April weather forecastSilvis, IL
April
Weather in April
April is a moderate spring month in Silvis, Illinois, with an average temperature ranging between min 42.4°F (5.8°C) and max 59°F (15°C).Temperature
In Silvis, the average high-temperature in April rises, from a frosty 46.8°F (8.2°C) in March, to a moderate 59°F (15°C). The average low-temperature, in April, is an icy 42.4°F (5.8°C).Humidity
In Silvis, the average relative humidity in April is 74%.Rainfall
In Silvis, during April, the rain falls for 11.8 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, there are 99.4 rainfall days, and 9.57" (243mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September through December. April is the last month it regularly snows. During 0.8 snowfall days, in April, Silvis aggregates 0.28" (7mm) of snow. Throughout the year, there are 24.5 snowfall days, and 4.09" (104mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 22min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:27 pm. On the last day of April, sunrise is at 5:58 am and sunset at 7:58 pm CDT.
Sunshine
The average sunshine in April is 7.6h.UV index
In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: During April, 4 as the daily maximum UV index converts into the following advice:
Take necessary precautions - Defending against sun damage is advocated. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Boost your sun resistance with garments that are densely woven yet spacious. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Silvis, IL
- Average high temperature in April: 59°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 April: 42.4°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).
Average pressure in April
Silvis, IL
- Average pressure in April: 29.93"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).
Average wind speed in April
Silvis, IL
- Average wind speed in April: 10.6mph
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 April
Silvis, IL
- Average humidity in April: 74%
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 April
Silvis, IL
- Average rainfall in April: 1.02"
The wettest month (with the highest rainfall) is May (1.61").
The driest month (with the least rainfall) is December (0.35").
Average rainfall days in April
Silvis, IL
- Average rainfall days in April: 11.8 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).
Average snowfall in April
Silvis, IL
- Average snowfall in April: 0.28"
The month with the highest snowfall is January (1.26").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in April
Silvis, IL
- Average snowfall days in April: 0.8 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).
Average daylight in April /
Average sunshine in April
Silvis, IL
- Average daylight in April: 13h and 24min
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 April: 7h and 36min
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).
Average sunshine days in April
Silvis, IL
- Average sunshine days in April: 16.7 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).
Average UV index in April
Silvis, IL
- Average UV index in April: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in April
Silvis, IL
- Average cloud cover in April: 49
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in April
Silvis, IL
- Average visibility in April: 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).
