July weather forecast
Ballwin, MO

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Weather in July

July sees the warmest weather in Ballwin with the highest temperature hitting 88.2°F (31.2°C). Despite the high heat, the city continues to buzz both day and night as locals and tourists alike enjoy the lasting daylight hours. Emphasising sun protection becomes essential, taking into consideration the high UV index. The occurrence of sporadic rainfall doesn't deter the bustling summer spirit.

Temperature

July, with its high-temperature average of 88.2°F (31.2°C) and a low-temperature average of 69.3°F (20.7°C), is the warmest month in Ballwin, Missouri.

Heat index

In July, the heat index is calculated to be an extremely hot 104°F (40°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is found by incorporating humidity levels into the air temperature measurement. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in July is 75%.

Rainfall

In Ballwin, Missouri, in July, during 15.7 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In Ballwin, during the entire year, the rain falls for 134.1 days and collects up to 23.82" (605mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Ballwin, the average length of the day in July is 14h and 33min.
On the first day of July in Ballwin, 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 8:13 pm CDT.

Sunshine

July has the most sunshine of the year, with an average of 10.4h of sunshine.

UV index

With an average maximum UV index of 7, July is the month with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: An average UV index of 7 in July transforms into this advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest in Ballwin?

July tends to be the warmest month in Ballwin, with temperatures averaging a daily high of 88.2°F (31.2°C) and a low of 69.3°F (20.7°C).

How hot does it get in Ballwin in July?

Ballwin in July has an average high-temperature of 88.2°F (31.2°C) and an average low-temperature of 69.3°F (20.7°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is calculated to be 104°F (40°C).

What is the average humidity in July in Ballwin?

In Ballwin, Missouri, the average relative humidity in July is 75%.

How much does it rain in Ballwin in July?

In Ballwin, in July, during 15.7 rainfall days, 2.4" (61mm) of precipitation is typically accumulated.

When it does not snow in Ballwin?

In Ballwin, Missouri, snow does not fall in April through October.

What is the average length of the day in July in Ballwin?

In Ballwin, Missouri, the average day length in July is 14h and 33min.

What time are sunrise and sunset in July in Ballwin?

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 8:13 pm CDT.

What month has the most sunshine in Ballwin?

The month with the most sunshine is July, with an average of 10.4h of sunshine.

How many hours of sunshine does Ballwin have in July?

In July, the average sunshine duration is 10.4h.

What is the month with the highest UV index in Ballwin?

With an average maximum UV index of 7, July is the month with the highest UV index in Ballwin.

What is the UV index intensity in July in Ballwin?

The average daily maximum UV index in July in Ballwin is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unprotected exposure to 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
Ballwin, MO

Average temperature in July - Ballwin, MO
  • Average high temperature in July: 88.2°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (38.5°F).

  • Average low temperature in July: 69.3°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

Average pressure in July
Ballwin, MO

Average pressure in July - Ballwin, 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
Ballwin, MO

Average wind speed in July - Ballwin, MO
  • Average wind speed in July: 5.3mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

Average humidity in July
Ballwin, MO

Average humidity in July - Ballwin, MO
  • Average humidity in July: 75%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Ballwin, MO

Average rainfall in July - Ballwin, MO
  • Average rainfall in July: 2.4"

The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is February (1.1").

Average rainfall days in July
Ballwin, MO

Average rainfall days in July - Ballwin, MO
  • Average rainfall days in July: 15.7 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is December (6.1 days).

Average snowfall in July
Ballwin, MO

Average snowfall in July - Ballwin, MO
  • Average snowfall in July: 0"

The month with the highest snowfall is December (1.3").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in July
Ballwin, MO

Average snowfall days in July - Ballwin, MO
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in July /
Average sunshine in July
Ballwin, MO

Average daylight in July / Average sunshine in July - Ballwin, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in July
Ballwin, MO

Average sunshine days in July - Ballwin, MO
  • Average sunshine days in July: 13 days

The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is May (12.6 days).

Average UV index in July
Ballwin, MO

Average UV index in July - Ballwin, MO
  • Average UV index in July: 7

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in July
Ballwin, MO

Average cloud cover in July - Ballwin, MO
  • Average cloud cover in July: 29

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).

Average visibility in July
Ballwin, MO

Average visibility in July - Ballwin, 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).

Ballwin, Missouri, USA

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