July Weather in Duluth, United States

Last updated: June 24, 2025

In July, the average temperature in Duluth, United States is a pleasant 26°C (79°F). However, temperatures can vary significantly, with a minimum of 16°C (62°F) and a maximum of 34°C (94°F). Visitors can expect ample moisture, as the region receives an average precipitation of 118 mm (4.7 in) over 18 days, resulting in a high average humidity of 83%. Embrace the warm, humid atmosphere as you explore!

July Temperature in Duluth

In July in Duluth, the average temperature is 26°C (79°F). Maximums can reach 34°C (94°F), and minimums can be as low as 16°C (62°F). This pleasant climate makes Duluth an ideal destination for travelers seeking warm weather and comfortable conditions.

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

The chart illustrates July 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, July typically has an average temperature of 26°C (79°F), with highs reaching up to 34°C (94°F) and lows dropping to around 16°C (62°F).

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

July Precipitation in Duluth

In Duluth in July, the total precipitation amount is 118 mm (4.7 in), distributed over 18 days.

July Precipitation Trends in Duluth

The chart displays monthly precipitation patterns in Duluth, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Duluth, July typically receives around 118 mm (4.7 inches) of precipitation spread over approximately 18 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Duluth

In Duluth in July, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

July Average Humidity in Duluth

This chart illustrates the average monthly humidity levels in Duluth, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Duluth is approximately 83%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Duluth

In Duluth in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Duluth.

Maximum UV Index Levels in Duluth for July

The chart shows the monthly maximum UV Index (UVI) for Duluth in July, 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 July, the maximum UV index in Duluth typically reaches 11, which falls under the extreme exposure category.

Data source: Duluth July 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 July 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 July’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 July’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