April weather forecastGlen Carbon, IL
April
Weather in April
April is a refreshing spring month in Glen Carbon, Illinois, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 47.8°F (8.8°C).Temperature
As Glen Carbon transitions into April, the average high-temperature is observed to rise from a cool 54.1°F (12.3°C) in March to an enjoyable 64.9°F (18.3°C). Glen Carbon experiences a nighttime temperature average of 47.8°F (8.8°C) during April.Humidity
In April, the average relative humidity is 76%.Rainfall
In Glen Carbon, Illinois, during April, the rain falls for 15.4 days and regularly aggregates up to 3.5" (89mm) of precipitation. Throughout the year, in Glen Carbon, there are 149.9 rainfall days, and 33.94" (862mm) of precipitation is accumulated.Snowfall
In Glen Carbon, snow does not fall in April through August and October.Daylight
In Glen Carbon, the average length of the day in April is 13h and 14min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:23 pm. On the last day of April, sunrise is at 6:02 am and sunset at 7:51 pm CDT.
Sunshine
The average sunshine in April is 8.5h.UV index
In Glen Carbon, Illinois, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 4 in April suggests the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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
Glen Carbon, IL
- Average high temperature in April: 64.9°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in April: 47.8°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in April
Glen Carbon, 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 (29.92"Hg).
Average wind speed in April
Glen Carbon, IL
- Average wind speed in April: 9.1mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in April
Glen Carbon, IL
- Average humidity in April: 76%
The months with the highest relative humidity are May, July and August (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Glen Carbon, IL
- Average rainfall in April: 3.5"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days in April
Glen Carbon, IL
- Average rainfall days in April: 15.4 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in April
Glen Carbon, IL
- Average snowfall in April: 0"
The month with the highest snowfall is January (2.13").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in April
Glen Carbon, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Glen Carbon, 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 30min).
- Average sunshine in April: 8h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in April
Glen Carbon, IL
- Average sunshine days in April: 13.1 days
The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in April
Glen Carbon, 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
Glen Carbon, IL
- Average cloud cover in April: 42
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in April
Glen Carbon, 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).
