August weather forecast
Pomona, IL

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Weather in August

August, the last month of the summer in Pomona, is another warm month, with an average temperature fluctuating between 66.4°F (19.1°C) and 85.8°F (29.9°C).

Temperature

The beginning of August records an average high-temperature of a moderately hot 85.8°F (29.9°C), almost echoing the conditions of the previous month. Pomona experiences a mean low-temperature of 66.4°F (19.1°C) during August.

Heat index

August's average heat index is evaluated at a torrid 96.8°F (36°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In August, the average relative humidity is 76%.

Rainfall

In Pomona, in August, it is raining for 13.9 days, with typically 2.8" (71mm) of accumulated precipitation. In Pomona, during the entire year, the rain falls for 158.6 days and collects up to 34.69" (881mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Pomona, the average length of the day in August is 13h and 34min.
On the first day of August in Pomona, sunrise is at 6:01 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:27 pm CDT.

Sunshine

In August, the average sunshine is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Pomona, Illinois. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In August, the maximum UV index of 6 suggests this advice:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Pomona in August?

The high-temperature in Pomona, Illinois, during August is 85.8°F (29.9°C) and the low-temperature is 66.4°F (19.1°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 96.8°F (36°C).

What is the average humidity in August in Pomona?

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

How many days does it rain in August in Pomona?

In Pomona, Illinois, in August, during 13.9 rainfall days, 2.8" (71mm) of precipitation is typically accumulated.

When it does not snow in Pomona?

May through September are months without snowfall in Pomona.

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

The average day length in August in Pomona is 13h and 34min.

What time are sunrise and sunset in August in Pomona?

On the first day of August, sunrise is at 6:01 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:27 pm CDT.

How long on average sun shines in August in Pomona?

In Pomona, Illinois, the average sunshine duration in August is 10.3h.

When is the highest UV index in Pomona?

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

How high is the UV index in August in Pomona?

In August, the average daily maximum UV index in Pomona, Illinois, is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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
Pomona, IL

Average temperature in August - Pomona, IL
  • Average high temperature in August: 85.8°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in August: 66.4°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure in August
Pomona, IL

Average pressure in August - Pomona, 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 (29.93"Hg).

Average wind speed in August
Pomona, IL

Average wind speed in August - Pomona, IL
  • Average wind speed in August: 5.6mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in August
Pomona, IL

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

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Pomona, IL

Average rainfall in August - Pomona, IL
  • Average rainfall in August: 2.8"

The wettest month (with the highest rainfall) is April (4.49").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in August
Pomona, IL

Average rainfall days in August - Pomona, IL
  • Average rainfall days in August: 13.9 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in August
Pomona, IL

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

The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Pomona, IL

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

The months with the highest number of snowfall days are January and February (4.8 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
Pomona, IL

Average daylight in August / Average sunshine in August - Pomona, IL
  • Average daylight in August: 13h and 4min

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 36min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in August
Pomona, IL

Average sunshine days in August - Pomona, IL
  • Average sunshine days in August: 14.2 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (11.3 days).

Average UV index in August
Pomona, IL

Average UV index in August - Pomona, 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, November and December (UV index 2).

Average cloud cover in August
Pomona, IL

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

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 27).

Average visibility in August
Pomona, IL

Average visibility in August - Pomona, 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).

Pomona, Illinois, USA

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