April weather forecastSouth Chicago Heights, IL
April
Weather in April
April is a refreshing spring month in South Chicago Heights, Illinois, with an average temperature varying between 42.1°F (5.6°C) and 57.4°F (14.1°C).Temperature
South Chicago Heights's April weather shows an increase in high-temperatures, moving from March's chilly 46°F (7.8°C) to a moderate 57.4°F (14.1°C). South Chicago Heights, in the month of April, anticipates a consistent average low-temperature of 42.1°F (5.6°C).Humidity
In April, the average relative humidity is 75%.Rainfall
In South Chicago Heights, during April, the rain falls for 17.3 days and regularly aggregates up to 3.86" (98mm) of precipitation. In South Chicago Heights, during the entire year, the rain falls for 167.4 days and collects up to 35" (889mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 2.1 snowfall days, in April, South Chicago Heights aggregates 2.17" (55mm) of snow. Throughout the year, there are 47.8 snowfall days, and 20.04" (509mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 22min.On the first day of April, sunrise is at 6:32 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 7:47 pm CDT.
Sunshine
In South Chicago Heights, the average sunshine in April is 7.6h.UV index
In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The UV index of 3 during April translates into the following guidance:
Ensure safety - Recommendations to avert sunburn are presented. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
South Chicago Heights, IL
- Average high temperature in April: 57.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in April: 42.1°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in April
South Chicago Heights, 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
South Chicago Heights, IL
- Average wind speed in April: 9.7mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in April
South Chicago Heights, IL
- Average humidity in April: 75%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in April
South Chicago Heights, IL
- Average rainfall in April: 3.86"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in April
South Chicago Heights, IL
- Average rainfall days in April: 17.3 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in April
South Chicago Heights, IL
- Average snowfall in April: 2.17"
The month with the highest snowfall is February (5.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
South Chicago Heights, IL
- Average snowfall days in April: 2.1 days
The month with the highest number of snowfall days is January (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
South Chicago Heights, IL
- Average daylight in April: 13h and 24min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 7h and 36min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in April
South Chicago Heights, IL
- Average sunshine days in April: 9.6 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in April
South Chicago Heights, IL
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
South Chicago Heights, IL
- Average cloud cover in April: 49
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in April
South Chicago Heights, IL
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
