July weather forecast
Dubuque, IA

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A small railway line in Dubuque, Iowa, set on a hilly and scenic greenery spot overlooking the brown buildings in the rest of the city
A small railway line in Dubuque, Iowa, set on a hilly and scenic greenery spot overlooking the brown buildings in the rest of the city

Weather in July

Summertime in the city is at its zenith in July, touting the highest average temperature for the year in Dubuque at 79.7°F (26.5°C). While daytime temperatures can be quite high, evenings offer a pleasing respite with cooler temperatures and a gentle breeze. The city is flush with both local and tourists partaking in a plethora of summer activities and festivals. Despite being one of the months with the highest UV index, the generous daylight hours encourage people to make the most of these long summer days. The combination of hot, humid weather and opportunity for various events make July one of the best times to immerse oneself in Dubuque's lively atmosphere.

Temperature

With its high average temperature of 79.7°F (26.5°C) and a low of 62.8°F (17.1°C), July is regarded as the warmest month.

Humidity

In July, the average relative humidity in Dubuque is 84%.

Rainfall

In Dubuque, Iowa, during July, the rain falls for 15 days and regularly aggregates up to 3.27" (83mm) of precipitation. Throughout the year, there are 135.3 rainfall days, and 27.4" (696mm) of precipitation is accumulated.

Snowfall

In Dubuque, snow does not fall in May through September.

Daylight

The average length of the day in July in Dubuque is 14h and 56min.
On the first day of July in Dubuque, sunrise is at 5:29 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:23 pm CDT.

Sunshine

July and August, with an average of 9.7h of sunshine, are months with the most sunshine in Dubuque.

UV index

In Dubuque, the average daily maximum UV index in July is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In July, the average maximum UV index of 5 translates into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Feb 12, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What are the warmest months in Dubuque?

The warmest period in Dubuque is July, when temperatures fluctuate between an average high of 79.7°F (26.5°C) and a low of 62.8°F (17.1°C).

What are July temperatures in Dubuque?

In Dubuque, in July, the average high-temperature is 79.7°F (26.5°C), and the average low-temperature is 62.8°F (17.1°C).

What is the average humidity in July in Dubuque?

In July, the average relative humidity is 84%.

How much does it rain in Dubuque in July?

In Dubuque, Iowa, in July, it is raining for 15 days, with typically 3.27" (83mm) of accumulated precipitation.

When it does not snow in Dubuque?

In Dubuque, snow does not fall in May through September.

How many hours of daylight does Dubuque have in July?

The average day length in July in Dubuque, Iowa, is 14h and 56min.

What time are sunrise and sunset in July in Dubuque?

On the first day of July, sunrise is at 5:29 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:23 pm CDT.

What is the month with the most sunshine in Dubuque?

July and August, with an average of 9.7h of sunshine, are months with the most sunshine in Dubuque, Iowa.

How long on average sun shines in July in Dubuque?

The average sunshine duration in July in Dubuque is 9.7h.

What is the UV index reading in July in Dubuque?

The average daily maximum UV index in July in Dubuque is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Dubuque, IA

Average temperature in July - Dubuque, IA
  • Average high temperature in July: 79.7°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25°F).

  • Average low temperature in July: 62.8°F

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

Average pressure in July
Dubuque, IA

Average pressure in July - Dubuque, IA
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in July
Dubuque, IA

Average wind speed in July - Dubuque, IA
  • Average wind speed in July: 6.8mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in July
Dubuque, IA

Average humidity in July - Dubuque, IA
  • Average humidity in July: 84%

The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is October (76%).

Average rainfall in July
Dubuque, IA

Average rainfall in July - Dubuque, IA
  • Average rainfall in July: 3.27"

The wettest months (with the highest rainfall) are May and June (3.7").
The driest months (with the least rainfall) are January and February (1.14").

Average rainfall days in July
Dubuque, IA

Average rainfall days in July - Dubuque, IA
  • Average rainfall days in July: 15 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.4 days).

Average snowfall in July
Dubuque, IA

Average snowfall in July - Dubuque, IA
  • Average snowfall in July: 0"

The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Dubuque, IA

Average snowfall days in July - Dubuque, IA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Dubuque, IA

Average daylight in July / Average sunshine in July - Dubuque, IA
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in July: 9h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in July
Dubuque, IA

Average sunshine days in July - Dubuque, IA
  • Average sunshine days in July: 13.8 days

The months with the most sunshine days are November and December (17.5 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in July
Dubuque, IA

Average UV index in July - Dubuque, IA
  • Average UV index in July: 5

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in July
Dubuque, IA

Average cloud cover in July - Dubuque, IA
  • Average cloud cover in July: 35

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in July
Dubuque, IA

Average visibility in July - Dubuque, IA
  • Average visibility in July: 5mi

The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).

Dubuque, Iowa, USA

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