April weather forecastCahokia, IL
April
Weather in April
April is an enjoyable spring month in Cahokia, Illinois, with an average temperature fluctuating between 65.5°F (18.6°C) and 48°F (8.9°C).Temperature
The shift from March to April brings an increase in the average high-temperature, moving from a cool 54.5°F (12.5°C) to a comfortable 65.5°F (18.6°C). In April, Cahokia records an average nighttime temperature of 48°F (8.9°C).Humidity
In Cahokia, the average relative humidity in April is 76%.Rainfall
In Cahokia, in April, during 15.7 rainfall days, 4.09" (104mm) of precipitation is typically accumulated. Throughout the year, there are 152.2 rainfall days, and 36.46" (926mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Cahokia.Daylight
In Cahokia, the average length of the day in April is 13h and 14min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:24 pm. On the last day of April, in Cahokia, sunrise is at 6:03 am and sunset at 7:52 pm CDT.
Sunshine
In Cahokia, the average sunshine in April is 8.5h.UV index
The average daily maximum UV index in April in Cahokia is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In April, the average maximum UV index of 5 translates into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. 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
Cahokia, IL
- Average high temperature in April: 65.5°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in April: 48°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 (24.6°F).
Average pressure in April
Cahokia, 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
Cahokia, IL
- Average wind speed in April: 8.9mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in April
Cahokia, IL
- Average humidity in April: 76%
The months with the highest relative humidity are May and July (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Cahokia, IL
- Average rainfall in April: 4.09"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is February (2.01").
Average rainfall days in April
Cahokia, IL
- Average rainfall days in April: 15.7 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in April
Cahokia, IL
- Average snowfall in April: 0"
The month with the highest snowfall is February (2.44").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Cahokia, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (6.4 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
Cahokia, 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 months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in April
Cahokia, IL
- Average sunshine days in April: 12.4 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in April
Cahokia, IL
- Average UV index in April: 5
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 and December (UV index 2).
Average cloud cover in April
Cahokia, IL
- Average cloud cover in April: 42
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in April
Cahokia, 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).
