Duluth
Minnesota, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Duluth, MN

A dusk view of bright neon lights in Duluth, Minnesota, and a clear view of the lit Aerial Lift Bridge, and two long piers with lighthouses at the ends
A dusk view of bright neon lights in Duluth, Minnesota, and a clear view of the lit Aerial Lift Bridge, and two long piers with lighthouses at the ends
July is a moderately hot summer month in Duluth, Minnesota, with average temperature ranging between max 76.3°F (24.6°C) and min 55.4°F (13°C).

Temperature

The warmest month is July, with an average high-temperature of 76.3°F (24.6°C) and an average low-temperature of 55.4°F (13°C).

Humidity

In Duluth, the average relative humidity is 70.9%.

Rainfall

In Duluth, it is raining for 11.8 days, with typically 3.9" (97.8mm) of accumulated precipitation. Throughout the year, there are 131.4 rainfall days, and 31" (786.3mm) of precipitation is accumulated.

Snowfall

In Duluth, during the entire year, snow aggregates up to 86.1" (2187.1mm).

Ocean temperature

In Duluth, the average seawater temperature is 48.2°F (9°C). Swimming in 48.2°F (9°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in Duluth, Minnesota, is 15.4h.

Sunshine

The month with the most sunshine is July, with an average of 9.9h of sunshine.

UV index

June and July, with an average maximum UV index of 8, are months with the highest UV index. A UV Index estimate of 8 to 10 represents a very high health vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
The daily maximum UV index of 8 in July interpret into the following advice:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the warmest month in Duluth?

The warmest month in Duluth, Minnesota, is July, with an average high-temperature of 76.3°F (24.6°C) and an average low-temperature of 55.4°F (13°C).

What is the temperature in July in Duluth?

In Duluth, in July, the average high-temperature is 76.3°F (24.6°C), and the average low-temperature is 55.4°F (13°C).

What is the average humidity in July in Duluth?

In Duluth, the average relative humidity in July is 70.9%.

How much does it rain in Duluth in July?

In July, in Duluth, the rain falls for 11.8 days. Throughout July, 3.9" (97.8mm) of precipitation is accumulated.

What is the water temperature in July in Duluth?

In Duluth, Minnesota, the average seawater temperature in July is 48.2°F (9°C). Swimming in 48.2°F (9°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in July in Duluth?

The average length of the day in July is 15.4h.

What month has the most sunshine in Duluth?

July has the most sunshine of the year, with an average of 9.9h of sunshine.

How long on average sun shines in July in Duluth?

In July, the average sunshine in Duluth, Minnesota, is 9.9h.

What are the months with the highest UV index in Duluth?

Months with the highest UV index in Duluth, Minnesota, are June and July, with an average maximum UV index of 8.

What is the UV index intensity in July in Duluth?

In Duluth, Minnesota, the average daily maximum UV index in July is 8. A UV Index estimate of 8 to 10 represents a very high health threat from unprotected exposure to the UV radiation.
Average temperature in July - Duluth, MN
  • Average high temperature in July: 76.3°F

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (18.9°F).

  • Average low temperature in July: 55.4°F

The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (1.5°F).

Average humidity in July - Duluth, MN
  • Average humidity in July: 70.9%

The month with the highest relative humidity is December (76.3%).
The month with the lowest relative humidity is May (62.7%).

Average rainfall in July - Duluth, MN
  • Average rainfall in July: 3.9"

The wettest month (with the highest rainfall) is June (4.2").
The driest month (with the lowest rainfall) is February (0.8").

Average rainfall days in July - Duluth, MN
  • Average rainfall days in July: 11.8 days

The month with the highest number of rainy days is June (12.6 days).
The month with the lowest number of rainy days is February (8.5 days).

Average snowfall in July - Duluth, MN
  • Average snowfall in July: 0"

The month with the highest snowfall is January (19.4").
Months with the lowest snowfall are June, July and August (0").

Average snowfall days in July - Duluth, MN
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (12.9 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average sea temperature in July - Duluth, MN
  • Average sea temperature in July: 48°F

The best month for swimming (with the highest average sea temperature) is August (61°F).
Coldest months (with the lowest average sea temperature) are January, February, March and April (36°F).

Average daylight in July / Average sunshine in July - Duluth, MN
  • Average daylight in July: 15.4h

The month with the longest days is June (Average daylight: 15.8h).
The month with shortest days is December (Average daylight: 8.6h).

  • Average sunshine in July: 9.9h

The month with most sunshine is July (Average sunshine: 9.9h).
Months with least sunshine are November and December (Average sunshine: 3.3).

Average UV index in July - Duluth, MN
  • Average UV index in July: 8

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).