August weather forecast
Westville, IL

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Weather in August

August, the last month of the summer in Westville, is another warm month, with an average temperature ranging between max 80.6°F (27°C) and min 63.3°F (17.4°C).

Temperature

With the onset of August, Westville's average high-temperature clocks in at a still moderately hot 80.6°F (27°C), showing a minor fluctuation from the previous month. Throughout the month of August, Westville observes an average nighttime temperature of 63.3°F (17.4°C).

Heat index

Throughout August, the heat index is computed to be a tropical 86°F (30°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.
For clarity, heat index numbers account for light winds and areas under shade. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.

Humidity

The average relative humidity in August is 83%.

Rainfall

In Westville, in August, during 14.6 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Westville, during the entire year, the rain falls for 151.8 days and collects up to 25.63" (651mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in August is 13h and 42min.
On the first day of August in Westville, sunrise is at 5:49 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:23 pm CDT.

Sunshine

In August, the average sunshine in Westville is 9.9h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Westville in August?

The high-temperature, in August, in Westville, is 80.6°F (27°C), while the low-temperature averages to 63.3°F (17.4°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is computed to be 86°F (30°C).

What is the average humidity in August in Westville?

In Westville, the average relative humidity in August is 83%.

How many days does it rain in August in Westville?

In Westville, during August, the rain falls for 14.6 days and regularly aggregates up to 2.24" (57mm) of precipitation.

When it does not snow in Westville?

In Westville, snow does not fall in May through October.

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

The average day length in August is 13h and 42min.

What time are sunrise and sunset in August in Westville?

In August, on the first day of the month, sunrise is at 5:49 am and sunset at 8:04 pm. On the last day of the month, in Westville, Illinois, sunrise is at 6:18 am and sunset at 7:23 pm CDT.

How many hours of sunshine does Westville have in August?

The average sunshine duration in August in Westville, Illinois, is 9.9h.

What are the months with the highest UV index in Westville?

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

What is the UV index intensity in August in Westville?

The average daily maximum UV index in August in Westville is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
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
Westville, IL

Average temperature in August - Westville, IL
  • Average high temperature in August: 80.6°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in August
Westville, IL

Average pressure in August - Westville, IL
  • Average pressure in August: 29.98"Hg

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

Average wind speed in August
Westville, IL

Average wind speed in August - Westville, IL
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

Average humidity in August
Westville, IL

Average humidity in August - Westville, IL
  • Average humidity in August: 83%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
Westville, IL

Average rainfall in August - Westville, IL
  • Average rainfall in August: 2.24"

The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").

Average rainfall days in August
Westville, IL

Average rainfall days in August - Westville, IL
  • Average rainfall days in August: 14.6 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).

Average snowfall in August
Westville, IL

Average snowfall in August - Westville, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Westville, IL

Average snowfall days in August - Westville, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Westville, IL

Average daylight in August / Average sunshine in August - Westville, IL
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in August
Westville, IL

Average sunshine days in August - Westville, IL
  • Average sunshine days in August: 11.9 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).

Average UV index in August
Westville, IL

Average UV index in August - Westville, IL
  • 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).

Average cloud cover in August
Westville, IL

Average cloud cover in August - Westville, IL
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).

Average visibility in August
Westville, IL

Average visibility in August - Westville, IL
  • Average visibility in August: 5mi

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

Westville, Illinois, USA

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