April weather forecast
Byron, IL

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Weather in April

April is a refreshing spring month in Byron, Illinois, with an average temperature fluctuating between 56.3°F (13.5°C) and 39.7°F (4.3°C).

Temperature

April marks a rise in the average high-temperature, moving from March's frosty 44.2°F (6.8°C) to a refreshing 56.3°F (13.5°C). In Byron, in April, the average low-temperature is a cold 39.7°F (4.3°C).

Humidity

The months with the lowest humidity are April and October, with an average relative humidity of 75%.

Rainfall

In Byron, during April, the rain falls for 11.1 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, in Byron, Illinois, there are 100.6 rainfall days, and 7.99" (203mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. April is the last month it regularly snows. During 1.1 snowfall days, in April, Byron aggregates 0.12" (3mm) of snow. In Byron, during the entire year, snow falls for 29.5 days and aggregates up to 3.66" (93mm) of snow.

Daylight

In April, the average length of the day is 13h and 23min.
On the first day of April, sunrise is at 6:38 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 7:55 pm CDT.

Sunshine

In April, the average sunshine is 7.5h.

UV index

In Byron, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 3 during April translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the average April temperature in Byron?

In April, in Byron, the average high-temperature is 56.3°F (13.5°C), and the average low-temperature is 39.7°F (4.3°C).

What is the least humid month in Byron?

The months with the lowest humidity in Byron are April and October, with an average relative humidity of 75%.

What is the average humidity in April in Byron?

In Byron, the average relative humidity in April is 75%.

How many days does it rain in April in Byron?

In Byron, in April, during 11.1 rainfall days, 0.91" (23mm) of precipitation is typically accumulated.

What is the last month it snows in Byron?

April is the last month it regularly snows in Byron. During 1.1 snowfall days, in April, Byron aggregates 0.12" (3mm) of snow.

How many hours of daylight does Byron have in April?

The average day length in April in Byron, Illinois, is 13h and 23min.

When is the sunrise / sunset in April in Byron?

In April, on the first day of the month, sunrise is at 6:38 am and sunset at 7:23 pm. On the last day of the month, in Byron, Illinois, sunrise is at 5:52 am and sunset at 7:55 pm CDT.

How many hours of sunshine does Byron have in April?

The average sunshine duration in April is 7.5h.

What is the UV index reading in April in Byron?

In April, the average daily maximum UV index in Byron, Illinois, is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's 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 April
Byron, IL

Average temperature in April - Byron, IL
  • Average high temperature in April: 56.3°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (26.2°F).

  • Average low temperature in April: 39.7°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14°F).

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Average pressure in April
Byron, IL

Average pressure in April - Byron, IL
  • Average pressure in April: 29.95"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in April
Byron, IL

Average wind speed in April - Byron, IL
  • Average wind speed in April: 10.2mph

The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in April
Byron, IL

Average humidity in April - Byron, IL
  • Average humidity in April: 75%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (75%).

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Average rainfall in April
Byron, IL

Average rainfall in April - Byron, IL
  • Average rainfall in April: 0.91"

The wettest month (with the highest rainfall) is May (1.18").
The driest months (with the least rainfall) are January and February (0.35").

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Average rainfall days in April
Byron, IL

Average rainfall days in April - Byron, IL
  • Average rainfall days in April: 11.1 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (3.2 days).

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Average snowfall in April
Byron, IL

Average snowfall in April - Byron, IL
  • Average snowfall in April: 0.12"

The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Byron, IL

Average snowfall days in April - Byron, IL
  • Average snowfall days in April: 1.1 days

The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in April /
Average sunshine in April
Byron, IL

Average daylight in April / Average sunshine in April - Byron, IL
  • Average daylight in April: 13h and 2min

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

  • Average sunshine in April: 7h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in April
Byron, IL

Average sunshine days in April - Byron, IL
  • Average sunshine days in April: 16.8 days

The month with the most sunshine days is December (22.6 days).
The month with the least sunshine days is June (12.8 days).

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Average UV index in April
Byron, IL

Average UV index in April - Byron, IL
  • Average UV index in April: 3

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

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Average cloud cover in April
Byron, IL

Average cloud cover in April - Byron, IL
  • Average cloud cover in April: 50

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 33).

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Average visibility in April
Byron, IL

Average visibility in April - Byron, IL
  • Average visibility in April: 6mi

The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).

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Byron, Illinois, USA

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