June weather forecast
Ballwin, MO

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Weather in June

June ushers in the beginning of the summer season in Ballwin. The city is characterized by hot temperatures, reaching up to 85.3°F (29.6°C). The city comes alive with lush greenery, outdoor festivals, and recreational activities amplified by the long, sunlit days. It would not be uncommon to experience afternoon thunderstorms due to the rise in heat and humidity levels.

Temperature

The beginning of June in Ballwin signals a rise in the average high-temperature, moving from 75.7°F (24.3°C) in May to a still moderately hot 85.3°F (29.6°C). Ballwin records a consistent low-temperature of 66.4°F (19.1°C) during June nights.

Heat index

The heat index in June is calculated to be a fiery hot 95°F (35°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Ballwin, the average relative humidity in June is 76%.

Rainfall

In Ballwin, in June, it is raining for 13.8 days, with typically 2.56" (65mm) of accumulated precipitation. In Ballwin, during the entire year, the rain falls for 134.1 days and collects up to 23.82" (605mm) of precipitation.

Snowfall

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

Daylight

The month with the longest days in Ballwin is June, with an average of 14h and 48min of daylight.
On the first day of June, sunrise is at 5:39 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:30 pm CDT.

Sunshine

In June, the average sunshine is 10.3h.

UV index

In Ballwin, the average daily maximum UV index in June is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high daily UV index of 6 during June translates into the following directions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Ballwin in June?

In June, the average high-temperature and low-temperature in Ballwin are 85.3°F (29.6°C) and 66.4°F (19.1°C) respectively. 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 June is calculated to be 95°F (35°C).

What is the average humidity in June in Ballwin?

The average relative humidity in June in Ballwin is 76%.

How much does it rain in Ballwin in June?

In June, in Ballwin, the rain falls for 13.8 days. Throughout June, 2.56" (65mm) of precipitation is accumulated.

When it does not snow in Ballwin?

April through October are months without snowfall.

When are the longest days in Ballwin?

The month with the longest days is June, with an average of 14h and 48min of daylight.

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

In Ballwin, the average day length in June is 14h and 49min.

What time are sunrise and sunset in June in Ballwin?

In June, on the first day of the month, sunrise is at 5:39 am and sunset at 8:21 pm. On the last day of the month, in Ballwin, Missouri, sunrise is at 5:41 am and sunset at 8:30 pm CDT.

How long on average sun shines in June in Ballwin?

In Ballwin, Missouri, the average sunshine duration in June is 10.3h.

How high is the UV index in June in Ballwin?

The average daily maximum UV index in June in Ballwin, Missouri, is 6. A UV Index 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 June
Ballwin, MO

Average temperature in June - Ballwin, MO
  • Average high temperature in June: 85.3°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 June: 66.4°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 June
Ballwin, MO

Average pressure in June - Ballwin, MO
  • Average pressure in June: 29.92"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 June
Ballwin, MO

Average wind speed in June - Ballwin, MO
  • Average wind speed in June: 6.2mph

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 June
Ballwin, MO

Average humidity in June - Ballwin, MO
  • Average humidity in June: 76%

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

Average rainfall in June
Ballwin, MO

Average rainfall in June - Ballwin, MO
  • Average rainfall in June: 2.56"

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 June
Ballwin, MO

Average rainfall days in June - Ballwin, MO
  • Average rainfall days in June: 13.8 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 June
Ballwin, MO

Average snowfall in June - Ballwin, MO
  • Average snowfall in June: 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 June
Ballwin, MO

Average snowfall days in June - Ballwin, MO
  • Average snowfall days in June: 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 June /
Average sunshine in June
Ballwin, MO

Average daylight in June / Average sunshine in June - Ballwin, MO
  • Average daylight in June: 14h and 5min

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 June: 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 June
Ballwin, MO

Average sunshine days in June - Ballwin, MO
  • Average sunshine days in June: 12.8 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 June
Ballwin, MO

Average UV index in June - Ballwin, MO
  • Average UV index in June: 6

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 June
Ballwin, MO

Average cloud cover in June - Ballwin, MO
  • Average cloud cover in June: 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 June
Ballwin, MO

Average visibility in June - Ballwin, MO
  • Average visibility in June: 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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