June weather forecast
Charleston, MO

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Weather in June

The first month of the summer, June, is a hot month in Charleston, Missouri, with an average temperature fluctuating between 68.4°F (20.2°C) and 86°F (30°C).

Temperature

June sees a temperature increase, moving from a warm 76.6°F (24.8°C) in May to a tropical 86°F (30°C). In June, the recorded average low-temperature is an agreeable 68.4°F (20.2°C).

Heat index

June's mean heat index is calculated to be a fiery hot 96.8°F (36°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. 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.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In June, the average relative humidity is 74%.

Rainfall

In June, the rain falls for 14.8 days. Throughout June, 2.91" (74mm) of precipitation is accumulated. In Charleston, Missouri, during the entire year, the rain falls for 153 days and collects up to 33.9" (861mm) of precipitation.

Snowfall

In Charleston, snow does not fall in May through October.

Daylight

With an average of 14h and 42min of daylight, June has the longest days of the year.
On the first day of June, sunrise is at 5:39 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:20 pm CDT.

Sunshine

June and July, with an average of 10.7h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In June, a regular UV index of 6 translates into these guidelines:
Guard against overexposure. Protection from sun-induced harm is essential. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is June?

The average high-temperature, in June, in Charleston, is 86°F (30°C), while the average low-temperature is 68.4°F (20.2°C). In June, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is calculated to be 96.8°F (36°C).

What is the average humidity in June?

The average relative humidity in June is 74%.

How many days does it rain in June?

In Charleston, in June, it is raining for 14.8 days, with typically 2.91" (74mm) of accumulated precipitation.

When it does not snow?

In Charleston, snow does not fall in May through October.

When are the longest days?

The month with the longest days in Charleston, Missouri, is June, with an average of 14h and 42min of daylight.

What is the average length of the day in June?

The average day length in June is 14h and 39min.

What time are sunrise and sunset in June?

On the first day of June in Charleston, Missouri, sunrise is at 5:39 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:20 pm CDT.

What is the month with the most sunshine in Charleston?

The months with the most sunshine are June and July, with an average of 10.7h of sunshine.

How long on average sun shines in June?

The average sunshine duration in June is 10.7h.

What are the months with the highest UV index?

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

How high is the UV index in June?

In Charleston, the average daily maximum UV index in June is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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 June
Charleston, MO

Average temperature in June - Charleston, MO
  • Average high temperature in June: 86°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 (41.5°F).

  • Average low temperature in June: 68.4°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

Average pressure in June
Charleston, MO

Average pressure in June - Charleston, MO
  • Average pressure in June: 29.94"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in June
Charleston, MO

Average wind speed in June - Charleston, MO
  • Average wind speed in June: 6.5mph

The windiest months (with the highest average wind speed) are January, February and March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in June
Charleston, MO

Average humidity in June - Charleston, MO
  • Average humidity in June: 74%

The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).

Average rainfall in June
Charleston, MO

Average rainfall in June - Charleston, MO
  • Average rainfall in June: 2.91"

The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is September (1.22").

Average rainfall days in June
Charleston, MO

Average rainfall days in June - Charleston, MO
  • Average rainfall days in June: 14.8 days

The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in June
Charleston, MO

Average snowfall in June - Charleston, MO
  • Average snowfall in June: 0"

The month with the highest snowfall is February (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in June
Charleston, MO

Average snowfall days in June - Charleston, MO
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in June /
Average sunshine in June
Charleston, MO

Average daylight in June / Average sunshine in June - Charleston, MO
  • Average daylight in June: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in June: 10h and 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in June
Charleston, MO

Average sunshine days in June - Charleston, MO
  • Average sunshine days in June: 12.9 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (12.1 days).

Average UV index in June
Charleston, MO

Average UV index in June - Charleston, MO
  • Average UV index in June: 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 and December (UV index 2).

Average cloud cover in June
Charleston, MO

Average cloud cover in June - Charleston, MO
  • Average cloud cover in June: 25

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 25).

Average visibility in June
Charleston, MO

Average visibility in June - Charleston, 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).

Charleston, Missouri, USA

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