August weather forecast
Waverly, IL

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Weather in August

The last month of the summer, August, is another warm month in Waverly, Illinois, with an average temperature varying between 64.8°F (18.2°C) and 82°F (27.8°C).

Temperature

At the onset of August, Waverly records an average high-temperature of a still warm 82°F (27.8°C), showing little deviation from the preceding month. The mean low-temperature during August nights is an enjoyable 64.8°F (18.2°C).

Heat index

August's average heat index is computed to be a hot 89.6°F (32°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.

Humidity

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

Rainfall

In Waverly, during August, the rain falls for 12.9 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Waverly, during the entire year, the rain falls for 126.6 days and collects up to 17.95" (456mm) of precipitation.

Snowfall

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

Daylight

In Waverly, the average length of the day in August is 13h and 41min.
On the first day of August, sunrise is at 5:59 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:31 pm CDT.

Sunshine

In August, the average sunshine is 9.8h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Waverly. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: An average maximum UV index of 6 in August leads to these recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature in Waverly?

Waverly in August has an average high-temperature of 82°F (27.8°C) and an average low-temperature of 64.8°F (18.2°C). The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in August is computed to be 89.6°F (32°C).

What is the average humidity in August in Waverly?

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

How many days does it rain in August in Waverly?

In Waverly, during August, the rain falls for 12.9 days and regularly aggregates up to 1.65" (42mm) of precipitation.

When it does not snow in Waverly?

May through October are months without snowfall in Waverly, Illinois.

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

In August, the average day length in Waverly is 13h and 41min.

What time are sunrise and sunset in August in Waverly?

In August, on the first day of the month, sunrise is at 5:59 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:31 pm CDT.

How long on average sun shines in August in Waverly?

The average sunshine duration in August in Waverly is 9.8h.

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

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

What is the UV index reading in August in Waverly?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health risk 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
Waverly, IL

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

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in August: 64.8°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

Average pressure in August
Waverly, IL

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
Waverly, IL

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

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

Average humidity in August
Waverly, IL

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

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

Average rainfall in August
Waverly, IL

Average rainfall in August - Waverly, IL
  • Average rainfall in August: 1.65"

The wettest month (with the highest rainfall) is June (2.36").
The driest months (with the least rainfall) are February and December (0.79").

Average rainfall days in August
Waverly, IL

Average rainfall days in August - Waverly, IL
  • Average rainfall days in August: 12.9 days

The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (5.2 days).

Average snowfall in August
Waverly, IL

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

The month with the highest snowfall is January (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Waverly, IL

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

The month with the highest number of snowfall days is January (7.6 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
Waverly, IL

Average daylight in August / Average sunshine in August - Waverly, 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 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 12min).

Average sunshine days in August
Waverly, IL

Average sunshine days in August - Waverly, IL
  • Average sunshine days in August: 15.7 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is July (12.9 days).

Average UV index in August
Waverly, IL

Average UV index in August - Waverly, 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
Waverly, IL

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

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 30).

Average visibility in August
Waverly, IL

Average visibility in August - Waverly, 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).

Waverly, Illinois, USA

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