April Weather in Thief River Falls, United States

Last updated: June 24, 2025

In April, the average temperature in Thief River Falls, United States hovers around 3°C (39°F), with extremes ranging from a chilly -17°C (1°F) to a warm 22°C (72°F). During this month, you can expect about 43 mm (1.7 in) of precipitation spread over 8 days, contributing to an average humidity of 81%. Stay prepared for variable weather!

April Temperature in Thief River Falls

In April in Thief River Falls, the average temperature is 3°C (39°F), with maximums reaching up to 22°C (72°F) and minimums dropping as low as -17°C (1°F). This makes it essential for travelers to be prepared for a wide range of weather conditions when planning their visit.

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

The chart illustrates April 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, April typically has an average temperature of 3°C (39°F), with highs reaching up to 22°C (72°F) and lows dropping to around -17°C (1°F).

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

April Precipitation in Thief River Falls

In Thief River Falls in April, the total precipitation amount is 43 mm (1.7 in) over the course of 8 days.

April Precipitation Trends in Thief River Falls

The chart displays monthly precipitation patterns in Thief River Falls, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Thief River Falls, April typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Thief River Falls

In Thief River Falls in April, humidity is 81%. With an average temperature of 3°C (39°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and requiring extra layers to stay warm and dry during your travels.

April Average Humidity in Thief River Falls

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

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

April UV Index in Thief River Falls

In Thief River Falls in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Thief River Falls, you can refer to this Hourly UV Index in Thief River Falls.

Maximum UV Index Levels in Thief River Falls for April

The chart shows the monthly maximum UV Index (UVI) for Thief River Falls in April, 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 April, the maximum UV index in Thief River Falls typically reaches 6, which falls under the high exposure category.

Data source: Thief River Falls April 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 April 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 April’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 April’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