August weather forecast
Grand Rapids, MN

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Weather in August

The last month of the summer, August, is another warm month in Grand Rapids, Minnesota, with an average temperature fluctuating between 77.2°F (25.1°C) and 55°F (12.8°C).

Temperature

Grand Rapids's weather in August indicates an average high-temperature of a still moderately hot 77.2°F (25.1°C), nearly consistent with the 79.7°F (26.5°C) of July. In Grand Rapids, the August nights descend to a significantly cooler average of 55°F (12.8°C) compared to daytime highs.

Humidity

The average relative humidity in August is 74%.

Rainfall

In Grand Rapids, Minnesota, in August, it is raining for 12.6 days, with typically 1.89" (48mm) of accumulated precipitation. Throughout the year, there are 113.8 rainfall days, and 18.94" (481mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in August is 14h and 11min.
On the first day of the month, sunrise is at 5:53 am and sunset at 8:47 pm. On the last day of August, sunrise is at 6:32 am and sunset at 7:55 pm CDT.

Sunshine

In Grand Rapids, the average sunshine in August is 9.4h.

UV index

In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: In August, the maximum UV index of 5 transforms into these recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Grand Rapids in August?

The average high-temperature and low-temperature during August are 77.2°F (25.1°C) and 55°F (12.8°C) respectively.

What is the average humidity in August in Grand Rapids?

The average relative humidity in August is 74%.

How much does it rain in August?

In Grand Rapids, in August, during 12.6 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Grand Rapids have in August?

In August, the average day length in Grand Rapids is 14h and 11min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 5:53 am and sunset at 8:47 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:55 pm CDT.

How long on average sun shines in August?

The average sunshine duration in August is 9.4h.

What is the UV index reading in August?

In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Grand Rapids, MN

Average temperature in August - Grand Rapids, MN
  • Average high temperature in August: 77.2°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (15.8°F).

  • Average low temperature in August: 55°F

The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (1.4°F).

Average pressure in August
Grand Rapids, MN

Average pressure in August - Grand Rapids, MN
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in August
Grand Rapids, MN

Average wind speed in August - Grand Rapids, MN
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in August
Grand Rapids, MN

Average humidity in August - Grand Rapids, MN
  • Average humidity in August: 74%

The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is May (70%).

Average rainfall in August
Grand Rapids, MN

Average rainfall in August - Grand Rapids, MN
  • Average rainfall in August: 1.89"

The wettest month (with the highest rainfall) is June (2.91").
The driest months (with the least rainfall) are January and February (0.75").

Average rainfall days in August
Grand Rapids, MN

Average rainfall days in August - Grand Rapids, MN
  • Average rainfall days in August: 12.6 days

The month with the highest number of rainy days is June (16.4 days).
The month with the least rainy days is February (2.3 days).

Average snowfall in August
Grand Rapids, MN

Average snowfall in August - Grand Rapids, MN
  • Average snowfall in August: 0"

The month with the highest snowfall is December (7.2").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Grand Rapids, MN

Average snowfall days in August - Grand Rapids, MN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (21.1 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Grand Rapids, MN

Average daylight in August / Average sunshine in August - Grand Rapids, MN
  • Average daylight in August: 14h and 1min

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 36min).

  • Average sunshine in August: 9h and 2min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).

Average sunshine days in August
Grand Rapids, MN

Average sunshine days in August - Grand Rapids, MN
  • Average sunshine days in August: 16.5 days

The months with the most sunshine days are August and September (16.5 days).
The month with the least sunshine days is February (10.1 days).

Average UV index in August
Grand Rapids, MN

Average UV index in August - Grand Rapids, MN
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in August
Grand Rapids, MN

Average cloud cover in August - Grand Rapids, MN
  • Average cloud cover in August: 37

The month with the most cloud cover is January (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 36).

Average visibility in August
Grand Rapids, MN

Average visibility in August - Grand Rapids, MN
  • Average visibility in August: 5mi

The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January, February, March and December (4mi).

Grand Rapids, Minnesota, USA

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