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
Saint Charles's transition into April brings a rise in the average high-temperature, moving from a frosty 44.8°F (7.1°C) in March to a mild 56.1°F (13.4°C). Saint Charles's nighttime temperature in April drops to an average of 40.1°F (4.5°C).Humidity
In April, the average relative humidity is 76%.Rainfall
In April, the rain falls for 11.1 days. Throughout April, 0.98" (25mm) of precipitation is accumulated. In Saint Charles, during the entire year, the rain falls for 101.9 days and collects up to 8.58" (218mm) of precipitation.Snowfall
Months with snowfall in Saint Charles are January through April, October through December. April is the last month it regularly snows in Saint Charles. During 1.2 snowfall days, in April, Saint Charles aggregates 0.67" (17mm) of snow. In Saint Charles, during the entire year, snow falls for 28.3 days and aggregates up to 3.74" (95mm) of snow.Daylight
In April, the average length of the day is 13h and 23min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:19 pm. On the last day of April, sunrise is at 5:49 am and sunset at 7:51 pm CDT.
Sunshine
In Saint Charles, the average sunshine in April is 7.5h.UV index
In April, the average daily maximum UV index in Saint Charles is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 3 in April transforms into the following instructions:
Heed the precautions - Suggestions to avoid sunburn are made. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Saint Charles?
What is the average humidity in April in Saint Charles?
How much does it rain in Saint Charles in April?
What is the last month it snows in Saint Charles?
What is the average length of the day in April in Saint Charles?
When is the sunrise / sunset in April in Saint Charles?
How long on average sun shines in April in Saint Charles?
What is the UV index intensity in April in Saint Charles?
Average temperature in April
Saint Charles, IL
- Average high temperature in April: 56.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in April: 40.1°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in April
Saint Charles, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Saint Charles, IL
- Average wind speed in April: 9.7mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in April
Saint Charles, IL
- Average humidity in April: 76%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in April
Saint Charles, IL
- Average rainfall in April: 0.98"
The wettest month (with the highest rainfall) is May (1.26").
The driest months (with the least rainfall) are November and December (0.39").
Average rainfall days in April
Saint Charles, IL
- Average rainfall days in April: 11.1 days
The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is January (3.4 days).
Average snowfall in April
Saint Charles, IL
- Average snowfall in April: 0.67"
The month with the highest snowfall is January (1.14").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Saint Charles, IL
- Average snowfall days in April: 1.2 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Saint Charles, 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 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
Saint Charles, IL
- Average sunshine days in April: 15.6 days
The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is June (13.3 days).
Average UV index in April
Saint Charles, IL
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Saint Charles, 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 32).
Average visibility in April
Saint Charles, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Saint Charles, Illinois, USA
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