April weather forecastOswego, IL
April
Weather in April
April in Oswego, Illinois, is a refreshing spring month, with temperature in the range of an average high of 57°F (13.9°C) and an average low of 40.8°F (4.9°C).Temperature
As March transitions into April, Oswego sees a rise in the average high-temperature, moving from a frosty 45.7°F (7.6°C) to a moderate 57°F (13.9°C). Oswego's April nights cool down to an average low-temperature of 40.8°F (4.9°C).Humidity
In Oswego, the average relative humidity in April is 75%.Rainfall
In April, in Oswego, Illinois, the rain falls for 14.4 days. Throughout April, 1.77" (45mm) of precipitation is accumulated. In Oswego, during the entire year, the rain falls for 133.1 days and collects up to 16.93" (430mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 1.8 snowfall days, in April, Oswego aggregates 1.18" (30mm) of snow. Throughout the year, in Oswego, there are 39.5 snowfall days, and 6.69" (170mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 22min.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, in Oswego, sunrise is at 5:50 am and sunset at 7:50 pm CDT.
Sunshine
The average sunshine in April is 7.7h.UV index
In Oswego, Illinois, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: An average UV index of 3 in April transforms into this advice:
Ensure safety - Sun damage prevention is strongly urged. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Oswego, IL
- Average high temperature in April: 57°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in April: 40.8°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 (16.7°F).
Average pressure in April
Oswego, 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
Oswego, IL
- Average wind speed in April: 9.7mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in April
Oswego, IL
- Average humidity in April: 75%
The months with the highest relative humidity are January, February, July and August (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in April
Oswego, IL
- Average rainfall in April: 1.77"
The wettest month (with the highest rainfall) is June (2.24").
The driest months (with the least rainfall) are November and December (0.75").
Average rainfall days in April
Oswego, IL
- Average rainfall days in April: 14.4 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in April
Oswego, IL
- Average snowfall in April: 1.18"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Oswego, IL
- Average snowfall days in April: 1.8 days
The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Oswego, IL
- Average daylight in April: 13h and 24min
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 42min
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
Oswego, IL
- Average sunshine days in April: 12.3 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in April
Oswego, IL
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Oswego, IL
- Average cloud cover in April: 49
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in April
Oswego, 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).
