August weather forecastGrand Marais, MN
August weather for Grand Marais, Minnesota: Grand Marais's temperature records reveal August as the warmest month, marked by average highs of 68°F (20°C) and lows of 56.5°F (13.6°C). August in Grand Marais acts as a transition month with a slight dip in temperatures compared to July, but is certainly warmer than September.
August
Weather in August
August in Grand Marais acts as a transition month with a slight dip in temperatures compared to July, but is certainly warmer than September. The city experiences a slight reduction in daylight hours. A noteworthy point is the average high temperature, which falls slightly from 66.6°F (19.2°C) in July to 68°F (20°C) in August. As the days grow mildly cooler, signs of the approaching autumn begin to appear. Despite the impending change, August remains a great month for any outdoor pursuits.Temperature
The average temperatures in Grand Marais reach their apex in August, averaging 68°F (20°C) at the high end and 56.5°F (13.6°C) at the low end.Humidity
The average relative humidity in August is 79%.Rainfall
In Grand Marais, in August, it is raining for 14.6 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, in Grand Marais, there are 134.4 rainfall days, and 21.42" (544mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August in Grand Marais, Minnesota, is 14h and 13min.On the first day of the month, sunrise is at 5:39 am and sunset at 8:35 pm. On the last day of August, in Grand Marais, Minnesota, sunrise is at 6:19 am and sunset at 7:43 pm CDT.
Sunshine
The average sunshine in August is 10.2h.UV index
In Grand Marais, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A maximum UV index of 4 in August translates into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Grand Marais, MN
- Average high temperature in August: 68°F
The warmest month (with the highest average high temperature) is August (68°F).
The month with the lowest average high temperature is January (18.3°F).
- Average low temperature in August: 56.5°F
The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).
Average pressure in August
Grand Marais, MN
- Average pressure in August: 29.92"Hg
The months with the highest atmospheric pressure are February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Grand Marais, MN
- Average wind speed in August: 7.6mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in August
Grand Marais, MN
- Average humidity in August: 79%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (74%).
Average rainfall in August
Grand Marais, MN
- Average rainfall in August: 2.17"
The wettest month (with the highest rainfall) is July (2.36").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in August
Grand Marais, MN
- Average rainfall days in August: 14.6 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in August
Grand Marais, MN
- Average snowfall in August: 0"
The month with the highest snowfall is December (6.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Grand Marais, MN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (18.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Grand Marais, MN
- Average daylight in August: 14h and 12min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in August: 10h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in August
Grand Marais, MN
- Average sunshine days in August: 13.8 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is January (10.3 days).
Average UV index in August
Grand Marais, MN
- Average UV index in August: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in August
Grand Marais, MN
- Average cloud cover in August: 31
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in August
Grand Marais, MN
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
