August Weather in Grantsburg, United States

Last updated: June 24, 2025

In Grantsburg, United States, the average temperature in August is a pleasant 21°C (70°F), with the mercury dipping as low as 10°C (50°F) and soaring up to 32°C (91°F). Expect about 127 mm (5.0 in) of rainfall spread over 12 days, contributing to a cozy average humidity of 81%. Perfect for those who enjoy a warm, tropical ambiance!

August Temperature in Grantsburg

In August in Grantsburg, the average temperature is 21°C (70°F). Maximums can reach 32°C (91°F) and minimums can be as low as 10°C (50°F). This makes it an ideal time for travelers to enjoy mild weather while exploring the beautiful surroundings.

August Weather in Grantsburg: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Grantsburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grantsburg, August typically has an average temperature of 21°C (70°F), with highs reaching up to 32°C (91°F) and lows dropping to around 10°C (50°F).

Data source: Temperature data for Grantsburg generated using information from the Copernicus Climate Change Service.

August Precipitation in Grantsburg

In Grantsburg in August, the precipitation amount is 127 mm (5.0 in) occurring over the course of 12 days.

August Precipitation Trends in Grantsburg

The chart displays monthly precipitation patterns in Grantsburg, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Grantsburg, August typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Grantsburg

In Grantsburg in August, humidity is 81%. With an average temperature of 21°C (70°F), this humidity feels like a warm, sticky embrace, making outdoor activities slightly uncomfortable and necessitating frequent breaks in the shade or air conditioning for a refreshing escape.

August Average Humidity in Grantsburg

This chart illustrates the average monthly humidity levels in Grantsburg, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Grantsburg is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Grantsburg

In Grantsburg in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Grantsburg.

Maximum UV Index Levels in Grantsburg for August

The chart shows the monthly maximum UV Index (UVI) for Grantsburg in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Grantsburg typically reaches 9, which falls under the very high exposure category.

Data source: Grantsburg August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How August Weather in Grantsburg Compares to Other Months

Weather in Grantsburg varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Grantsburg, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Grantsburg, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (15°F)	20 mm (0.8 inches)	87%	low
February Weather	-9°C (16°F)	30 mm (1.2 inches)	90%	moderate
March Weather	0°C (32°F)	47 mm (1.8 inches)	85%	moderate
April Weather	6°C (42°F)	89 mm (3.5 inches)	84%	high
May Weather	14°C (58°F)	104 mm (4.1 inches)	78%	very high
June Weather	21°C (70°F)	80 mm (3.2 inches)	80%	very high
July Weather	23°C (73°F)	100 mm (4.0 inches)	81%	very high
August Weather	21°C (70°F)	127 mm (5.0 inches)	81%	very high
September Weather	17°C (63°F)	96 mm (3.8 inches)	81%	high
October Weather	8°C (47°F)	100 mm (3.9 inches)	84%	moderate
November Weather	0°C (32°F)	38 mm (1.5 inches)	88%	moderate
December Weather	-6°C (22°F)	54 mm (2.1 inches)	84%	low