August weather forecast
Andalusia, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Andalusia, Illinois, with an average temperature ranging between min 63.1°F (17.3°C) and max 80.8°F (27.1°C).

Temperature

As July transitions into August, Andalusia records an average high-temperature of a still warm 80.8°F (27.1°C), showing a gentle shift from the preceding month. Throughout August, Andalusia's nights cool down to an average of 63.1°F (17.3°C).

Heat index

August's mean heat index is evaluated at a hot 86°F (30°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

In August, the average relative humidity is 80%.

Rainfall

In Andalusia, Illinois, in August, during 12.3 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In Andalusia, during the entire year, the rain falls for 128 days and collects up to 19.29" (490mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August is 13h and 47min.
On the first day of August in Andalusia, Illinois, sunrise is at 5:58 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:37 pm CDT.

Sunshine

The average sunshine in August is 9.9h.

UV index

In August, the average daily maximum UV index in Andalusia is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In August, a daily maximum UV index of 5 leads to the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. To guard against the harmful effects of the Sun, minimize exposure during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures in Andalusia?

In August, in Andalusia, the average high-temperature is 80.8°F (27.1°C), and the average low-temperature is 63.1°F (17.3°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is evaluated at 86°F (30°C).

What is the average humidity in August in Andalusia?

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

How much does it rain in Andalusia in August?

In Andalusia, Illinois, in August, during 12.3 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

When it does not snow in Andalusia?

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

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

In Andalusia, the average day length in August is 13h and 47min.

When are sunrise and sunset in August in Andalusia?

On the first day of August in Andalusia, sunrise is at 5:58 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:37 pm CDT.

How long on average sun shines in August in Andalusia?

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

What is the UV index reading in August in Andalusia?

The average daily maximum UV index in August in Andalusia is 5. A UV Index reading of 3 to 5 represents a moderate health threat 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
Andalusia, IL

Average temperature in August - Andalusia, IL
  • Average high temperature in August: 80.8°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

Average pressure in August
Andalusia, IL

Average pressure in August - Andalusia, 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 (29.9"Hg).

Average wind speed in August
Andalusia, IL

Average wind speed in August - Andalusia, IL
  • Average wind speed in August: 6.7mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

Average humidity in August
Andalusia, IL

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

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

Average rainfall in August
Andalusia, IL

Average rainfall in August - Andalusia, IL
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is December (0.75").

Average rainfall days in August
Andalusia, IL

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

The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is January (4.2 days).

Average snowfall in August
Andalusia, IL

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

The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Andalusia, IL

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

The month with the highest number of snowfall days is January (10.3 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
Andalusia, IL

Average daylight in August / Average sunshine in August - Andalusia, IL
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in August
Andalusia, IL

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

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.8 days).

Average UV index in August
Andalusia, IL

Average UV index in August - Andalusia, IL
  • Average UV index in August: 5

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in August
Andalusia, IL

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

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in August
Andalusia, IL

Average visibility in August - Andalusia, 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).

Andalusia, Illinois, USA

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