April weather forecast
Mason City, IL

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Weather in April

April is an enjoyable spring month in Mason City, Illinois, with temperature in the range of an average low of 45.5°F (7.5°C) and an average high of 61.7°F (16.5°C).

Temperature

April marks a rise in the average high-temperature, moving from March's fresh 50°F (10°C) to a comfortable 61.7°F (16.5°C). An average low-temperature of 45.5°F (7.5°C) is recorded in the month of April.

Humidity

The average relative humidity in April is 74%.

Rainfall

In April, the rain falls for 16.1 days. Throughout April, 3.46" (88mm) of precipitation is accumulated. In Mason City, during the entire year, the rain falls for 150 days and collects up to 29.84" (758mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Mason City, Illinois. April is the last month it regularly snows. During 0.9 snowfall days, in April, Mason City aggregates 0.31" (8mm) of snow. In Mason City, during the entire year, snow falls for 31.9 days and aggregates up to 11.06" (281mm) of snow.

Daylight

The average length of the day in April is 13h and 18min.
On the first day of April in Mason City, Illinois, sunrise is at 6:41 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 7:53 pm CDT.

Sunshine

In Mason City, the average sunshine in April is 8.3h.

UV index

The average daily maximum UV index in April in Mason City is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: During April, 4 as the daily maximum UV index converts into the following advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the average April temperature in Mason City?

The average high-temperature and low-temperature during April are 61.7°F (16.5°C) and 45.5°F (7.5°C) respectively.

What is the average humidity in April in Mason City?

The average relative humidity in April in Mason City, Illinois, is 74%.

How much does it rain in Mason City in April?

In April, in Mason City, Illinois, the rain falls for 16.1 days. Throughout April, 3.46" (88mm) of precipitation is accumulated.

What is the last month it snows in Mason City?

April is the last month it regularly snows in Mason City. During 0.9 snowfall days, in April, Mason City aggregates 0.31" (8mm) of snow.

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

In Mason City, Illinois, the average day length in April is 13h and 18min.

When are sunrise and sunset in April in Mason City?

In April, on the first day of the month, sunrise is at 6:41 am and sunset at 7:23 pm. On the last day of the month, in Mason City, sunrise is at 5:58 am and sunset at 7:53 pm CDT.

How long on average sun shines in April in Mason City?

In Mason City, Illinois, the average sunshine duration in April is 8.3h.

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

The average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Mason City, IL

Average temperature in April - Mason City, IL
  • Average high temperature in April: 61.7°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 (32°F).

  • Average low temperature in April: 45.5°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

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Average pressure in April
Mason City, IL

Average pressure in April - Mason City, IL
  • Average pressure in April: 29.94"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in April
Mason City, IL

Average wind speed in April - Mason City, IL
  • Average wind speed in April: 10.4mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

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Average humidity in April
Mason City, IL

Average humidity in April - Mason City, IL
  • Average humidity in April: 74%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in April
Mason City, IL

Average rainfall in April - Mason City, IL
  • Average rainfall in April: 3.46"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is December (1.46").

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Average rainfall days in April
Mason City, IL

Average rainfall days in April - Mason City, IL
  • Average rainfall days in April: 16.1 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (6.2 days).

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Average snowfall in April
Mason City, IL

Average snowfall in April - Mason City, IL
  • Average snowfall in April: 0.31"

The month with the highest snowfall is January (3.98").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Mason City, IL

Average snowfall days in April - Mason City, IL
  • Average snowfall days in April: 0.9 days

The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in April /
Average sunshine in April
Mason City, IL

Average daylight in April / Average sunshine in April - Mason City, IL
  • Average daylight in April: 13h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in April: 8h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in April
Mason City, IL

Average sunshine days in April - Mason City, IL
  • Average sunshine days in April: 11.5 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.5 days).

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Average UV index in April
Mason City, IL

Average UV index in April - Mason City, IL
  • Average UV index in April: 4

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in April
Mason City, IL

Average cloud cover in April - Mason City, IL
  • Average cloud cover in April: 44

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).

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Average visibility in April
Mason City, IL

Average visibility in April - Mason City, IL
  • 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).

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Mason City, Illinois, USA

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