June weather forecast
Saint Charles, MO

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Weather in June

June, the first month of the summer in Saint Charles, is also a moderately hot month, with temperature in the range of an average high of 84.2°F (29°C) and an average low of 66.7°F (19.3°C).

Temperature

The onset of June brings a rise in the average high-temperature, elevating from a moderately hot 74.8°F (23.8°C) in May to a still warm 84.2°F (29°C). In June, the recorded average low-temperature in Saint Charles is a refreshing 66.7°F (19.3°C).

Heat index

The heat index value for June is calculated to be a hot 93.2°F (34°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Always consider that heat index estimations are for light winds and places in the shade. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

In Saint Charles, the average relative humidity in June is 75%.

Rainfall

In Saint Charles, in June, it is raining for 14.8 days, with typically 3.03" (77mm) of accumulated precipitation. Throughout the year, there are 141.9 rainfall days, and 27.68" (703mm) of precipitation is accumulated.

Snowfall

In Saint Charles, snow does not fall in April through October.

Daylight

With an average of 14h and 48min of daylight, June has the longest days of the year.
On the first day of June, sunrise is at 5:38 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:31 pm CDT.

Sunshine

In Saint Charles, the average sunshine in June is 10.5h.

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 exposure to the Sun's UV radiation for the ordinary person.
Note: In June, a daily UV index of 6 turns into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Saint Charles in June?

The high-temperature during June is 84.2°F (29°C) and the low-temperature is 66.7°F (19.3°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in June is calculated to be 93.2°F (34°C).

What is the average humidity in June?

In June, the average relative humidity in Saint Charles is 75%.

How many days does it rain in June?

In Saint Charles, during June, the rain falls for 14.8 days and regularly aggregates up to 3.03" (77mm) of precipitation.

When it does not snow?

April through October are months without snowfall.

When are the longest days?

June has the longest days of the year in Saint Charles, with an average of 14h and 48min of daylight.

What is the average length of the day in June?

The average day length in June is 14h and 50min.

When is the sunrise / sunset in June?

On the first day of June, sunrise is at 5:38 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:31 pm CDT.

How long on average sun shines in June?

In Saint Charles, the average sunshine duration in June is 10.5h.

What is the month with the highest UV index?

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

What is the UV index intensity in June?

The average daily maximum UV index in June is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
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
Saint Charles, MO

Average temperature in June - Saint Charles, MO
  • Average high temperature in June: 84.2°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (37.2°F).

  • Average low temperature in June: 66.7°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in June
Saint Charles, MO

Average pressure in June - Saint Charles, 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
Saint Charles, MO

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

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).

Average humidity in June
Saint Charles, MO

Average humidity in June - Saint Charles, MO
  • Average humidity in June: 75%

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

Average rainfall in June
Saint Charles, MO

Average rainfall in June - Saint Charles, MO
  • Average rainfall in June: 3.03"

The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is February (1.42").

Average rainfall days in June
Saint Charles, MO

Average rainfall days in June - Saint Charles, MO
  • Average rainfall days in June: 14.8 days

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

Average snowfall in June
Saint Charles, MO

Average snowfall in June - Saint Charles, MO
  • Average snowfall in June: 0"

The month with the highest snowfall is February (2.05").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in June
Saint Charles, MO

Average snowfall days in June - Saint Charles, MO
  • Average snowfall days in June: 0 days

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

Average daylight in June /
Average sunshine in June
Saint Charles, MO

Average daylight in June / Average sunshine in June - Saint Charles, 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 3min

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

Average sunshine days in June
Saint Charles, MO

Average sunshine days in June - Saint Charles, MO
  • Average sunshine days in June: 11.8 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 June
Saint Charles, MO

Average UV index in June - Saint Charles, 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, February and December (UV index 2).

Average cloud cover in June
Saint Charles, MO

Average cloud cover in June - Saint Charles, MO
  • Average cloud cover in June: 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 June
Saint Charles, MO

Average visibility in June - Saint Charles, 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).

Saint Charles, Missouri, USA

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