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
With the onset of April, the average high-temperature slightly shifts from March's frosty 43.7°F (6.5°C) to a fresh 54.1°F (12.3°C). The average nighttime temperature in Summit lowers to a wintry 40.8°F (4.9°C) throughout April.Humidity
The average relative humidity in April in Summit is 75%.Rainfall
In Summit, during April, the rain falls for 12 days and regularly aggregates up to 0.91" (23mm) of precipitation. In Summit, during the entire year, the rain falls for 110.8 days and collects up to 9.61" (244mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows in Summit. During 1.3 snowfall days, in April, Summit aggregates 0.43" (11mm) of snow. Throughout the year, there are 32.3 snowfall days, and 4.09" (104mm) of snow is accumulated.Daylight
In Summit, Illinois, the average length of the day in April is 13h and 22min.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 in Summit is 7.8h.UV index
In Summit, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 3 during April leads to these instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Summit in April?
What is the average humidity in April in Summit?
How much does it rain in Summit in April?
What is the last month it snows in Summit?
What is the average length of the day in April in Summit?
When are sunrise and sunset in April in Summit?
How long on average sun shines in April in Summit?
What is the UV index reading in April in Summit?
Average temperature in April
Summit, IL
- Average high temperature in April: 54.1°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in April: 40.8°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in April
Summit, 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
Summit, IL
- Average wind speed in April: 10.1mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in April
Summit, IL
- Average humidity in April: 75%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Summit, IL
- Average rainfall in April: 0.91"
The wettest month (with the highest rainfall) is May (1.38").
The driest month (with the least rainfall) is December (0.43").
Average rainfall days in April
Summit, IL
- Average rainfall days in April: 12 days
The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in April
Summit, IL
- Average snowfall in April: 0.43"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Summit, IL
- Average snowfall days in April: 1.3 days
The month with the highest number of snowfall days is January (10.1 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
Summit, 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
Summit, IL
- Average sunshine days in April: 15.8 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in April
Summit, IL
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Summit, IL
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in April
Summit, 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).
Summit, Illinois, USA
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