August weather forecast
Topeka, IL

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Weather in August

August, the last month of the summer in Topeka, is another warm month, with an average temperature varying between 64°F (17.8°C) and 82°F (27.8°C).

Temperature

August is marked by an average high-temperature of a still warm 82°F (27.8°C), almost identical to the preceding month. Nighttime temperatures in Topeka, Illinois, hover around an average low of 64°F (17.8°C) in August.

Heat index

The average heat index in August is evaluated at a tropical 89.6°F (32°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.
Heat index readings emphasize conditions of light breezes and shaded spots. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

In Topeka, Illinois, the average relative humidity in August is 80%.

Rainfall

In Topeka, Illinois, in August, during 13.1 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, there are 142.9 rainfall days, and 28.31" (719mm) of precipitation is accumulated.

Snowfall

In Topeka, snow does not fall in May through September.

Daylight

In August, the average length of the day is 13h and 43min.
On the first day of August, sunrise is at 5:58 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:32 pm CDT.

Sunshine

The average sunshine in August is 10h.

UV index

The months with the highest UV index in Topeka 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 unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 6 in August translates into these instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun 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

What is the average August temperature in Topeka?

The high-temperature, in August, in Topeka, records 82°F (27.8°C), while the low-temperature is 64°F (17.8°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 89.6°F (32°C).

What is the average humidity in August in Topeka?

The average relative humidity in August in Topeka is 80%.

How much does it rain in Topeka in August?

In Topeka, Illinois, in August, during 13.1 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When it does not snow in Topeka?

May through September are months without snowfall.

How many hours of daylight does Topeka have in August?

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

When is the sunrise / sunset in August in Topeka?

In August, on the first day of the month, sunrise is at 5:58 am and sunset at 8:13 pm. On the last day of the month, in Topeka, sunrise is at 6:26 am and sunset at 7:32 pm CDT.

How many hours of sunshine does Topeka have in August?

In August, the average sunshine duration in Topeka is 10h.

When is the highest UV index in Topeka?

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

What is the UV index intensity in August in Topeka?

The average daily maximum UV index in August in Topeka, Illinois, is 6. A UV Index reading of 6 to 7 represents a high health threat 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
Topeka, IL

Average temperature in August - Topeka, IL
  • Average high temperature in August: 82°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in August: 64°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in August
Topeka, IL

Average pressure in August - Topeka, IL
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Topeka, IL

Average wind speed in August - Topeka, IL
  • Average wind speed in August: 6.3mph

The windiest months (with the highest average wind speed) are January, February and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

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Average humidity in August
Topeka, IL

Average humidity in August - Topeka, IL
  • Average humidity in August: 80%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Topeka, IL

Average rainfall in August - Topeka, IL
  • Average rainfall in August: 2.09"

The wettest month (with the highest rainfall) is May (3.86").
The driest month (with the least rainfall) is December (1.38").

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Average rainfall days in August
Topeka, IL

Average rainfall days in August - Topeka, IL
  • Average rainfall days in August: 13.1 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.8 days).

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Average snowfall in August
Topeka, IL

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

The month with the highest snowfall is January (3.5").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Topeka, IL

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

The month with the highest number of snowfall days is January (9.2 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
Topeka, IL

Average daylight in August / Average sunshine in August - Topeka, 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: 10h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in August
Topeka, IL

Average sunshine days in August - Topeka, IL
  • Average sunshine days in August: 15.6 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.1 days).

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Average UV index in August
Topeka, IL

Average UV index in August - Topeka, 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
Topeka, IL

Average cloud cover in August - Topeka, IL
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July, August and September (Cloud cover 29).

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Average visibility in August
Topeka, IL

Average visibility in August - Topeka, 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).

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Topeka, Illinois, USA

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