April weather forecast
Altoona, PA

The scenic Horseshoe Curve in Altoona, Pennsylvania, from above, with a view of the scenic environs of deep tree cover, hills, and scenic lakes
The scenic Horseshoe Curve in Altoona, Pennsylvania, from above, with a view of the scenic environs of deep tree cover, hills, and scenic lakes

Weather in April

April is a moderate spring month in Altoona, Pennsylvania, with temperature in the range of an average high of 57.2°F (14°C) and an average low of 38.7°F (3.7°C).

Temperature

In April, the average high-temperature increases, from a chilly 44.4°F (6.9°C) in March, to a mild 57.2°F (14°C). In April, the average low-temperature is 38.7°F (3.7°C).

Humidity

Months with the lowest humidity are April and July, with an average relative humidity of 77%.

Rainfall

In Altoona, during April, the rain falls for 16.9 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, in Altoona, Pennsylvania, there are 165 rainfall days, and 25.31" (643mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Altoona, Pennsylvania, are January through May, October through December. In Altoona, Pennsylvania,, snow falls for 2.5 days, with typically accumulated 0.75" (19mm) of snow. Throughout the year, in Altoona, there are 58.4 snowfall days, and 20.59" (523mm) of snow is accumulated.

Daylight

The average length of the day in April is 13.3h.

Sunshine

In April, the average sunshine in Altoona is 7.6h.

UV index

In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: In April, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the least humid month in Altoona?

Months with the lowest humidity in Altoona, Pennsylvania, are April and July, with an average relative humidity of 77%.

What is the average humidity in April in Altoona?

In Altoona, Pennsylvania, the average relative humidity in April is 77%.

How much does it rain in Altoona in April?

In Altoona, Pennsylvania, during April, the rain falls for 16.9 days and regularly aggregates up to 2.64" (67mm) of precipitation.

How much does it snow in Altoona in April?

In Altoona, Pennsylvania, in April, during 2.5 snowfall days, 0.75" (19mm) of snow is typically accumulated.

How many hours of daylight does Altoona have in April?

In April, the average length of the day is 13.3h.

How long on average sun shines in April in Altoona?

In Altoona, Pennsylvania, the average sunshine in April is 7.6h.

What is the UV index intensity in April in Altoona?

In April, the average daily maximum UV index in Altoona, Pennsylvania, is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in April
Altoona, PA

Average temperature in April - Altoona, PA
  • Average high temperature in April: 14°C

The warmest month (with the highest average high temperature) is July (27.5°C).
The month with the lowest average high temperature is January (-0.5°C).

  • Average low temperature in April: 3.7°C

The month with the highest average low temperature is July (15.2°C).
The coldest month (with the lowest average low temperature) is January (-7°C).

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Average pressure in April
Altoona, PA

Average pressure in April - Altoona, PA
  • Average pressure in April: 1015.3mbar

The month with the highest atmospheric pressure is November (1020.5mbar).
The month with the lowest atmospheric pressure is June (1014.2mbar).

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Average wind speed in April
Altoona, PA

Average wind speed in April - Altoona, PA
  • Average wind speed in April: 13.4km/h

The windiest month (with the highest average wind speed) is January (14.8km/h).
The calmest month (with the lowest average wind speed) is August (7.9km/h).

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Average humidity in April
Altoona, PA

Average humidity in April - Altoona, PA
  • Average humidity in April: 77%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April and July (77%).

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Average rainfall in April
Altoona, PA

Average rainfall in April - Altoona, PA
  • Average rainfall in April: 67mm

The wettest month (with the highest rainfall) is May (71mm).
The driest month (with the least rainfall) is November (40mm).

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Average rainfall days in April
Altoona, PA

Average rainfall days in April - Altoona, PA
  • Average rainfall days in April: 16.9 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (9.8 days).

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Average snowfall in April
Altoona, PA

Average snowfall in April - Altoona, PA
  • Average snowfall in April: 19mm

The month with the highest snowfall is January (134mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in April
Altoona, PA

Average snowfall days in April - Altoona, PA
  • Average snowfall days in April: 2.5 days

The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in April /
Average sunshine in April
Altoona, PA

Average daylight in April / Average sunshine in April - Altoona, PA
  • Average daylight in April: 13.3h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in April: 7.6h

The month with the most sunshine is July (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 3.5h).

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Average sunshine days in April
Altoona, PA

Average sunshine days in April - Altoona, PA
  • Average sunshine days in April: 10.3 days

The month with the most sunshine days is November (15.3 days).
The month with the least sunshine days is February (8.6 days).

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Average UV index in April
Altoona, PA

Average UV index in April - Altoona, PA
  • Average UV index in April: 3

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in April
Altoona, PA

Average cloud cover in April - Altoona, PA
  • Average cloud cover in April: 50

The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 37).

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Average visibility in April
Altoona, PA

Average visibility in April - Altoona, PA
  • Average visibility in April: 9km

The month with the highest visibility is April (9km).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (8km).

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