temperature) is July (28.2°C).
Month with lowest average high temperature is January (-0.7°C).

  • Average low temperature in August: 16.1°C

Month with highest average low temperature is July (16.8°C).
Coldest month (with lowest average low temperature) is January (-7.7°C).

  • Average humidity in August: 73.3%

Month with highest relative humidity is December (79.5%).
Month with lowest relative humidity is May (65.4%).

  • Average rainfall in August: 91.2mm

Wettest month (with highest rainfall) is September (108.7mm).
Driest month (with lowest rainfall) is February (45.5mm).

  • Average rainfall days in August: 9.6 days

Months with highest number of rainy days are January and December (16 days).
Month with lowest number of rainy days is August (9.6 days).

  • Average snowfall in August: 0mm

Month with highest snowfall is December (556.3mm).
Months with lowest snowfall are May, June, July, August and September (0mm).

  • Average snowfall days in August: 0 days

Month with highest number of snowfall days is January (14.9 days).
Months with lowest number of snowfall days are June, July, August and September (0 days).

  • Average sunshine in August: 8.5h

Months with most sunshine are June and July (Average sunshine: 9.6h).
Month with least sunshine is December (Average sunshine: 2h).