Grand Marais Weather in August

The climate in Grand Marais during August can be summarized as mild and a little damp.

August is in the summer in Grand Marais and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 23°C (74°F), whilst at night 10°C (50°F) is normal.

On average August is the 2nd wettest month of the year in Grand Marais with around 94mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.9 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Grand Marais in August 2024.