July weather forecast and climate
Maryland Heights, MO

July in Maryland Heights, Missouri, is a tropical summer month, with average temperature varying between 68.9°F (20.5°C) and 86.7°F (30.4°C).

Temperature

July is the warmest month, with an average high-temperature of 86.7°F (30.4°C) and an average low-temperature of 68.9°F (20.5°C).

Heat index

The average heat index is calculated to a torrid 99.9°F (37.7°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like wind, metabolic differences, pregnancy, and activity influence one's weather impression. 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in Maryland Heights, Missouri, is 76%.

Rainfall

In July, the rain falls for 16.3 days. Throughout July, 2.87" (73mm) of precipitation is accumulated. In Maryland Heights, during the entire year, the rain falls for 141.9 days and collects up to 27.68" (703mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In July, the average length of the day is 14.6h.

Sunshine

The month with the most sunshine in Maryland Heights is July, with an average of 10.6h of sunshine.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Maryland Heights, Missouri. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the warmest month in Maryland Heights?

The warmest month in Maryland Heights is July, with an average high-temperature of 86.7°F (30.4°C) and an average low-temperature of 68.9°F (20.5°C).

What is the temperature in July in Maryland Heights?

In Maryland Heights, Missouri, in July, the average high-temperature is 86.7°F (30.4°C), and the average low-temperature is 68.9°F (20.5°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), that combines air temperature and relative humidity, in July is calculated to 99.9°F (37.7°C).

What is the average humidity in July in Maryland Heights?

In Maryland Heights, Missouri, the average relative humidity in July is 76%.

How many days does it rain in July in Maryland Heights?

In Maryland Heights, Missouri, during July, the rain falls for 16.3 days and regularly aggregates up to 2.87" (73mm) of precipitation.

When it does not snow in Maryland Heights?

April through October are months without snowfall in Maryland Heights.

How many hours of daylight does Maryland Heights have in July?

In July, the average length of the day in Maryland Heights is 14.6h.

What month has the most sunshine in Maryland Heights?

The month with the most sunshine in Maryland Heights, Missouri, is July, with an average of 10.6h of sunshine.

How long on average sun shines in July in Maryland Heights?

In July, the average sunshine is 10.6h.

What is the month with the highest UV index in Maryland Heights?

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 Maryland Heights?

In July, the average daily maximum UV index in Maryland Heights, Missouri, is 6. A UV Index estimate of 6 to 7 represents a high health threat from the exposure to the Sun's UV rays.
Average temperature in July - Maryland Heights, MO
  • Average high temperature in July: 30.4°C

The warmest month (with the highest average high temperature) is July (30.4°C).
The month with the lowest average high temperature is January (2.9°C).

  • Average low temperature in July: 20.5°C

The month with the highest average low temperature is July (20.5°C).
The coldest month (with the lowest average low temperature) is January (-4.3°C).

Average pressure in July - Maryland Heights, MO
  • Average pressure in July: 1014.8mbar

The month with the highest atmospheric pressure is January (1021.2mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).

Average wind speed in July - Maryland Heights, MO
  • Average wind speed in July: 9km/h

The windiest month (with the highest average wind speed) is January (14.9km/h).
The calmest months (with the lowest average wind speed) are July and August (9km/h).

Average humidity in July - Maryland Heights, MO
  • Average humidity in July: 76%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is October (70%).

Average rainfall in July - Maryland Heights, MO
  • Average rainfall in July: 73mm

The wettest month (with the highest rainfall) is May (84mm).
The driest month (with the least rainfall) is February (36mm).

Average rainfall days in July - Maryland Heights, MO
  • Average rainfall days in July: 16.3 days

The month with the highest number of rainy days is July (16.3 days).
Months with the least rainy days are February and December (7.3 days).

Average snowfall in July - Maryland Heights, MO
  • Average snowfall in July: 0mm

The month with the highest snowfall is February (52mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in July - Maryland Heights, MO
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (6.8 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in July / Average sunshine in July - Maryland Heights, MO
  • Average daylight in July: 14.6h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in July: 10.6h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is January (Average sunshine: 4.6h).

Average sunshine days in July - Maryland Heights, MO
  • Average sunshine days in July: 11.4 days

The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is July (11.4 days).

Average UV index in July - Maryland Heights, MO
  • Average UV index in July: 6

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

Average cloud cover in July - Maryland Heights, 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 - Maryland Heights, MO
  • Average visibility in July: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).