Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The arrival of April signals an increase in the average high-temperature, moving from a cool 54.1°F (12.3°C) in March to a comfortable 64.9°F (18.3°C). Trenton cools down to an average low-temperature of 47.7°F (8.7°C) throughout the month of April.Humidity
In April, the average relative humidity is 77%.Rainfall
In Trenton, in April, it is raining for 14.9 days, with typically 3.43" (87mm) of accumulated precipitation. In Trenton, Illinois, during the entire year, the rain falls for 151.1 days and collects up to 30.43" (773mm) of precipitation.Snowfall
Months with snowfall in Trenton are January through April, October through December. 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
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, in Trenton, sunrise is at 6:01 am and sunset at 7:50 pm CDT.
Sunshine
In April, the average sunshine in Trenton is 8.4h.UV index
In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In April, a regular UV index of 4 translates into these guidelines:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Always opt for UVA and UVB-resistant sunglasses on radiant days. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
What are April temperatures in Trenton?
What is the average humidity in April in Trenton?
How much does it rain in Trenton in April?
What is the last month it snows in Trenton?
What is the average length of the day in April in Trenton?
When is the sunrise / sunset in April in Trenton?
How long on average sun shines in April in Trenton?
What is the UV index reading in April in Trenton?
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 1min
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 2min
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).
Trenton, Illinois, USA
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