August weather forecast
Butler, IL

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Weather in August

The last month of the summer, August, is another warm month in Butler, Illinois, with an average temperature ranging between min 64.9°F (18.3°C) and max 82.6°F (28.1°C).

Temperature

The dawn of August sees an average high-temperature of a still moderately hot 82.6°F (28.1°C), subtly contrasting with July's 83.8°F (28.8°C). In Butler, the average nighttime temperature during August is a refreshing 64.9°F (18.3°C).

Heat index

The heat index value during August is computed to be a hot 91.4°F (33°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are largely significant for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.

Humidity

In Butler, the average relative humidity in August is 81%.

Rainfall

In Butler, during August, the rain falls for 12.3 days and regularly aggregates up to 2.36" (60mm) of precipitation. In Butler, during the entire year, the rain falls for 138.5 days and collects up to 24.33" (618mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Butler, Illinois, the average length of the day in August is 13h and 40min.
On the first day of the month, sunrise is at 5:59 am and sunset at 8:09 pm. On the last day of August, in Butler, sunrise is at 6:26 am and sunset at 7:29 pm CDT.

Sunshine

In August, the average sunshine in Butler, Illinois, is 9.8h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In August, the maximum UV index of 6 suggests these recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. 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. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.

Frequently asked questions

How hot is it in August?

The high-temperature, in August, in Butler, records 82.6°F (28.1°C), while the low-temperature is 64.9°F (18.3°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is computed to be 91.4°F (33°C).

What is the average humidity in August?

In August, the average relative humidity is 81%.

How many days does it rain in August?

In August, the rain falls for 12.3 days. Throughout August, 2.36" (60mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Butler have in August?

In August, the average day length is 13h and 40min.

When is the sunrise / sunset in August in Butler?

In August, on the first day of the month, sunrise is at 5:59 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:29 pm CDT.

How long on average sun shines in August?

In August, the average sunshine duration is 9.8h.

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

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

How high is the UV index in August in Butler?

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Butler, IL

Average temperature in August - Butler, IL
  • Average high temperature in August: 82.6°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in August
Butler, IL

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Butler, IL

Average wind speed in August - Butler, IL
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

Average humidity in August
Butler, IL

Average humidity in August - Butler, IL
  • Average humidity in August: 81%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Butler, IL

Average rainfall in August - Butler, IL
  • Average rainfall in August: 2.36"

The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is February (1.34").

Average rainfall days in August
Butler, IL

Average rainfall days in August - Butler, IL
  • Average rainfall days in August: 12.3 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7 days).

Average snowfall in August
Butler, IL

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

The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Butler, IL

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

The month with the highest number of snowfall days is January (6.2 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
Butler, IL

Average daylight in August / Average sunshine in August - Butler, IL
  • 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 30min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in August
Butler, IL

Average sunshine days in August - Butler, IL
  • Average sunshine days in August: 15.5 days

The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in August
Butler, IL

Average UV index in August - Butler, 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
Butler, IL

Average cloud cover in August - Butler, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and September (Cloud cover 29).

Average visibility in August
Butler, IL

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

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

Butler, Illinois, USA

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