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
Altoona's weather in April presents a rise in the average high-temperature, moving from a chilly 46.8°F (8.2°C) in March to a moderate 59.5°F (15.3°C). In Altoona, in April, the average low-temperature is a wintry 42.4°F (5.8°C).Humidity
In April, the average relative humidity is 72%.Rainfall
In April, the rain falls for 9.2 days. Throughout April, 0.47" (12mm) of precipitation is accumulated. Throughout the year, there are 79 rainfall days, and 5.94" (151mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows in Altoona. During 0.8 snowfall days, in April, Altoona aggregates 0.12" (3mm) of snow. Throughout the year, there are 22 snowfall days, and 2.44" (62mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 22min.On the first day of April, sunrise is at 6:55 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 8:11 pm CDT.
Sunshine
The average sunshine in April is 8h.UV index
In Altoona, the average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 4 during April translates into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April?
What is the average humidity in April in Altoona?
How many days does it rain in April?
What is the last month it snows in Altoona?
How many hours of daylight does Altoona have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Altoona have in April?
What is the UV index reading in April in Altoona?
Average temperature in April
Altoona, IA
- Average high temperature in April: 59.5°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in April: 42.4°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in April
Altoona, IA
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in April
Altoona, IA
- Average wind speed in April: 10.4mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in April
Altoona, IA
- Average humidity in April: 72%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Altoona, IA
- Average rainfall in April: 0.47"
The wettest month (with the highest rainfall) is May (0.98").
The driest months (with the least rainfall) are January, February and December (0.24").
Average rainfall days in April
Altoona, IA
- Average rainfall days in April: 9.2 days
The month with the highest number of rainy days is May (11.6 days).
The month with the least rainy days is January (1.8 days).
Average snowfall in April
Altoona, IA
- Average snowfall in April: 0.12"
The month with the highest snowfall is January (0.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Altoona, IA
- Average snowfall days in April: 0.8 days
The month with the highest number of snowfall days is January (6.2 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, IA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in April
Altoona, IA
- Average sunshine days in April: 18.8 days
The month with the most sunshine days is December (25.5 days).
The month with the least sunshine days is June (15.5 days).
Average UV index in April
Altoona, IA
- Average UV index in April: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in April
Altoona, IA
- Average cloud cover in April: 45
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in April
Altoona, IA
- 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).
Altoona, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location