April weather forecastTrenton, IL
April
Weather in April
April in Trenton, Illinois, is a comfortable spring month, with an average temperature varying between 47.7°F (8.7°C) and 64.9°F (18.3°C).Temperature
With the onset of April, Trenton's weather sees a temperature rise, transitioning from a fresh 54.1°F (12.3°C) in March to a comfortable 64.9°F (18.3°C). Trenton throughout April, experiences an average nighttime temperature of 47.7°F (8.7°C).Humidity
In Trenton, the average relative humidity in April is 77%.Rainfall
In Trenton, during April, the rain falls for 14.9 days and regularly aggregates up to 3.43" (87mm) of precipitation. In Trenton, during the entire year, the rain falls for 151.1 days and collects up to 30.43" (773mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows. During 0.3 snowfall days, in April, Trenton aggregates 0.04" (1mm) of snow. Throughout the year, there are 22.4 snowfall days, and 6.1" (155mm) of snow is accumulated.Daylight
In Trenton, the average length of the day in April is 13h and 14min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:22 pm. On the last day of April, sunrise is at 6:01 am and sunset at 7:50 pm CDT.
Sunshine
The average sunshine in April is 8.4h.UV index
In Trenton, the average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In April, the maximum UV index of 4 suggests this advice:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Trenton, IL
- Average high temperature in April: 64.9°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in April: 47.7°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in April
Trenton, IL
- Average pressure in April: 29.94"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 April
Trenton, IL
- Average wind speed in April: 9.2mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in April
Trenton, IL
- Average humidity in April: 77%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Trenton, IL
- Average rainfall in April: 3.43"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is February (1.5").
Average rainfall days in April
Trenton, IL
- Average rainfall days in April: 14.9 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8 days).
Average snowfall in April
Trenton, IL
- Average snowfall in April: 0.04"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Trenton, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (7.5 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
Trenton, IL
- Average daylight in April: 13h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in April
Trenton, IL
- Average sunshine days in April: 13 days
The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (11 days).
Average UV index in April
Trenton, IL
- Average UV index in April: 4
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 April
Trenton, IL
- Average cloud cover in April: 42
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in April
Trenton, 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).
