June weather forecast
Saint Louis, OK

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Weather in June

June, the first month of the summer in Saint Louis, is a tropical month, with an average temperature varying between 69.4°F (20.8°C) and 86.7°F (30.4°C).

Temperature

As June begins, there is an increase in the average high-temperature, moving from a moderately hot 76.8°F (24.9°C) in May to a hot 86.7°F (30.4°C). An average low-temperature of 69.4°F (20.8°C) is observed in Saint Louis during the June nights.

Heat index

For most parts of June, the heat index is estimated at a sweltering 98.6°F (37°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

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

Rainfall

In Saint Louis, during June, the rain falls for 10.4 days and regularly aggregates up to 1.65" (42mm) of precipitation. Throughout the year, there are 111.2 rainfall days, and 17.13" (435mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Saint Louis.

Daylight

June has the longest days of the year in Saint Louis, Oklahoma, with an average of 14h and 30min of daylight.
On the first day of the month, sunrise is at 6:14 am and sunset at 8:36 pm. On the last day of June, in Saint Louis, sunrise is at 6:16 am and sunset at 8:45 pm CDT.

Sunshine

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

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index, 7 in June, converts into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

How hot does it get in Saint Louis in June?

The high-temperature, in June, in Saint Louis, is 86.7°F (30.4°C), while the low-temperature averages to 69.4°F (20.8°C). In June, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is estimated at 98.6°F (37°C).

What is the average humidity in June in Saint Louis?

In June, the average relative humidity is 75%.

How many days does it rain in June in Saint Louis?

In Saint Louis, Oklahoma, during June, the rain falls for 10.4 days and regularly aggregates up to 1.65" (42mm) of precipitation.

When it does not snow in Saint Louis?

In Saint Louis, Oklahoma, snow does not fall in May through October.

When are the longest days in Saint Louis?

With an average of 14h and 30min of daylight, June has the longest days of the year in Saint Louis.

How many hours of daylight does Saint Louis have in June?

In June, the average day length in Saint Louis is 14h and 29min.

When is the sunrise / sunset in June in Saint Louis?

On the first day of June, sunrise is at 6:14 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:45 pm CDT.

How many hours of sunshine does Saint Louis have in June?

The average sunshine duration in June is 10.5h.

What is the month with the highest UV index in Saint Louis?

June through August, with an average maximum UV index of 7, are months with the highest UV index in Saint Louis.

What is the UV index reading in June in Saint Louis?

In Saint Louis, Oklahoma, the average daily maximum UV index in June is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability 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 Louis, OK

Average temperature in June - Saint Louis, OK
  • Average high temperature in June: 86.7°F

The warmest month (with the highest average high temperature) is August (92.5°F).
The month with the lowest average high temperature is January (49.3°F).

  • Average low temperature in June: 69.4°F

The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

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Average pressure in June
Saint Louis, OK

Average pressure in June - Saint Louis, OK
  • Average pressure in June: 29.89"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in June
Saint Louis, OK

Average wind speed in June - Saint Louis, OK
  • Average wind speed in June: 8.5mph

The windiest months (with the highest average wind speed) are March and April (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).

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Average humidity in June
Saint Louis, OK

Average humidity in June - Saint Louis, OK
  • Average humidity in June: 75%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (63%).

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Average rainfall in June
Saint Louis, OK

Average rainfall in June - Saint Louis, OK
  • Average rainfall in June: 1.65"

The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is February (0.71").

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Average rainfall days in June
Saint Louis, OK

Average rainfall days in June - Saint Louis, OK
  • Average rainfall days in June: 10.4 days

The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall in June
Saint Louis, OK

Average snowfall in June - Saint Louis, OK
  • Average snowfall in June: 0"

The month with the highest snowfall is February (0.75").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in June
Saint Louis, OK

Average snowfall days in June - Saint Louis, OK
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in June /
Average sunshine in June
Saint Louis, OK

Average daylight in June / Average sunshine in June - Saint Louis, OK
  • Average daylight in June: 14h and 3min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in June: 10h and 3min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in June
Saint Louis, OK

Average sunshine days in June - Saint Louis, OK
  • Average sunshine days in June: 17.1 days

The month with the most sunshine days is January (24 days).
The months with the least sunshine days are April, May and September (15.9 days).

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Average UV index in June
Saint Louis, OK

Average UV index in June - Saint Louis, OK
  • Average UV index in June: 7

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in June
Saint Louis, OK

Average cloud cover in June - Saint Louis, OK
  • Average cloud cover in June: 23

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in June
Saint Louis, OK

Average visibility in June - Saint Louis, OK
  • 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).

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Saint Louis, Oklahoma, USA

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