August weather forecast
Collinsville, OK

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Weather in August

August, the last month of the summer in Collinsville, is another hot month, with an average temperature varying between 70°F (21.1°C) and 90.1°F (32.3°C).

Temperature

Collinsville signifies an average high-temperature of a still hot 90.1°F (32.3°C) in August, closely mirroring the 91°F (32.8°C) of July. During August, the temperature tends to dip to an average of 70°F (21.1°C) at night.

Heat index

August's mean heat index is appraised at a scorching 105.8°F (41°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. 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. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

January, August and October, with an average relative humidity of 68%, are the least humid months.

Rainfall

In Collinsville, Oklahoma, during August, the rain falls for 12.9 days and regularly aggregates up to 3.31" (84mm) of precipitation. Throughout the year, in Collinsville, there are 132.6 rainfall days, and 29.69" (754mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In August, the average length of the day in Collinsville is 13h and 30min.
On the first day of August in Collinsville, sunrise is at 6:30 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 7:52 pm CDT.

Sunshine

In Collinsville, Oklahoma, the average sunshine in August is 10.9h.

UV index

The average daily maximum UV index in August in Collinsville is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 6 in August translates into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

How hot does it get in Collinsville in August?

The average high-temperature, in August, in Collinsville, is 90.1°F (32.3°C), while the average low-temperature is 70°F (21.1°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is appraised at 105.8°F (41°C).

What is the least humid month in Collinsville?

January, August and October, with an average relative humidity of 68%, are the least humid months in Collinsville, Oklahoma.

What is the average humidity in August in Collinsville?

In Collinsville, the average relative humidity in August is 68%.

How much does it rain in Collinsville in August?

In Collinsville, in August, it is raining for 12.9 days, with typically 3.31" (84mm) of accumulated precipitation.

When it does not snow in Collinsville?

In Collinsville, Oklahoma, snow does not fall in April through October.

What is the average length of the day in August in Collinsville?

In August, the average day length is 13h and 30min.

When are sunrise and sunset in August in Collinsville?

On the first day of August, sunrise is at 6:30 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 7:52 pm CDT.

How many hours of sunshine does Collinsville have in August?

In Collinsville, the average sunshine duration in August is 10.9h.

What is the UV index intensity in August in Collinsville?

In Collinsville, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe 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 August
Collinsville, OK

Average temperature in August - Collinsville, OK
  • Average high temperature in August: 90.1°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (45.9°F).

  • Average low temperature in August: 70°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).

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Average pressure in August
Collinsville, OK

Average pressure in August - Collinsville, OK
  • Average pressure in August: 29.94"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in August
Collinsville, OK

Average wind speed in August - Collinsville, OK
  • Average wind speed in August: 7mph

The windiest month (with the highest average wind speed) is March (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

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Average humidity in August
Collinsville, OK

Average humidity in August - Collinsville, OK
  • Average humidity in August: 68%

The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, August and October (68%).

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Average rainfall in August
Collinsville, OK

Average rainfall in August - Collinsville, OK
  • Average rainfall in August: 3.31"

The wettest month (with the highest rainfall) is May (5.28").
The driest month (with the least rainfall) is January (1.22").

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Average rainfall days in August
Collinsville, OK

Average rainfall days in August - Collinsville, OK
  • Average rainfall days in August: 12.9 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (6.1 days).

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Average snowfall in August
Collinsville, OK

Average snowfall in August - Collinsville, OK
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Collinsville, OK

Average snowfall days in August - Collinsville, OK
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (2.2 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 August /
Average sunshine in August
Collinsville, OK

Average daylight in August / Average sunshine in August - Collinsville, OK
  • Average daylight in August: 13h and 3min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in August: 10h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in August
Collinsville, OK

Average sunshine days in August - Collinsville, OK
  • Average sunshine days in August: 15.8 days

The months with the most sunshine days are January and December (21.9 days).
The month with the least sunshine days is May (13.5 days).

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Average UV index in August
Collinsville, OK

Average UV index in August - Collinsville, OK
  • Average UV index in August: 6

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

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Average cloud cover in August
Collinsville, OK

Average cloud cover in August - Collinsville, OK
  • Average cloud cover in August: 21

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in August
Collinsville, OK

Average visibility in August - Collinsville, OK
  • Average visibility in August: 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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Collinsville, Oklahoma, USA

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