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 sea temperature 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
The average high-temperature increases in April, moving from a wintry 38.8°F (3.8°C) in March to a chilly 48.2°F (9°C). An average nighttime temperature of 37.8°F (3.2°C) is observed during April.Humidity
In April, the average relative humidity is 77%.Rainfall
In April, the rain falls for 13.3 days. Throughout April, 2.01" (51mm) of precipitation is accumulated. In Whitefish Bay, during the entire year, the rain falls for 129.5 days and collects up to 18.62" (473mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows. During 2 snowfall days, in April, Whitefish Bay aggregates 0.67" (17mm) of snow. Throughout the year, in Whitefish Bay, there are 42.5 snowfall days, and 8.23" (209mm) of snow is accumulated.Ocean temperature
In Whitefish Bay, the average seawater temperature in April is 38.1°F (3.4°C).Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.
Daylight
In Whitefish Bay, the average length of the day in April is 13h and 26min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:18 pm. On the last day of April, sunrise is at 5:45 am and sunset at 7:52 pm CDT.
Sunshine
In April, the average sunshine is 7.6h.UV index
In Whitefish Bay, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In April, a daily maximum UV index of 3 leads to the following instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures?
What is the average humidity in April?
How many days does it rain in April?
What is the last month it snows?
What is the water temperature in April?
What is the average length of the day in April?
When are sunrise and sunset in April?
How long on average sun shines in April?
How high is the UV index in April?
Average temperature in April
Whitefish Bay, WI
- Average high temperature in April: 48.2°F
The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in April: 37.8°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in April
Whitefish Bay, 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 (29.92"Hg).
Average wind speed in April
Whitefish Bay, WI
- Average wind speed in April: 11.2mph
The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in April
Whitefish Bay, WI
- Average humidity in April: 77%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).
Average rainfall in April
Whitefish Bay, WI
- Average rainfall in April: 2.01"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in April
Whitefish Bay, WI
- Average rainfall days in April: 13.3 days
The months with the highest number of rainy days are May, June and July (15.2 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in April
Whitefish Bay, WI
- Average snowfall in April: 0.67"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Whitefish Bay, WI
- Average snowfall days in April: 2 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in April
Whitefish Bay, WI
- Average sea temperature in April: 38.2°F
The best month for swimming (with the highest average sea temperature) is August (71.9°F).
The coldest month (with the lowest average sea temperature) is February (36°F).
Average daylight in April /
Average sunshine in April
Whitefish Bay, 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 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in April
Whitefish Bay, WI
- Average sunshine days in April: 13.9 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in April
Whitefish Bay, 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 and December (UV index 1).
Average cloud cover in April
Whitefish Bay, WI
- Average cloud cover in April: 50
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in April
Whitefish Bay, WI
- 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).
Whitefish Bay, Wisconsin, USA
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