July weather forecast
Webster Groves, MO

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Weather in July

July marks mid-summer in Webster Groves, and it is characterized by hot days and warm nights. The mercury soars from previous months, achieving the highest recorded values at 86.9°F (30.5°C) during the day and 69.1°F (20.6°C) overnight. Weekend trips to the river or lake become a common leisure activity among locals. Meanwhile, the long sunlit hours make summer gardening viable, and barbeques, backyard parties become a common sight. Despite occasional heatwaves, residents adapt effortlessly to enjoy the full swing of the warm season.

Temperature

July is the month that records the highest temperatures, with averages ranging from a high of 86.9°F (30.5°C) to a low of 69.1°F (20.6°C).

Heat index

In July, the heat index is calculated to be a torrid 100.4°F (38°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

The average relative humidity in July is 76%.

Rainfall

In Webster Groves, during July, the rain falls for 16.7 days and regularly aggregates up to 3.19" (81mm) of precipitation. In Webster Groves, Missouri, during the entire year, the rain falls for 144.8 days and collects up to 30.59" (777mm) of precipitation.

Snowfall

April through October are months without snowfall in Webster Groves.

Daylight

In July, the average length of the day is 14h and 33min.
On the first day of the month, sunrise is at 5:41 am and sunset at 8:29 pm. On the last day of July, in Webster Groves, Missouri, sunrise is at 6:02 am and sunset at 8:12 pm CDT.

Sunshine

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

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 6 during July translates into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

What is the warmest month in Webster Groves?

July, marked by an average high-temperature of 86.9°F (30.5°C) and a low-temperature of 69.1°F (20.6°C), is the warmest month in Webster Groves, Missouri.

Is it hot in Webster Groves during July?

The high-temperature in Webster Groves, Missouri, during July is 86.9°F (30.5°C) and the low-temperature is 69.1°F (20.6°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in July is calculated to be 100.4°F (38°C).

What is the average humidity in July in Webster Groves?

In July, the average relative humidity in Webster Groves is 76%.

How much does it rain in Webster Groves in July?

In Webster Groves, Missouri, in July, during 16.7 rainfall days, 3.19" (81mm) of precipitation is typically accumulated.

When it does not snow in Webster Groves?

April through October are months without snowfall in Webster Groves, Missouri.

What is the average length of the day in July in Webster Groves?

In Webster Groves, the average day length in July is 14h and 33min.

What time are sunrise and sunset in July in Webster Groves?

In July, on the first day of the month, sunrise is at 5:41 am and sunset at 8:29 pm. On the last day of the month, in Webster Groves, Missouri, sunrise is at 6:02 am and sunset at 8:12 pm CDT.

What are the months with the most sunshine in Webster Groves?

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 Webster Groves?

In Webster Groves, Missouri, the average sunshine duration in July is 10.5h.

What is the month with the highest UV index in Webster Groves?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Webster Groves, Missouri.

How high is the UV index in July in Webster Groves?

In July, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents 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
Webster Groves, MO

Average temperature in July - Webster Groves, 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).

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Average pressure in July
Webster Groves, MO

Average pressure in July - Webster Groves, 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).

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Average wind speed in July
Webster Groves, MO

Average wind speed in July - Webster Groves, 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).

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Average humidity in July
Webster Groves, MO

Average humidity in July - Webster Groves, 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%).

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Average rainfall in July
Webster Groves, MO

Average rainfall in July - Webster Groves, 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").

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Average rainfall days in July
Webster Groves, MO

Average rainfall days in July - Webster Groves, 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).

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Average snowfall in July
Webster Groves, MO

Average snowfall in July - Webster Groves, 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").

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Average snowfall days in July
Webster Groves, MO

Average snowfall days in July - Webster Groves, 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).

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Average daylight in July /
Average sunshine in July
Webster Groves, MO

Average daylight in July / Average sunshine in July - Webster Groves, 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).

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Average sunshine days in July
Webster Groves, MO

Average sunshine days in July - Webster Groves, 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).

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Average UV index in July
Webster Groves, MO

Average UV index in July - Webster Groves, 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).

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Average cloud cover in July
Webster Groves, MO

Average cloud cover in July - Webster Groves, 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).

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Average visibility in July
Webster Groves, MO

Average visibility in July - Webster Groves, 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).

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Webster Groves, Missouri, USA

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