July weather forecast
Des Peres, MO

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Weather in July

July is a hot summer month in Des Peres, Missouri, with an average temperature fluctuating between 86.9°F (30.5°C) and 69.1°F (20.6°C).

Temperature

July, recognised by an average high temperature of 86.9°F (30.5°C) and a low of 69.1°F (20.6°C), is Des Peres's warmest month.

Heat index

July's heat index is calculated to be a torrid 100.4°F (38°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In July, the average relative humidity is 76%.

Rainfall

In Des Peres, in July, it is raining for 16.7 days, with typically 3.19" (81mm) of accumulated precipitation. Throughout the year, there are 144.8 rainfall days, and 30.59" (777mm) of precipitation is accumulated.

Snowfall

In Des Peres, snow does not fall in April through October.

Daylight

The average length of the day in July is 14h and 33min.
On the first day of July in Des Peres, sunrise is at 5:41 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:12 pm CDT.

Sunshine

The months with the most sunshine are June and July, with an average of 10.5h of sunshine.

UV index

May 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 threat to health from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 6 in July translates into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Updated: Jun 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months?

In Des Peres, July registers the highest temperatures, averaging 86.9°F (30.5°C) at the peak and 69.1°F (20.6°C) at the lowest.

Is it hot during July?

The high-temperature, in July, in Des Peres, records 86.9°F (30.5°C), while the low-temperature is 69.1°F (20.6°C). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 100.4°F (38°C).

What is the average humidity in July?

In July, the average relative humidity is 76%.

How many days does it rain in July?

In Des Peres, in July, it is raining for 16.7 days, with typically 3.19" (81mm) of accumulated precipitation.

When it does not snow?

In Des Peres, snow does not fall in April through October.

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

In Des Peres, the average day length in July is 14h and 33min.

When are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:41 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:12 pm CDT.

What is the month with the most sunshine in Des Peres?

June and July, with an average of 10.5h of sunshine, are months with the most sunshine.

How long on average sun shines in July?

In July, the average sunshine duration in Des Peres, Missouri, is 10.5h.

What is the month with the highest UV index?

May 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 Peres, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
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
Des Peres, MO

Average temperature in July - Des Peres, MO
  • Average high temperature in July: 86.9°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in July: 69.1°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in July
Des Peres, MO

Average pressure in July - Des Peres, MO
  • Average pressure in July: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in July
Des Peres, MO

Average wind speed in July - Des Peres, MO
  • Average wind speed in July: 5.5mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in July
Des Peres, MO

Average humidity in July - Des Peres, MO
  • Average humidity in July: 76%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (70%).

Average rainfall in July
Des Peres, MO

Average rainfall in July - Des Peres, MO
  • Average rainfall in July: 3.19"

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is February (1.69").

Average rainfall days in July
Des Peres, MO

Average rainfall days in July - Des Peres, MO
  • Average rainfall days in July: 16.7 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.5 days).

Average snowfall in July
Des Peres, MO

Average snowfall in July - Des Peres, MO
  • Average snowfall in July: 0"

The month with the highest snowfall is February (2.6").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in July
Des Peres, MO

Average snowfall days in July - Des Peres, MO
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in July /
Average sunshine in July
Des Peres, MO

Average daylight in July / Average sunshine in July - Des Peres, MO
  • Average daylight in July: 14h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in July: 10h and 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in July
Des Peres, MO

Average sunshine days in July - Des Peres, MO
  • Average sunshine days in July: 11.5 days

The month with the most sunshine days is January (21 days).
The month with the least sunshine days is June (11.2 days).

Average UV index in July
Des Peres, MO

Average UV index in July - Des Peres, MO
  • Average UV index in July: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in July
Des Peres, MO

Average cloud cover in July - Des Peres, MO
  • Average cloud cover in July: 28

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in July
Des Peres, MO

Average visibility in July - Des Peres, MO
  • Average visibility in July: 6mi

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

Des Peres, Missouri, USA

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