August weather forecast
Port Byron, IL

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Weather in August

August, the last month of the summer in Port Byron, is also a moderately hot month, with an average temperature fluctuating between 80.6°F (27°C) and 62.4°F (16.9°C).

Temperature

In August, Port Byron's weather conditions record an average high-temperature of a still warm 80.6°F (27°C), demonstrating little divergence from the preceding month. August witnesses an average low-temperature hovering around a refreshing 62.4°F (16.9°C).

Heat index

August's heat index is appraised at a hot 86°F (30°C). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
When referencing the heat index, its values are suitable for shady environments and light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.

Humidity

In Port Byron, the average relative humidity in August is 80%.

Rainfall

In Port Byron, in August, during 10.7 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. In Port Byron, Illinois, during the entire year, the rain falls for 99.4 days and collects up to 9.57" (243mm) of precipitation.

Snowfall

In Port Byron, snow does not fall in May through August.

Daylight

In Port Byron, Illinois, the average length of the day in August is 13h and 48min.
On the first day of August in Port Byron, sunrise is at 5:56 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:35 pm CDT.

Sunshine

In August, the average sunshine in Port Byron, Illinois, is 9.9h.

UV index

In August, the average daily maximum UV index in Port Byron is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 in August interprets into the following advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

What is the average August temperature in Port Byron?

The average high-temperature and low-temperature in Port Byron during August are 80.6°F (27°C) and 62.4°F (16.9°C) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in August is appraised at 86°F (30°C).

What is the average humidity in August in Port Byron?

In August, the average relative humidity in Port Byron is 80%.

How much does it rain in Port Byron in August?

In Port Byron, in August, it is raining for 10.7 days, with typically 0.71" (18mm) of accumulated precipitation.

When it does not snow in Port Byron?

May through August are months without snowfall in Port Byron, Illinois.

Does it snow in Port Byron in August?

In Port Byron, in August, it doesn't snow. In September, it regularly snows.

What is the average length of the day in August in Port Byron?

The average day length in August is 13h and 48min.

When is the sunrise / sunset in August in Port Byron?

In August, on the first day of the month, sunrise is at 5:56 am and sunset at 8:18 pm. On the last day of the month, in Port Byron, sunrise is at 6:27 am and sunset at 7:35 pm CDT.

How many hours of sunshine does Port Byron have in August?

The average sunshine duration in August in Port Byron is 9.9h.

What is the UV index intensity in August in Port Byron?

The average daily maximum UV index in August in Port Byron, Illinois, is 5. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Port Byron, IL

Average temperature in August - Port Byron, IL
  • Average high temperature in August: 80.6°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: 62.4°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

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Average pressure in August
Port Byron, IL

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Port Byron, IL

Average wind speed in August - Port Byron, 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).

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Average humidity in August
Port Byron, IL

Average humidity in August - Port Byron, 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%).

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Average rainfall in August
Port Byron, IL

Average rainfall in August - Port Byron, IL
  • Average rainfall in August: 0.71"

The wettest month (with the highest rainfall) is May (1.61").
The driest month (with the least rainfall) is December (0.35").

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Average rainfall days in August
Port Byron, IL

Average rainfall days in August - Port Byron, IL
  • Average rainfall days in August: 10.7 days

The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is January (3.2 days).

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Average snowfall in August
Port Byron, IL

Average snowfall in August - Port Byron, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.26").
The months with the least snowfall are May, June, July and August (0").

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Average snowfall days in August
Port Byron, IL

Average snowfall days in August - Port Byron, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are May, June, July and August (0 days).

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Average daylight in August /
Average sunshine in August
Port Byron, IL

Average daylight in August / Average sunshine in August - Port Byron, 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 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in August
Port Byron, IL

Average sunshine days in August - Port Byron, IL
  • Average sunshine days in August: 17.4 days

The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is June (14.4 days).

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Average UV index in August
Port Byron, IL

Average UV index in August - Port Byron, IL
  • Average UV index in August: 5

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

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Average cloud cover in August
Port Byron, IL

Average cloud cover in August - Port Byron, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in August
Port Byron, IL

Average visibility in August - Port Byron, 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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Port Byron, Illinois, USA

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