June weather forecast and climate
Maryland Heights, MO

June, the first month of the summer, in Maryland Heights, is still a warm month, with temperature in the range of an average low of 66.7°F (19.3°C) and an average high of 84.2°F (29°C).

Temperature

In June, the average high-temperature rises, from a warm 74.8°F (23.8°C) in May, to a still moderately hot 84.2°F (29°C). In Maryland Heights, the average low-temperature is 66.7°F (19.3°C).

Heat index

In June, the average heat index is calculated to a tropical 92.7°F (33.7°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, differences in body mass, height, and shape, wind), and activity. 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 particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In June, the average relative humidity is 75%.

Rainfall

In Maryland Heights, during June, the rain falls for 14.8 days and regularly aggregates up to 3.03" (77mm) of precipitation. Throughout the year, in Maryland Heights, there are 141.9 rainfall days, and 27.68" (703mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Maryland Heights.

Daylight

With an average of 14.8h of daylight, June has the longest days of the year.

Sunshine

In June, the average sunshine is 10.5h.

UV index

Months with the highest UV index in Maryland Heights are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: In June, the average maximum UV index of 6 translate into the following recommendations:
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 temperature in June in Maryland Heights?

The average high-temperature, in June, in Maryland Heights, Missouri, is 84.2°F (29°C), while the average low-temperature is 66.7°F (19.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that represents influence of the relative humidity to air temperaure, in June is evaluated at 92.7°F (33.7°C).

What is the average humidity in June in Maryland Heights?

In Maryland Heights, the average relative humidity in June is 75%.

How much does it rain in Maryland Heights in June?

In June, the rain falls for 14.8 days. Throughout June, 3.03" (77mm) of precipitation is accumulated.

When it does not snow in Maryland Heights?

In Maryland Heights snow does not fall in April through October.

When are the longest days in Maryland Heights?

With an average of 14.8h of daylight, June has the longest days of the year.

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

The average length of the day in June in Maryland Heights is 14.8h.

How many hours of sunshine does Maryland Heights have in June?

In Maryland Heights, the average sunshine in June is 10.5h.

What are the months with the highest UV index in Maryland Heights?

Months with the highest UV index in Maryland Heights, Missouri, are May through August, with an average maximum UV index of 6.

What is the UV index intensity in June in Maryland Heights?

In June, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays.
Average temperature in June - Maryland Heights, MO
  • Average high temperature in June: 29°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 June: 19.3°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 June - Maryland Heights, MO
  • Average pressure in June: 1013.2mbar

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 June - Maryland Heights, MO
  • Average wind speed in June: 10.4km/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 June - Maryland Heights, 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 - Maryland Heights, MO
  • Average rainfall in June: 77mm

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

Average rainfall days in June - Maryland Heights, MO
  • Average rainfall days in June: 14.8 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 June - Maryland Heights, MO
  • Average snowfall in June: 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 June - Maryland Heights, MO
  • Average snowfall days in June: 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 June / Average sunshine in June - Maryland Heights, MO
  • Average daylight in June: 14.8h

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 June: 10.5h

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 June - Maryland Heights, 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 - Maryland Heights, MO
  • Average UV index in June: 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 June - Maryland Heights, 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 - Maryland Heights, MO
  • Average visibility in June: 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).