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
As River Forest transitions into April, a rise in the average high-temperature is observed, moving from a chilly 43.2°F (6.2°C) in March to a cool 53.2°F (11.8°C). River Forest records a mean low-temperature of 40.5°F (4.7°C) in April.Humidity
The average relative humidity in April in River Forest is 75%.Rainfall
In River Forest, in April, during 16.8 rainfall days, 3.62" (92mm) of precipitation is typically accumulated. Throughout the year, in River Forest, there are 157.8 rainfall days, and 33.7" (856mm) of precipitation is accumulated.Snowfall
Months with snowfall in River Forest, Illinois, are January through May, October through December. In River Forest, Illinois, in April, snow falls for 1.8 days, with typically accumulated 1.97" (50mm) of snow. In River Forest, during the entire year, snow falls for 40.3 days and aggregates up to 16.81" (427mm) of snow.Daylight
In River Forest, the average length of the day in April is 13h and 23min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:17 pm. On the last day of April, sunrise is at 5:47 am and sunset at 7:49 pm CDT.
Sunshine
The average sunshine in April is 7.8h.UV index
In River Forest, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 3 during April translates into the following directions:
Take necessary precautions - Protection from skin and eye injury is mandatory. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
What are April temperatures in River Forest?
What is the average humidity in April in River Forest?
How many days does it rain in April in River Forest?
How many days does it snow in April in River Forest?
What is the average length of the day in April in River Forest?
What time are sunrise and sunset in April in River Forest?
How long on average sun shines in April in River Forest?
What is the UV index reading in April in River Forest?
Average temperature in April
River Forest, IL
- Average high temperature in April: 53.2°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in April: 40.5°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in April
River Forest, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
River Forest, IL
- Average wind speed in April: 10.3mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in April
River Forest, IL
- Average humidity in April: 75%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
River Forest, IL
- Average rainfall in April: 3.62"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is December (1.57").
Average rainfall days in April
River Forest, IL
- Average rainfall days in April: 16.8 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in April
River Forest, IL
- Average snowfall in April: 1.97"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
River Forest, IL
- Average snowfall days in April: 1.8 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
River Forest, IL
- Average daylight in April: 13h and 2min
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 5min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
River Forest, IL
- Average sunshine days in April: 10.2 days
The month with the most sunshine days is December (16.7 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in April
River Forest, IL
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
River Forest, IL
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in April
River Forest, 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).
River Forest, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
