April weather forecastStonington, IL
April
Weather in April
April is a comfortable spring month in Stonington, Illinois, with an average temperature varying between 46.2°F (7.9°C) and 63.1°F (17.3°C).Temperature
As Stonington transitions into April, a rise in the average high-temperature is observed, moving from a cool 51.4°F (10.8°C) in March to a refreshing 63.1°F (17.3°C). The month of April records an average low-temperature of 46.2°F (7.9°C).Humidity
The average relative humidity in April is 75%.Rainfall
The month with the most rainfall in Stonington is April, when the rain falls for 15.3 days and typically aggregates up to 3.58" (91mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows. During 0.7 snowfall days, in April, Stonington aggregates 0.08" (2mm) of snow. In Stonington, during the entire year, snow falls for 26.3 days and aggregates up to 8.94" (227mm) of snow.Daylight
The average length of the day in April in Stonington is 13h and 17min.On the first day of April, sunrise is at 6:39 am and sunset at 7:21 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 7:50 pm CDT.
Sunshine
The average sunshine in April is 8h.UV index
In Stonington, Illinois, the average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In April, the maximum UV index of 4 transforms into these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Stonington, IL
- Average high temperature in April: 63.1°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in April: 46.2°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in April
Stonington, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Stonington, IL
- Average wind speed in April: 10.3mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in April
Stonington, IL
- Average humidity in April: 75%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Stonington, IL
- Average rainfall in April: 3.58"
The wettest month (with the highest rainfall) is April (3.58").
The driest months (with the least rainfall) are February and December (1.65").
Average rainfall days in April
Stonington, IL
- Average rainfall days in April: 15.3 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in April
Stonington, IL
- Average snowfall in April: 0.08"
The month with the highest snowfall is January (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Stonington, IL
- Average snowfall days in April: 0.7 days
The month with the highest number of snowfall days is January (8.8 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
Stonington, IL
- Average daylight in April: 13h and 18min
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: 8h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in April
Stonington, IL
- Average sunshine days in April: 13 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (11 days).
Average UV index in April
Stonington, 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, November and December (UV index 2).
Average cloud cover in April
Stonington, IL
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are June, August and September (Cloud cover 30).
Average visibility in April
Stonington, 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).
