August weather forecast
Bismarck, IL

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Weather in August

The last month of the summer, August, is another warm month in Bismarck, Illinois, with an average temperature fluctuating between 80.6°F (27°C) and 63.3°F (17.4°C).

Temperature

The arrival of August records an average high-temperature of a still moderately hot 80.6°F (27°C), closely related to the 81.3°F (27.4°C) observed in July. An average low-temperature of 63.3°F (17.4°C) is noted during the nights in August.

Heat index

The heat index value during August is appraised at a tropical 86°F (30°C). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.
Heat index evaluations are typically in the context of light winds and shaded environments. 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 'apparent temperature' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

The average relative humidity in August in Bismarck is 83%.

Rainfall

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

In August, the average length of the day is 13h and 43min.
On the first day of the month, sunrise is at 5:48 am and sunset at 8:04 pm. On the last day of August, in Bismarck, sunrise is at 6:17 am and sunset at 7:23 pm CDT.

Sunshine

The average sunshine in August 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 value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In August, the maximum UV index of 6 suggests this advice:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

What are the temperatures in Bismarck in August?

The high-temperature, in August, in Bismarck, 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', 'real feel'), which factors the actual air temperature with the relative humidity, in August is appraised at 86°F (30°C).

What is the average humidity in August in Bismarck?

The average relative humidity in August in Bismarck, Illinois, is 83%.

How much does it rain in Bismarck in August?

In Bismarck, Illinois, in August, during 14.6 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.

When it does not snow in Bismarck?

May through October are months without snowfall.

How many hours of daylight does Bismarck have in August?

In August, the average day length is 13h and 43min.

What time are sunrise and sunset in August in Bismarck?

On the first day of August, sunrise is at 5:48 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:23 pm CDT.

How many hours of sunshine does Bismarck have in August?

In August, the average sunshine duration in Bismarck is 9.9h.

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

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

What is the UV index intensity in August in Bismarck?

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

Average temperature in August - Bismarck, 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).

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Average pressure in August
Bismarck, IL

Average pressure in August - Bismarck, 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).

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Average wind speed in August
Bismarck, IL

Average wind speed in August - Bismarck, 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).

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Average humidity in August
Bismarck, IL

Average humidity in August - Bismarck, 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%).

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Average rainfall in August
Bismarck, IL

Average rainfall in August - Bismarck, 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").

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Average rainfall days in August
Bismarck, IL

Average rainfall days in August - Bismarck, 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).

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Average snowfall in August
Bismarck, IL

Average snowfall in August - Bismarck, 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").

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Average snowfall days in August
Bismarck, IL

Average snowfall days in August - Bismarck, 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).

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

Average daylight in August / Average sunshine in August - Bismarck, 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).

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Average sunshine days in August
Bismarck, IL

Average sunshine days in August - Bismarck, 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).

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Average UV index in August
Bismarck, IL

Average UV index in August - Bismarck, 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).

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Average cloud cover in August
Bismarck, IL

Average cloud cover in August - Bismarck, 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).

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Average visibility in August
Bismarck, IL

Average visibility in August - Bismarck, 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).

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Bismarck, Illinois, USA

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