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
An upsurge in temperatures occurs as March gives way to April, with average highs shifting from a wintry 39.4°F (4.1°C) to a fresh 50.2°F (10.1°C). In April, Lannon reports a consistent average low-temperature of 37°F (2.8°C) during the nights.Humidity
The average relative humidity in April is 77%.Rainfall
In Lannon, during April, the rain falls for 15.7 days and regularly aggregates up to 2.83" (72mm) of precipitation. In Lannon, during the entire year, the rain falls for 139.2 days and collects up to 25.28" (642mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows in Lannon. During 2.8 snowfall days, in April, Lannon aggregates 1.46" (37mm) of snow. Throughout the year, there are 48.9 snowfall days, and 15.35" (390mm) of snow is accumulated.Daylight
The average length of the day in April in Lannon is 13h and 26min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:19 pm. On the last day of April, in Lannon, sunrise is at 5:46 am and sunset at 7:53 pm CDT.
Sunshine
In Lannon, the average sunshine in April is 7.5h.UV index
In Lannon, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 3 during April translates into the following directions:
Exercise prevention - Protecting skin and eyes from harm is required. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Lannon in April?
What is the average humidity in April in Lannon?
How many days does it rain in April in Lannon?
What is the last month it snows in Lannon?
How many hours of daylight does Lannon have in April?
When is the sunrise / sunset in April in Lannon?
How long on average sun shines in April in Lannon?
What is the UV index reading in April in Lannon?
Average temperature in April
Lannon, WI
- Average high temperature in April: 50.2°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in April: 37°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in April
Lannon, WI
- Average pressure in April: 29.96"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Lannon, WI
- Average wind speed in April: 10.4mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in April
Lannon, WI
- Average humidity in April: 77%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall in April
Lannon, WI
- Average rainfall in April: 2.83"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in April
Lannon, WI
- Average rainfall days in April: 15.7 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in April
Lannon, WI
- Average snowfall in April: 1.46"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Lannon, WI
- Average snowfall days in April: 2.8 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Lannon, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in April
Lannon, WI
- Average sunshine days in April: 12 days
The month with the most sunshine days is December (15.9 days).
The month with the least sunshine days is April (12 days).
Average UV index in April
Lannon, WI
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in April
Lannon, WI
- Average cloud cover in April: 51
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in April
Lannon, WI
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Lannon, Wisconsin, USA
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