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
With the onset of April, the average high-temperature slightly shifts from March's chilly 45.1°F (7.3°C) to a moderate 56.5°F (13.6°C). During April nights, Westmont records an average temperature of 40.6°F (4.8°C).Humidity
In April, the average relative humidity is 74%.Rainfall
In Westmont, Illinois, in April, it is raining for 12.8 days, with typically 1.38" (35mm) of accumulated precipitation. In Westmont, Illinois, during the entire year, the rain falls for 118.5 days and collects up to 13.74" (349mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 1.4 snowfall days, in April, Westmont aggregates 1.1" (28mm) of snow. In Westmont, during the entire year, snow falls for 34.9 days and aggregates up to 7.2" (183mm) of snow.Daylight
In April, the average length of the day in Westmont is 13h and 22min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:17 pm. On the last day of April, sunrise is at 5:48 am and sunset at 7:49 pm CDT.
Sunshine
The average sunshine in April is 7.6h.UV index
In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 3 during April leads to these instructions:
Take precautions - Protection against sun damage is advised. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Westmont?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows?
What is the average length of the day in April?
What time are sunrise and sunset in April in Westmont?
How many hours of sunshine does Westmont have in April?
How high is the UV index in April in Westmont?
Average temperature in April
Westmont, IL
- Average high temperature in April: 56.5°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in April: 40.6°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in April
Westmont, 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
Westmont, IL
- Average wind speed in April: 9.4mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in April
Westmont, IL
- Average humidity in April: 74%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Westmont, IL
- Average rainfall in April: 1.38"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is December (0.63").
Average rainfall days in April
Westmont, IL
- Average rainfall days in April: 12.8 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in April
Westmont, IL
- Average snowfall in April: 1.1"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Westmont, IL
- Average snowfall days in April: 1.4 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Westmont, 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 August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
Westmont, IL
- Average sunshine days in April: 13.8 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in April
Westmont, IL
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in April
Westmont, IL
- Average cloud cover in April: 50
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in April
Westmont, 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).
Westmont, Illinois, USA
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