July weather forecast and climate
Des Moines, IA

City buildings in Des Moines, Iowa
City buildings in Des Moines, Iowa

Weather in July

July, the same as June, is another warm summer month in Des Moines, Iowa, with average temperature varying between 83.1°F (28.4°C) and 65.5°F (18.6°C).

Temperature

With an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 65.5°F (18.6°C), July is the warmest month.

Heat index

In July, the average heat index is calculated to a tropical 91.9°F (33.3°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, pregnancy, differences in body mass, height, and shape, and wind affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in Des Moines is 81%.

Rainfall

In Des Moines, during 12.9 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In Des Moines, during the entire year, the rain falls for 114.4 days and collects up to 16.38" (416mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In July, the average length of the day in Des Moines, Iowa, is 14.8h.

Sunshine

With an average of 10.3h of sunshine, July has the most sunshine of the year.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the warmest month in Des Moines?

With an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 65.5°F (18.6°C), July is the warmest month in Des Moines, Iowa.

What is the temperature in July in Des Moines?

In Des Moines, in July, the average high-temperature is 83.1°F (28.4°C), and the average low-temperature is 65.5°F (18.6°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, is calculated to 91.9°F (33.3°C).

What is the average humidity in July in Des Moines?

In Des Moines, the average relative humidity in July is 81%.

How many days does it rain in July in Des Moines?

In Des Moines, Iowa, in July, it is raining for 12.9 days, with typically 1.5" (38mm) of accumulated precipitation.

When it does not snow in Des Moines?

June through September are months without snowfall.

What is the average length of the day in July in Des Moines?

In Des Moines, Iowa, the average length of the day in July is 14.8h.

What month has the most sunshine in Des Moines?

The month with the most sunshine in Des Moines is July, with an average of 10.3h of sunshine.

How long on average sun shines in July in Des Moines?

In Des Moines, the average sunshine in July is 10.3h.

What is the month with the highest UV index in Des Moines?

Months with the highest UV index are June through August, with an average maximum UV index of 6.

How high is the UV index in July in Des Moines?

In Des Moines, Iowa, the average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.

Average temperature in July
Des Moines, IA

Average temperature in July - Des Moines, IA
  • Average high temperature in July: 83.1°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in July: 65.5°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

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Average pressure in July
Des Moines, IA

Average pressure in July - Des Moines, IA
  • Average pressure in July: 29.96"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in July
Des Moines, IA

Average wind speed in July - Des Moines, IA
  • Average wind speed in July: 7mph

The windiest months (with the highest average wind speed) are January, February, March and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

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Average humidity in July
Des Moines, IA

Average humidity in July - Des Moines, IA
  • Average humidity in July: 81%

Months with the highest relative humidity are January and June (82%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in July
Des Moines, IA

Average rainfall in July - Des Moines, IA
  • Average rainfall in July: 1.5"

The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in July
Des Moines, IA

Average rainfall days in July - Des Moines, IA
  • Average rainfall days in July: 12.9 days

The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (3 days).

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Average snowfall in July
Des Moines, IA

Average snowfall in July - Des Moines, IA
  • Average snowfall in July: 0"

The month with the highest snowfall is January (2.24").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Des Moines, IA

Average snowfall days in July - Des Moines, IA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (8.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Des Moines, IA

Average daylight in July / Average sunshine in July - Des Moines, IA
  • Average daylight in July: 14.8h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in July: 10.3h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is January (Average sunshine: 4.3h).

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Average sunshine days in July
Des Moines, IA

Average sunshine days in July - Des Moines, IA
  • Average sunshine days in July: 15.5 days

The month with the most sunshine days is December (22.3 days).
The month with the least sunshine days is June (12.2 days).

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Average UV index in July
Des Moines, IA

Average UV index in July - Des Moines, IA
  • Average UV index in July: 6

Months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in July
Des Moines, IA

Average cloud cover in July - Des Moines, IA
  • Average cloud cover in July: 29

The month with the most cloud cover is January (Cloud cover 54).
Months with the least cloud cover are July and September (Cloud cover 29).

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Average visibility in July
Des Moines, IA

Average visibility in July - Des Moines, IA
  • Average visibility in July: 6mi

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

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