August Weather in Thief River Falls, United States

Last updated: June 24, 2025

The average temperature in Thief River Falls, United States during August is a pleasant 20°C (68°F). Visitors can expect temperatures to range from a minimum of 6°C (43°F) to a maximum of 35°C (95°F). With an average precipitation amount of 69 mm (2.7 in) spread across 9 days, and an average humidity of 78%, be prepared for a mix of sunny days and light showers!

August Temperature in Thief River Falls

In August in Thief River Falls, the average temperature is 20°C (68°F). Maximums can reach 35°C (95°F), while minimums can drop as low as 6°C (43°F). This makes Thief River Falls an ideal destination for travelers seeking mild weather with a chance for warmer days and cooler nights.

August Weather in Thief River Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Thief River Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thief River Falls, August typically has an average temperature of 20°C (68°F), with highs reaching up to 35°C (95°F) and lows dropping to around 6°C (43°F).

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

August Precipitation in Thief River Falls

In Thief River Falls in August, the precipitation amount is 69 mm (2.7 in) spread over 9 days.

August Precipitation Trends in Thief River Falls

The chart displays monthly precipitation patterns in Thief River Falls, 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 Thief River Falls, August typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 9 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

August Humidity in Thief River Falls

In Thief River Falls in August humidity is 78%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes exploring the sights a bit sticky, so travelers should stay hydrated and take frequent breaks in the shade.

August Average Humidity in Thief River Falls

This chart illustrates the average monthly humidity levels in Thief River Falls, 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 Thief River Falls is approximately 78%, 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 Thief River Falls

In Thief River Falls in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Thief River Falls.

Maximum UV Index Levels in Thief River Falls for August

The chart shows the monthly maximum UV Index (UVI) for Thief River Falls 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 Thief River Falls typically reaches 8, which falls under the very high exposure category.

Data source: Thief River Falls 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 Thief River Falls Compares to Other Months

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

This table compares monthly weather conditions in Thief River Falls, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-13°C (9°F)	19 mm (0.8 inches)	90%	low
February Weather	-14°C (8°F)	22 mm (0.9 inches)	92%	moderate
March Weather	-3°C (27°F)	26 mm (1.0 inches)	85%	moderate
April Weather	3°C (39°F)	43 mm (1.7 inches)	81%	high
May Weather	13°C (55°F)	54 mm (2.1 inches)	75%	very high
June Weather	20°C (68°F)	93 mm (3.7 inches)	79%	very high
July Weather	22°C (71°F)	62 mm (2.4 inches)	76%	very high
August Weather	20°C (68°F)	69 mm (2.7 inches)	78%	very high
September Weather	15°C (59°F)	84 mm (3.3 inches)	77%	high
October Weather	6°C (43°F)	81 mm (3.2 inches)	79%	moderate
November Weather	-3°C (26°F)	29 mm (1.1 inches)	86%	low
December Weather	-9°C (16°F)	38 mm (1.5 inches)	86%	low