August weather forecast
Collinsville, OH

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Weather in August

The last month of the summer, August, is another warm month in Collinsville, Ohio, with an average temperature fluctuating between 62.4°F (16.9°C) and 80.8°F (27.1°C).

Temperature

The average high-temperature in August, at a still moderately hot 80.8°F (27.1°C), reveals a modest deviation from July's 81.5°F (27.5°C). The nights of August anticipate an average low-temperature of 62.4°F (16.9°C).

Heat index

The heat index in August is evaluated at a hot 86°F (30°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
The metrics for the heat index are tailored for both shady environments and light winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

In Collinsville, the average relative humidity in August is 79%.

Rainfall

In Collinsville, Ohio, in August, it is raining for 15.2 days, with typically 2.4" (61mm) of accumulated precipitation. Throughout the year, there are 169 rainfall days, and 31.85" (809mm) of precipitation is accumulated.

Snowfall

In Collinsville, snow does not fall in May through September.

Daylight

In Collinsville, the average length of the day in August is 13h and 40min.
On the first day of August, sunrise is at 6:38 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 8:10 pm EDT.

Sunshine

The average sunshine in August in Collinsville is 10h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Collinsville. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

What is the average August temperature in Collinsville?

The average high-temperature, in August, in Collinsville, is 80.8°F (27.1°C), while the average low-temperature is 62.4°F (16.9°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 86°F (30°C).

What is the average humidity in August in Collinsville?

In Collinsville, Ohio, the average relative humidity in August is 79%.

How much does it rain in Collinsville in August?

In August, in Collinsville, the rain falls for 15.2 days. Throughout August, 2.4" (61mm) of precipitation is accumulated.

When it does not snow in Collinsville?

In Collinsville, snow does not fall in May through September.

How many hours of daylight does Collinsville have in August?

The average day length in August in Collinsville is 13h and 40min.

When is the sunrise / sunset in August in Collinsville?

On the first day of August, sunrise is at 6:38 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 8:10 pm EDT.

How long on average sun shines in August in Collinsville?

In August, the average sunshine duration is 10h.

What is the month with the highest UV index in Collinsville?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Collinsville, Ohio.

How high is the UV index in August in Collinsville?

In Collinsville, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat 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 August
Collinsville, OH

Average temperature in August - Collinsville, OH
  • Average high temperature in August: 80.8°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in August: 62.4°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in August
Collinsville, OH

Average pressure in August - Collinsville, OH
  • Average pressure in August: 29.98"Hg

The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Collinsville, OH

Average wind speed in August - Collinsville, OH
  • Average wind speed in August: 5.7mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in August
Collinsville, OH

Average humidity in August - Collinsville, OH
  • Average humidity in August: 79%

The months with the highest relative humidity are January, February and December (82%).
The months with the lowest relative humidity are October and November (75%).

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Average rainfall in August
Collinsville, OH

Average rainfall in August - Collinsville, OH
  • Average rainfall in August: 2.4"

The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in August
Collinsville, OH

Average rainfall days in August - Collinsville, OH
  • Average rainfall days in August: 15.2 days

The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (9.2 days).

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Average snowfall in August
Collinsville, OH

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

The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Collinsville, OH

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

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Collinsville, OH

Average daylight in August / Average sunshine in August - Collinsville, OH
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 0min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in August
Collinsville, OH

Average sunshine days in August - Collinsville, OH
  • Average sunshine days in August: 12.6 days

The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is May (8.8 days).

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Average UV index in August
Collinsville, OH

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Collinsville, OH

Average cloud cover in August - Collinsville, OH
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in August
Collinsville, OH

Average visibility in August - Collinsville, OH
  • Average visibility in August: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

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Collinsville, Ohio, USA

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