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
Swansea's transition into April sees a rise in the average high-temperature, advancing from a fresh 54.5°F (12.5°C) in March to a refreshing 65.5°F (18.6°C). Swansea encounters a steady low-temperature average of 47.8°F (8.8°C) throughout the month of April.Humidity
In Swansea, the average relative humidity in April is 77%.Rainfall
In Swansea, in April, during 15.8 rainfall days, 3.78" (96mm) of precipitation is typically accumulated. Throughout the year, there are 147.1 rainfall days, and 35.43" (900mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Swansea, the average length of the day in April is 13h and 14min.On the first day of April, sunrise is at 6:43 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 7:51 pm CDT.
Sunshine
The average sunshine in April is 8.3h.UV index
In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 4 during April leads to these advisories:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Swansea in April?
What is the average humidity in April?
How much does it rain in April?
When it does not snow?
Does it snow in April?
How many hours of daylight does Swansea have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Swansea have in April?
What is the UV index reading in April?
Average temperature in April
Swansea, IL
- Average high temperature in April: 65.5°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in April: 47.8°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in April
Swansea, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Swansea, IL
- Average wind speed in April: 9.1mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in April
Swansea, IL
- Average humidity in April: 77%
The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Swansea, IL
- Average rainfall in April: 3.78"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.93").
Average rainfall days in April
Swansea, IL
- Average rainfall days in April: 15.8 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in April
Swansea, IL
- Average snowfall in April: 0"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Swansea, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Swansea, IL
- Average daylight in April: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in April
Swansea, IL
- Average sunshine days in April: 13.1 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in April
Swansea, IL
- Average UV index in April: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in April
Swansea, IL
- Average cloud cover in April: 43
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in April
Swansea, 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).
Swansea, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location