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
April's arrival signals a temperature shift, moving from a cool 51.4°F (10.8°C) in March to a comfortable 62.4°F (16.9°C). During April nights, Dennison records an average temperature of 46°F (7.8°C).Humidity
In Dennison, the average relative humidity in April is 77%.Rainfall
April is the month with the most rainfall. Rain falls for 16 days and accumulates 4.96" (126mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.5 snowfall days, in April, Dennison aggregates 0.16" (4mm) of snow. In Dennison, during the entire year, snow falls for 24.7 days and aggregates up to 8.66" (220mm) of snow.Daylight
In Dennison, the average length of the day in April is 13h and 16min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:14 pm. On the last day of April, sunrise is at 5:51 am and sunset at 7:43 pm CDT.
Sunshine
In Dennison, the average sunshine in April is 6.9h.UV index
The average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 4 in April translates into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the average humidity in April?
What is the wettest month?
How much does it rain in Dennison in April?
What is the last month it snows?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Dennison have in April?
What is the UV index intensity in April?
Average temperature in April
Dennison, IL
- Average high temperature in April: 62.4°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in April: 46°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in April
Dennison, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Dennison, IL
- Average wind speed in April: 9.9mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in April
Dennison, IL
- Average humidity in April: 77%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Dennison, IL
- Average rainfall in April: 4.96"
The wettest month (with the highest rainfall) is April (4.96").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in April
Dennison, IL
- Average rainfall days in April: 16 days
The month with the highest number of rainy days is May (20.6 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in April
Dennison, IL
- Average snowfall in April: 0.16"
The month with the highest snowfall is January (2.56").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Dennison, IL
- Average snowfall days in April: 0.5 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Dennison, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in April: 6h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 4h and 18min).
Average sunshine days in April
Dennison, IL
- Average sunshine days in April: 12.2 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (7.9 days).
Average UV index in April
Dennison, IL
- Average UV index in April: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in April
Dennison, IL
- Average cloud cover in April: 45
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility in April
Dennison, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Dennison, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location