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 varying between 85.6°F (29.8°C) and 66.7°F (19.3°C).

Temperature

The warmest month is July, with an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 66.7°F (19.3°C).

Heat index

In July, the average heat index is evaluated at a tropical 93.2°F (34°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 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like pregnancy, clothing, differences in body mass, height, and shape, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in July is 67.7%.

Rainfall

In Des Moines, in July, during 10.1 rainfall days, 4.5" (113.5mm) of precipitation is typically accumulated. Throughout the year, there are 113.4 rainfall days, and 36" (914.9mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in July is 14.8h.

Sunshine

July has the most sunshine of the year in Des Moines, Iowa, with an average of 10.9h of sunshine.

UV index

June and July, with an average maximum UV index of 9, are months with the highest UV index. A UV Index reading of 8 to 10 represents a very high health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 9 in July transform into the following instructions:
Take special precautions, as unprotected skin can be damaged and can burn quickly. 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. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.

What is the warmest month in Des Moines?

The warmest month in Des Moines is July, with an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 66.7°F (19.3°C).

What is the temperature in July in Des Moines?

In Des Moines, Iowa, in July, the average high-temperature is 85.6°F (29.8°C), and the average low-temperature is 66.7°F (19.3°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), that combines both air temperature and relative humidity, is estimated at 93.2°F (34°C).

What is the average humidity in July in Des Moines?

In July, the average relative humidity in Des Moines is 67.7%.

How much does it rain in Des Moines in July?

In Des Moines, during July, the rain falls for 10.1 days and regularly aggregates up to 4.5" (113.5mm) of precipitation.

When it does not snow in Des Moines?

In Des Moines, Iowa, snow does not fall in May through September.

How many hours of daylight does Des Moines have in July?

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

What month has the most sunshine in Des Moines?

July has the most sunshine of the year in Des Moines, Iowa, with an average of 10.9h of sunshine.

How many hours of sunshine does Des Moines have in July?

In July, the average sunshine in Des Moines is 10.9h.

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

Months with the highest UV index in Des Moines, Iowa, are June and July, with an average maximum UV index of 9.

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

In July, the average daily maximum UV index is 9. A UV Index value of 8 to 10 symbolizes a very high health threat from the exposure to the Sun's UV radiation.
Average temperature in July - Des Moines, IA
  • Average high temperature in July: 85.7°F

The warmest month (with the highest average high temperature) is July (85.7°F).
The month with the lowest average high temperature is January (31°F).

  • Average low temperature in July: 66.8°F

The month with the highest average low temperature is July (66.8°F).
The coldest month (with the lowest average low temperature) is January (14.3°F).

Average humidity in July - Des Moines, IA
  • Average humidity in July: 67.7%

The month with the highest relative humidity is December (74.6%).
The month with the lowest relative humidity is May (63%).

Average rainfall in July - Des Moines, IA
  • Average rainfall in July: 4.5"

The wettest month (with the highest rainfall) is June (4.9").
The driest month (with the lowest rainfall) is January (1").

Average rainfall days in July - Des Moines, IA
  • Average rainfall days in July: 10.1 days

The month with the highest number of rainy days is May (12.5 days).
The month with the lowest number of rainy days is January (7.5 days).

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

The month with the highest snowfall is December (9").
Months with the lowest snowfall are May, June, July, August and September (0").

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 (6.5 days).
Months with the lowest number of snowfall days are May, 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: 10.9h

The month with most sunshine is July (Average sunshine: 10.9h).
The month with least sunshine is December (Average sunshine: 4.2h).

Average UV index in July - Des Moines, IA
  • Average UV index in July: 9

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 1).