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
The start of April signals an increase in the average high-temperature, moving from a cold 37.8°F (3.2°C) in March to a cool 51.1°F (10.6°C). Nighttime temperatures in April average to a wintry 34.9°F (1.6°C).Humidity
The least humid month is April, with an average relative humidity of 77%.Rainfall
In Altoona, in April, during 14.1 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. In Altoona, during the entire year, the rain falls for 128.5 days and collects up to 26.22" (666mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In April, it is snowing for 4.3 days. Throughout April, 2.17" (55mm) of snow is accumulated. Throughout the year, in Altoona, there are 57.9 snowfall days, and 25.87" (657mm) of snow is accumulated.Daylight
In April, the average length of the day in Altoona is 13h and 31min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:33 pm. On the last day of April, sunrise is at 5:55 am and sunset at 8:10 pm CDT.
Sunshine
In April, the average sunshine is 7h.UV index
In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 3 in April translates into this advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures?
What is the least humid month?
What is the average humidity in April?
How much does it rain in April?
How much does it snow in April?
How many hours of daylight does Altoona have in April?
What time are sunrise and sunset in April?
How long on average sun shines in April in Altoona?
What is the UV index reading in April?
Average temperature in April
Altoona, WI
- Average high temperature in April: 51.1°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (19.4°F).
- Average low temperature in April: 34.9°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in April
Altoona, WI
- Average pressure in April: 29.96"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in April
Altoona, WI
- Average wind speed in April: 9.1mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in April
Altoona, WI
- Average humidity in April: 77%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is April (77%).
Average rainfall in April
Altoona, WI
- Average rainfall in April: 2.8"
The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in April
Altoona, WI
- Average rainfall days in April: 14.1 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (2.7 days).
Average snowfall in April
Altoona, WI
- Average snowfall in April: 2.17"
The month with the highest snowfall is February (7.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Altoona, WI
- Average snowfall days in April: 4.3 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Altoona, WI
- Average daylight in April: 13h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in April: 7h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in April
Altoona, WI
- Average sunshine days in April: 12.1 days
The month with the most sunshine days is January (17.4 days).
The month with the least sunshine days is June (10 days).
Average UV index in April
Altoona, 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, February, November and December (UV index 1).
Average cloud cover in April
Altoona, WI
- Average cloud cover in April: 53
The months with the most cloud cover are January, February and December (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in April
Altoona, WI
- Average visibility in April: 6mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Altoona, Wisconsin, USA
Weather forecast for your location
2. Allow the app to use your location