Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
As Sterling enters April, the average high-temperature increases from the a frosty 45.9°F (7.7°C) of March to a mild 57.9°F (14.4°C). In Sterling, in April, the average low-temperature is a wintry 41.4°F (5.2°C).Humidity
The average relative humidity in April is 74%.Rainfall
In Sterling, in April, during 14.8 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Sterling, Illinois, during the entire year, the rain falls for 130.2 days and collects up to 17.36" (441mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Sterling. April is the last month it regularly snows. During 1 snowfall days, in April, Sterling aggregates 0.31" (8mm) of snow. In Sterling, during the entire year, snow falls for 34.2 days and aggregates up to 7.87" (200mm) of snow.Daylight
In Sterling, Illinois, the average length of the day in April is 13h and 22min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:24 pm. On the last day of April, sunrise is at 5:55 am and sunset at 7:56 pm CDT.
Sunshine
The average sunshine in April in Sterling, Illinois, is 7.7h.UV index
The average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 3 in April translates into the following instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. To avoid the Sun's strongest rays, limit exposure around the mid-day period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What is the usual temperature for Sterling in April?
What is the average humidity in April in Sterling?
How many days does it rain in April in Sterling?
What is the last month it snows in Sterling?
What is the average length of the day in April in Sterling?
When are sunrise and sunset in April in Sterling?
How long on average sun shines in April in Sterling?
What is the UV index reading in April in Sterling?
Average temperature in April
Sterling, IL
- Average high temperature in April: 57.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in April: 41.4°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in April
Sterling, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Sterling, IL
- Average wind speed in April: 10.4mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in April
Sterling, IL
- Average humidity in April: 74%
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in April
Sterling, IL
- Average rainfall in April: 1.89"
The wettest month (with the highest rainfall) is May (2.83").
The driest months (with the least rainfall) are January and February (0.75").
Average rainfall days in April
Sterling, IL
- Average rainfall days in April: 14.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in April
Sterling, IL
- Average snowfall in April: 0.31"
The month with the highest snowfall is January (2.56").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Sterling, IL
- Average snowfall days in April: 1 days
The month with the highest number of snowfall days is January (10.2 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
Sterling, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 7h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in April
Sterling, IL
- Average sunshine days in April: 13.1 days
The months with the most sunshine days are November and December (18.8 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in April
Sterling, IL
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Sterling, IL
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in April
Sterling, 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).
Sterling, Illinois, USA
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