August weather forecast and climate
Collinsville, AL

The last month of the summer, August, is another tropical month in Collinsville, Alabama, with average temperature varying between 87.1°F (30.6°C) and 68°F (20°C).

Temperature

In Collinsville, the average high-temperature in August is relatively the same as in July - a still tropical 87.1°F (30.6°C). The average low-temperature, in Collinsville, is 68°F (20°C).

Heat index

The average heat index is appraised at a torrid 100.9°F (38.3°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. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, metabolic differences, clothing), 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 especially crucial for babies and toddlers. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In Collinsville, the average relative humidity is 76%.

Rainfall

In Collinsville, Alabama, it is raining for 20.3 days, with typically 4.09" (104mm) of accumulated precipitation. In Collinsville, during the entire year, the rain falls for 184 days and collects up to 43.54" (1106mm) of precipitation.

Snowfall

April through October are months without snowfall in Collinsville, Alabama.

Daylight

The average length of the day in August is 13.4h.

Sunshine

In August, the average sunshine is 10.2h.

UV index

Months with the highest UV index in Collinsville are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 transform into the following instructions:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in August in Collinsville?

In Collinsville, in August, the average high-temperature is 87.1°F (30.6°C), and the average low-temperature is 68°F (20°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that represents influence of the relative humidity to air temperaure, is calculated to 100.9°F (38.3°C).

What is the average humidity in August in Collinsville?

In Collinsville, the average relative humidity in August is 76%.

How many days does it rain in August in Collinsville?

In Collinsville, Alabama, in August, it is raining for 20.3 days, with typically 4.09" (104mm) of accumulated precipitation.

When it does not snow in Collinsville?

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

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

In August, the average length of the day in Collinsville is 13.4h.

How long on average sun shines in August in Collinsville?

The average sunshine in August in Collinsville, Alabama, is 10.2h.

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

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

How high is the UV index in August in Collinsville?

The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV radiation.
Average temperature in August - Collinsville, AL
  • Average high temperature in August: 87.1°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (48.7°F).

  • Average low temperature in August: 68°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).

Average pressure in August - Collinsville, AL
  • Average pressure in August: 30"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.98").

Average wind speed in August - Collinsville, AL
  • Average wind speed in August: 4.3mph

The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).

Average humidity in August - Collinsville, AL
  • Average humidity in August: 76%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (74%).

Average rainfall in August - Collinsville, AL
  • Average rainfall in August: 4.09"

The wettest months (with the highest rainfall) are February and December (4.49").
The driest month (with the least rainfall) is October (2.64").

Average rainfall days in August - Collinsville, AL
  • Average rainfall days in August: 20.3 days

The month with the highest number of rainy days is July (21.6 days).
The month with the least rainy days is November (10.1 days).

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

The month with the highest snowfall is February (0.79").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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

The month with the highest number of snowfall days is February (1.4 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August / Average sunshine in August - Collinsville, AL
  • Average daylight in August: 13.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in August: 10.2h

The month with the most sunshine is June (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average sunshine days in August - Collinsville, AL
  • Average sunshine days in August: 8.5 days

The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is July (7.3 days).

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

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 2).

Average cloud cover in August - Collinsville, AL
  • Average cloud cover in August: 32

The month with the most cloud cover is February (Cloud cover 49).
Months with the least cloud cover are June and September (Cloud cover 30).

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

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