April weather forecast and climate
Mason City, IA

Weather in April

April is a fresh spring month in Mason City, Iowa, with temperature in the range of an average high of 54.9°F (12.7°C) and an average low of 39.7°F (4.3°C).

Temperature

In Mason City, the average high-temperature in April increases, from a wintry 41.4°F (5.2°C) in March, to a cool 54.9°F (12.7°C). The average low-temperature, in Mason City, is 39.7°F (4.3°C).

Humidity

In April, the average relative humidity in Mason City is 72%.

Rainfall

In April, in Mason City, the rain falls for 16.3 days. Throughout April, 3.07" (78mm) of precipitation is accumulated. In Mason City, during the entire year, the rain falls for 145.9 days and collects up to 28.82" (732mm) of precipitation.

Snowfall

Months with snowfall in Mason City are January through May, October through December. In April, it is snowing for 2.9 days. Throughout April, 2.48" (63mm) of snow is accumulated. In Mason City, during the entire year, snow falls for 60.2 days, and aggregates up to 26.26" (667mm) of snow.

Daylight

In Mason City, the average length of the day in April is 13.5h.

Sunshine

The average sunshine in April is 7.6h.

UV index

In Mason City, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: In April, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in April in Mason City?

In April, the average relative humidity is 72%.

How much does it rain in Mason City in April?

In Mason City, in April, it is raining for 16.3 days, with typically 3.07" (78mm) of accumulated precipitation.

How much does it snow in Mason City in April?

In April, in Mason City, Iowa, it is snowing for 2.9 days. Throughout April, 2.48" (63mm) of snow is accumulated.

What is the average length of the day in April in Mason City?

In April, the average length of the day is 13.5h.

How many hours of sunshine does Mason City have in April?

The average sunshine in April in Mason City is 7.6h.

What is the UV index reading in April in Mason City?

In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.

Average temperature in April
Mason City, IA

Average temperature in April - Mason City, IA
  • Average high temperature in April: 54.9°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.3°F).

  • Average low temperature in April: 39.7°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).

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Average pressure in April
Mason City, IA

Average pressure in April - Mason City, IA
  • Average pressure in April: 29.93"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in April
Mason City, IA

Average wind speed in April - Mason City, IA
  • Average wind speed in April: 10.9mph

The windiest months (with the highest average wind speed) are January and April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).

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Average humidity in April
Mason City, IA

Average humidity in April - Mason City, IA
  • Average humidity in April: 72%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in April
Mason City, IA

Average rainfall in April - Mason City, IA
  • Average rainfall in April: 3.07"

The wettest month (with the highest rainfall) is June (4.65").
The driest month (with the least rainfall) is January (1.06").

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Average rainfall days in April
Mason City, IA

Average rainfall days in April - Mason City, IA
  • Average rainfall days in April: 16.3 days

The month with the highest number of rainy days is June (19.8 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in April
Mason City, IA

Average snowfall in April - Mason City, IA
  • Average snowfall in April: 2.48"

The month with the highest snowfall is February (7.48").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Mason City, IA

Average snowfall days in April - Mason City, IA
  • Average snowfall days in April: 2.9 days

The month with the highest number of snowfall days is January (14.6 days).
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
Mason City, IA

Average daylight in April / Average sunshine in April - Mason City, IA
  • Average daylight in April: 13.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in April: 7.6h

The month with the most sunshine is July (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.5h).

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Average sunshine days in April
Mason City, IA

Average sunshine days in April - Mason City, IA
  • Average sunshine days in April: 11 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (8 days).

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Average UV index in April
Mason City, IA

Average UV index in April - Mason City, IA
  • Average UV index in April: 3

The month with the highest UV index is June (UV index 6).
Months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in April
Mason City, IA

Average cloud cover in April - Mason City, IA
  • Average cloud cover in April: 48

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in April
Mason City, IA

Average visibility in April - Mason City, IA
  • Average visibility in April: 6mi

Months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
Months with the lowest visibility are January, February, July and December (5mi).

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