August weather forecast
Olmsted, IL

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Weather in August

The last month of the summer, August, is also a hot month in Olmsted, Illinois, with an average temperature varying between 67.5°F (19.7°C) and 86.4°F (30.2°C).

Temperature

The shift into August reveals an average high-temperature of a still tropical 86.4°F (30.2°C), closely mirroring July's climate. An average low-temperature of 67.5°F (19.7°C) is noted during the nights in August in Olmsted.

Heat index

August's mean heat index is computed to be a torrid 98.6°F (37°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in August is 76%.

Rainfall

In August, the rain falls for 13.6 days. Throughout August, 2.72" (69mm) of precipitation is accumulated. Throughout the year, there are 156.3 rainfall days, and 36.65" (931mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Olmsted.

Daylight

In August, the average length of the day in Olmsted is 13h and 32min.
On the first day of the month, sunrise is at 6:01 am and sunset at 8:03 pm. On the last day of August, sunrise is at 6:26 am and sunset at 7:26 pm CDT.

Sunshine

In August, the average sunshine is 10.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Olmsted. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

How hot does it get in Olmsted in August?

In Olmsted, in August, the average high-temperature is 86.4°F (30.2°C), and the average low-temperature is 67.5°F (19.7°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in August is computed to be 98.6°F (37°C).

What is the average humidity in August in Olmsted?

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

How much does it rain in Olmsted in August?

In Olmsted, during August, the rain falls for 13.6 days and regularly aggregates up to 2.72" (69mm) of precipitation.

When it does not snow in Olmsted?

May through September are months without snowfall in Olmsted.

How many hours of daylight does Olmsted have in August?

The average day length in August in Olmsted, Illinois, is 13h and 32min.

What time are sunrise and sunset in August in Olmsted?

On the first day of August in Olmsted, Illinois, sunrise is at 6:01 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:26 pm CDT.

How long on average sun shines in August in Olmsted?

The average sunshine duration in August in Olmsted is 10.4h.

When is the highest UV index in Olmsted?

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

What is the UV index intensity in August in Olmsted?

In Olmsted, the average daily maximum UV index in August is 6. A UV Index estimate 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
Olmsted, IL

Average temperature in August - Olmsted, IL
  • Average high temperature in August: 86.4°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.2°F).

  • Average low temperature in August: 67.5°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in August
Olmsted, IL

Average pressure in August - Olmsted, 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 (29.94"Hg).

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Average wind speed in August
Olmsted, IL

Average wind speed in August - Olmsted, IL
  • Average wind speed in August: 5.7mph

The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in August
Olmsted, IL

Average humidity in August - Olmsted, IL
  • Average humidity in August: 76%

The months with the highest relative humidity are February, March, May and December (78%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in August
Olmsted, IL

Average rainfall in August - Olmsted, IL
  • Average rainfall in August: 2.72"

The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.42").

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Average rainfall days in August
Olmsted, IL

Average rainfall days in August - Olmsted, IL
  • Average rainfall days in August: 13.6 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.8 days).

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Average snowfall in August
Olmsted, IL

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

The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Olmsted, IL

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

The month with the highest number of snowfall days is February (3.8 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
Olmsted, IL

Average daylight in August / Average sunshine in August - Olmsted, IL
  • Average daylight in August: 13h and 3min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in August
Olmsted, IL

Average sunshine days in August - Olmsted, IL
  • Average sunshine days in August: 15.1 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (12.3 days).

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Average UV index in August
Olmsted, IL

Average UV index in August - Olmsted, IL
  • Average UV index in August: 6

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

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Average cloud cover in August
Olmsted, IL

Average cloud cover in August - Olmsted, IL
  • Average cloud cover in August: 27

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).

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Average visibility in August
Olmsted, IL

Average visibility in August - Olmsted, IL
  • Average visibility in August: 6mi

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

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Olmsted, Illinois, USA

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