April weather forecastGranite City, IL
April
Weather in April
April in Granite City, Illinois, is a refreshing spring month, with temperature in the range of an average low of 48°F (8.9°C) and an average high of 65.1°F (18.4°C).Temperature
As Granite City enters April, the average high-temperature increases from the a cool 54.1°F (12.3°C) of March to a comfortable 65.1°F (18.4°C). Throughout the nights in April, Granite City experiences an average low-temperature of 48°F (8.9°C).Humidity
The average relative humidity in April is 75%.Rainfall
In April, in Granite City, the rain falls for 16.1 days. Throughout April, 4.06" (103mm) of precipitation is accumulated. Throughout the year, there are 159.5 rainfall days, and 36.06" (916mm) of precipitation is accumulated.Snowfall
In Granite City, snow does not fall in April through October.Daylight
In April, the average length of the day is 13h and 14min.On the first day of April, sunrise is at 6:43 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 7:52 pm CDT.
Sunshine
In Granite City, the average sunshine in April is 8.6h.UV index
The average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 4 in April translates into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Granite City, IL
- Average high temperature in April: 65.1°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (37.2°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 (24.3°F).
Average pressure in April
Granite City, 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
Granite City, IL
- Average wind speed in April: 9mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in April
Granite City, IL
- Average humidity in April: 75%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Granite City, IL
- Average rainfall in April: 4.06"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is February (1.93").
Average rainfall days in April
Granite City, IL
- Average rainfall days in April: 16.1 days
The months with the highest number of rainy days are May and July (17.8 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in April
Granite City, IL
- Average snowfall in April: 0"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Granite City, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (6.3 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
Granite City, 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 36min
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 36min).
Average sunshine days in April
Granite City, IL
- Average sunshine days in April: 11.8 days
The month with the most sunshine days is December (18 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in April
Granite City, 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
Granite City, IL
- Average cloud cover in April: 41
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in April
Granite City, 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).
