Des Moines
Iowa, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Des Moines, IA

A close view of city buildings in Des Moines, Iowa
A close view of city buildings in Des Moines, Iowa
July, like June, in Des Moines, Iowa, is another warm summer month, with average temperature ranging between min 65.5°F (18.6°C) and max 83.1°F (28.4°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 estimated at a hot 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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, wind, differences in body mass, height, and shape), and activity. 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

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

Rainfall

In Des Moines, during July, the rain falls for 12.9 days and regularly aggregates up to 1.5" (38mm) of precipitation. 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 Des Moines, the average length of the day in July is 14.8h.

Sunshine

July has the most sunshine of the year in Des Moines, with an average of 10.3h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the warmest month in Des Moines?

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

What is the temperature in July in Des Moines?

The average high-temperature, in July, in Des Moines, is 83.1°F (28.4°C), while the average low-temperature is 65.5°F (18.6°C). The average heat index (a.k.a. 'feels like', 'real feel'), that takes the relative humidity and factores it into the air temperature reading, in July is appraised at 91.9°F (33.3°C).

What is the average humidity in July in Des Moines?

The average relative humidity in July in Des Moines, Iowa, is 81%.

How much does it rain in Des Moines in July?

In Des Moines, Iowa, during July, the rain falls for 12.9 days and regularly aggregates up to 1.5" (38mm) of precipitation.

When it does not snow in Des Moines?

June through September are months without snowfall in Des Moines, Iowa.

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

In Des Moines, 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?

The average sunshine in July in Des Moines is 10.3h.

What are the months with the highest UV index in Des Moines?

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

What is the UV index intensity in July in Des Moines?

The average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.
Average temperature in July - Des Moines, IA
  • Average high temperature in July: 28.4°C

The warmest month (with the highest average high temperature) is July (28.4°C).
The month with the lowest average high temperature is January (-2.1°C).

  • Average low temperature in July: 18.6°C

The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-9.4°C).

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%).

Average rainfall in July - Des Moines, IA
  • Average rainfall in July: 38mm

The wettest month (with the highest rainfall) is May (70mm).
The driest month (with the lowest rainfall) is January (12mm).

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 lowest number of rainy days is February (3 days).

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

The month with the highest snowfall is January (57mm).
Months with the lowest snowfall are June, July, August and September (0mm).

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 lowest number of snowfall days are June, July, August and September (0 days).

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 shortest days is December (Average daylight: 9.2h).

  • Average sunshine in July: 10.3h

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

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).