April weather forecastMarissa, IL
April
Weather in April
April is a comfortable spring month in Marissa, Illinois, with an average temperature varying between 65.7°F (18.7°C) and 47.8°F (8.8°C).Temperature
April's arrival coincides with a rise in the average high-temperature, moving from March's fresh 54.5°F (12.5°C) to a refreshing 65.7°F (18.7°C). Marissa encounters an average low-temperature of 47.8°F (8.8°C) during April nights.Humidity
The average relative humidity in April is 77%.Rainfall
In Marissa, during April, the rain falls for 12.6 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, there are 129.6 rainfall days, and 19.09" (485mm) of precipitation is accumulated.Snowfall
April through August are months without snowfall in Marissa.Daylight
The average length of the day in April is 13h and 13min.On the first day of April in Marissa, sunrise is at 6:42 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 7:49 pm CDT.
Sunshine
The average sunshine in April is 8.6h.UV index
In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: During April, 4 as the daily maximum UV index converts into the following advice:
Ensure safety - Sun damage prevention is strongly urged. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Marissa, IL
- Average high temperature in April: 65.7°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in April: 47.8°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in April
Marissa, 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
Marissa, IL
- Average wind speed in April: 9mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity in April
Marissa, IL
- Average humidity in April: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Marissa, IL
- Average rainfall in April: 2.05"
The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in April
Marissa, IL
- Average rainfall days in April: 12.6 days
The month with the highest number of rainy days is July (15.1 days).
The months with the least rainy days are January and December (6.5 days).
Average snowfall in April
Marissa, IL
- Average snowfall in April: 0"
The month with the highest snowfall is January (1.06").
The months with the least snowfall are April, May, June, July and August (0").
Average snowfall days in April
Marissa, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Marissa, 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 36min).
- Average sunshine in April: 8h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in April
Marissa, IL
- Average sunshine days in April: 16 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is July (13.7 days).
Average UV index in April
Marissa, 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
Marissa, IL
- Average cloud cover in April: 41
The months with the most cloud cover are January and February (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility in April
Marissa, 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).





