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
As Janesville transitions into April, the average high-temperature is observed to rise from a frosty 43.2°F (6.2°C) in March to a cool 54.9°F (12.7°C). An average low-temperature of 38.7°F (3.7°C) is common in Janesville during the nights of April.Humidity
The months with the lowest humidity are April and October, with an average relative humidity of 76%.Rainfall
In Janesville, in April, during 13.7 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, in Janesville, there are 127.7 rainfall days, and 17.87" (454mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Janesville. April is the last month it regularly snows in Janesville. During 2 snowfall days, in April, Janesville aggregates 1.18" (30mm) of snow. Throughout the year, there are 44.5 snowfall days, and 11.34" (288mm) of snow is accumulated.Daylight
In Janesville, the average length of the day in April is 13h and 25min.On the first day of April, sunrise is at 6:36 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 7:55 pm CDT.
Sunshine
The average sunshine in April in Janesville is 7.4h.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 average individuals.Note: The UV index of 3 during April leads to these advisories:
Adopt protective measures - It is advised to guard against sun damage. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
What is the usual temperature for Janesville in April?
What is the least humid month in Janesville?
What is the average humidity in April in Janesville?
How many days does it rain in April in Janesville?
What is the last month it snows in Janesville?
What is the average length of the day in April in Janesville?
When are sunrise and sunset in April in Janesville?
How many hours of sunshine does Janesville have in April?
What is the UV index intensity in April in Janesville?
Average temperature in April
Janesville, WI
- Average high temperature in April: 54.9°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in April: 38.7°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in April
Janesville, WI
- 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 (29.91"Hg).
Average wind speed in April
Janesville, WI
- Average wind speed in April: 10.1mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in April
Janesville, WI
- Average humidity in April: 76%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in April
Janesville, WI
- Average rainfall in April: 1.89"
The wettest month (with the highest rainfall) is June (2.76").
The driest months (with the least rainfall) are January and February (0.75").
Average rainfall days in April
Janesville, WI
- Average rainfall days in April: 13.7 days
The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in April
Janesville, WI
- Average snowfall in April: 1.18"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Janesville, WI
- Average snowfall days in April: 2 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Janesville, WI
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 7h and 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in April
Janesville, WI
- Average sunshine days in April: 13.5 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in April
Janesville, WI
- Average UV index in April: 3
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Janesville, WI
- Average cloud cover in April: 51
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in April
Janesville, WI
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Janesville, Wisconsin, USA
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