April weather forecastByron, IL
April
Weather in April
April is a mild spring month in Byron, Illinois, with an average temperature varying between 39.7°F (4.3°C) and 56.3°F (13.5°C).Temperature
April's arrival coincides with a temperature rise, moving from March's chilly 44.2°F (6.8°C) to a refreshing 56.3°F (13.5°C). During April, the average low-temperature is recorded at a wintry 39.7°F (4.3°C).Humidity
April and October, with an average relative humidity of 75%, are the least humid months.Rainfall
In April, the rain falls for 11.1 days. Throughout April, 0.91" (23mm) of precipitation is accumulated. Throughout the year, there are 100.6 rainfall days, and 7.99" (203mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 1.1 snowfall days, in April, Byron aggregates 0.12" (3mm) of snow. Throughout the year, there are 29.5 snowfall days, and 3.66" (93mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 23min.On the first day of April in Byron, 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 April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 3 in April translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in April /
Average sunshine in April
Byron, IL
- Average daylight in April: 13h and 24min
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 30min
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).
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).
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).
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).
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).
