April weather forecastClinton, IL
April
Weather in April
April in Clinton, Illinois, is a refreshing spring month, with an average temperature ranging between min 45.5°F (7.5°C) and max 61.5°F (16.4°C).Temperature
April sees a temperature increase, moving from a frosty 49.5°F (9.7°C) in March to an enjoyable 61.5°F (16.4°C). The temperature dips to an average of 45.5°F (7.5°C) during April nights.Humidity
In Clinton, the average relative humidity in April is 74%.Rainfall
In Clinton, in April, during 16.7 rainfall days, 3.7" (94mm) of precipitation is typically accumulated. In Clinton, during the entire year, the rain falls for 165.4 days and collects up to 33.78" (858mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows. During 1.2 snowfall days, in April, Clinton aggregates 0.67" (17mm) of snow. Throughout the year, there are 36.9 snowfall days, and 14.76" (375mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 18min.On the first day of April, sunrise is at 6:38 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 7:50 pm CDT.
Sunshine
The average sunshine in April is 8h.UV index
In Clinton, the average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 4 in April translates into the following instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Clinton, IL
- Average high temperature in April: 61.5°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in April: 45.5°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in April
Clinton, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Clinton, IL
- Average wind speed in April: 10.7mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in April
Clinton, IL
- Average humidity in April: 74%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Clinton, IL
- Average rainfall in April: 3.7"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is December (1.89").
Average rainfall days in April
Clinton, IL
- Average rainfall days in April: 16.7 days
The months with the highest number of rainy days are May and July (20.2 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in April
Clinton, IL
- Average snowfall in April: 0.67"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Clinton, IL
- Average snowfall days in April: 1.2 days
The month with the highest number of snowfall days is January (12 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
Clinton, IL
- Average daylight in April: 13h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
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 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in April
Clinton, IL
- Average sunshine days in April: 10.9 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in April
Clinton, 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
Clinton, IL
- Average cloud cover in April: 45
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in April
Clinton, 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).
