April Weather in Duluth, United States

Last updated: June 24, 2025

In Duluth, United States, the average temperature in April is a mild 16°C (62°F), with a minimum dropping to 0°C (33°F) and a maximum reaching up to 29°C (84°F). Expect about 129 mm (5.1 in) of precipitation spread over 9 days, contributing to an average humidity of 81%. Embrace the cozy atmosphere of this month!

April Temperature in Duluth

In April in Duluth, the average temperature is 16°C (62°F). Maximum temperatures can reach 29°C (84°F), while minimums can drop as low as 0°C (33°F). This makes Duluth an ideal destination for travelers seeking a range of weather experiences, from warm days to cooler nights.

April Weather in Duluth: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Duluth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Duluth, April typically has an average temperature of 16°C (62°F), with highs reaching up to 29°C (84°F) and lows dropping to around 0°C (33°F).

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

April Precipitation in Duluth

In Duluth in April, the total precipitation amount is 129 mm (5.1 in) over the course of 9 days.

April Precipitation Trends in Duluth

The chart displays monthly precipitation patterns in Duluth, 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 Duluth, April typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Duluth

In Duluth in April, humidity is 81%. With an average temperature of 16°C (62°F), this humidity feels like a warm embrace that can quickly leave travelers feeling sticky and drained, making outdoor adventures a bit challenging unless they stay properly hydrated and take breaks in the shade.

April Average Humidity in Duluth

This chart illustrates the average monthly humidity levels in Duluth, 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 Duluth 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 Duluth

In Duluth in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Duluth.

Maximum UV Index Levels in Duluth for April

The chart shows the monthly maximum UV Index (UVI) for Duluth 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 Duluth typically reaches 10, which falls under the very high exposure category.

Data source: Duluth 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 Duluth Compares to Other Months

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

This table compares monthly weather conditions in Duluth, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	112 mm (4.4 inches)	86%	moderate
February Weather	10°C (50°F)	160 mm (6.3 inches)	84%	high
March Weather	13°C (56°F)	142 mm (5.6 inches)	83%	very high
April Weather	16°C (62°F)	129 mm (5.1 inches)	81%	very high
May Weather	21°C (71°F)	116 mm (4.6 inches)	81%	extreme
June Weather	24°C (76°F)	134 mm (5.3 inches)	81%	extreme
July Weather	26°C (79°F)	118 mm (4.7 inches)	83%	extreme
August Weather	25°C (78°F)	156 mm (6.1 inches)	81%	very high
September Weather	23°C (74°F)	115 mm (4.5 inches)	82%	very high
October Weather	18°C (65°F)	140 mm (5.5 inches)	78%	very high
November Weather	11°C (52°F)	83 mm (3.3 inches)	86%	high
December Weather	9°C (48°F)	141 mm (5.5 inches)	89%	moderate