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
April sees a rise in the average high-temperature, climbing from a chilly 44.2°F (6.8°C) in March to a mild 56.3°F (13.5°C). During April, Stillman Valley experiences an average low-temperature of 39.7°F (4.3°C) at night.Humidity
April and October, with an average relative humidity of 75%, are the least humid months.Rainfall
In Stillman Valley, in April, it is raining for 11.1 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, in Stillman Valley, there are 100.6 rainfall days, and 7.99" (203mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Stillman Valley. April is the last month it regularly snows in Stillman Valley. During 1.1 snowfall days, in April, Stillman Valley aggregates 0.12" (3mm) of snow. In Stillman Valley, during the entire year, snow falls for 29.5 days and aggregates up to 3.66" (93mm) of snow.Daylight
In Stillman Valley, the average length of the day in April is 13h and 23min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:22 pm. On the last day of April, in Stillman Valley, sunrise is at 5:52 am and sunset at 7:55 pm CDT.
Sunshine
The average sunshine in April in Stillman Valley is 7.5h.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 radiation for the ordinary person.Note: In April, the maximum UV index of 3 suggests these recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Stillman Valley?
What are the least humid months in Stillman Valley?
What is the average humidity in April in Stillman Valley?
How much does it rain in Stillman Valley in April?
What is the last month it snows in Stillman Valley?
How many hours of daylight does Stillman Valley have in April?
When are sunrise and sunset in April in Stillman Valley?
How many hours of sunshine does Stillman Valley have in April?
How high is the UV index in April in Stillman Valley?
Average temperature in April
Stillman Valley, IL
- Average high temperature in April: 56.3°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in April: 39.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure in April
Stillman Valley, IL
- Average pressure in April: 29.95"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
Stillman Valley, IL
- Average wind speed in April: 10.2mph
The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in April
Stillman Valley, IL
- Average humidity in April: 75%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall in April
Stillman Valley, IL
- Average rainfall in April: 0.91"
The wettest month (with the highest rainfall) is May (1.18").
The driest months (with the least rainfall) are January and February (0.35").
Average rainfall days in April
Stillman Valley, IL
- Average rainfall days in April: 11.1 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (3.2 days).
Average snowfall in April
Stillman Valley, IL
- Average snowfall in April: 0.12"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Stillman Valley, IL
- Average snowfall days in April: 1.1 days
The month with the highest number of snowfall days is January (8.1 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
Stillman Valley, 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 3min
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 42min).
Average sunshine days in April
Stillman Valley, IL
- Average sunshine days in April: 16.8 days
The month with the most sunshine days is December (22.6 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in April
Stillman Valley, IL
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Stillman Valley, IL
- Average cloud cover in April: 50
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in April
Stillman Valley, IL
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Stillman Valley, Illinois, USA
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