April weather forecast and climate
Fort Atkinson, IA

Weather in April

April in Fort Atkinson, Iowa, is a cool spring month, with average temperature ranging between min 37.4°F (3°C) and max 54°F (12.2°C).

Temperature

In April, the average high-temperature increases, from a cold 41°F (5°C) in March, to a fresh 54°F (12.2°C). In Fort Atkinson, the average low-temperature is 37.4°F (3°C).

Humidity

The average relative humidity in April is 77%.

Rainfall

In Fort Atkinson, it is raining for 16.5 days, with typically 3.39" (86mm) of accumulated precipitation. In Fort Atkinson, Iowa, during the entire year, the rain falls for 149 days and collects up to 30.59" (777mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Fort Atkinson, Iowa. In Fort Atkinson, Iowa, during April, snow falls for 3.8 days and regularly aggregates up to 2.44" (62mm) of snow. In Fort Atkinson, Iowa, during the entire year, snow falls for 60.9 days, and aggregates up to 24.37" (619mm) of snow.

Daylight

In Fort Atkinson, the average length of the day is 13.5h.

Sunshine

In Fort Atkinson, Iowa, the average sunshine is 7.4h.

UV index

The average daily maximum UV index in Fort Atkinson is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: In April, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 average humidity in April in Fort Atkinson?

The average relative humidity in April is 77%.

How much does it rain in Fort Atkinson in April?

In Fort Atkinson, during April, the rain falls for 16.5 days and regularly aggregates up to 3.39" (86mm) of precipitation.

How many days does it snow in April in Fort Atkinson?

In April, it is snowing for 3.8 days. Throughout April, 2.44" (62mm) of snow is accumulated.

How many hours of daylight does Fort Atkinson have in April?

In April, the average length of the day in Fort Atkinson, Iowa, is 13.5h.

How long on average sun shines in April in Fort Atkinson?

In Fort Atkinson, Iowa, the average sunshine in April is 7.4h.

What is the UV index intensity in April in Fort Atkinson?

The average daily maximum UV index in April in Fort Atkinson is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in April
Fort Atkinson, IA

Average temperature in April - Fort Atkinson, IA
  • Average high temperature in April: 12.2°C

The warmest month (with the highest average high temperature) is July (25.8°C).
The month with the lowest average high temperature is January (-5.4°C).

  • Average low temperature in April: 3°C

The month with the highest average low temperature is July (16.6°C).
The coldest month (with the lowest average low temperature) is January (-12.4°C).

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Average pressure in April
Fort Atkinson, IA

Average pressure in April - Fort Atkinson, IA
  • Average pressure in April: 1013.9mbar

The month with the highest atmospheric pressure is January (1020.4mbar).
The month with the lowest atmospheric pressure is June (1012.2mbar).

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Average wind speed in April
Fort Atkinson, IA

Average wind speed in April - Fort Atkinson, IA
  • Average wind speed in April: 16.7km/h

The windiest month (with the highest average wind speed) is April (16.7km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).

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Average humidity in April
Fort Atkinson, IA

Average humidity in April - Fort Atkinson, IA
  • Average humidity in April: 77%

Months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in April
Fort Atkinson, IA

Average rainfall in April - Fort Atkinson, IA
  • Average rainfall in April: 86mm

The wettest month (with the highest rainfall) is June (128mm).
The driest month (with the least rainfall) is January (28mm).

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Average rainfall days in April
Fort Atkinson, IA

Average rainfall days in April - Fort Atkinson, IA
  • Average rainfall days in April: 16.5 days

Months with the highest number of rainy days are May and June (20.3 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in April
Fort Atkinson, IA

Average snowfall in April - Fort Atkinson, IA
  • Average snowfall in April: 62mm

The month with the highest snowfall is February (152mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in April
Fort Atkinson, IA

Average snowfall days in April - Fort Atkinson, IA
  • Average snowfall days in April: 3.8 days

The month with the highest number of snowfall days is January (14.3 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
Fort Atkinson, IA

Average daylight in April / Average sunshine in April - Fort Atkinson, 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: 7.4h

The month with the most sunshine is August (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
Fort Atkinson, IA

Average sunshine days in April - Fort Atkinson, IA
  • Average sunshine days in April: 10.3 days

The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.1 days).

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Average UV index in April
Fort Atkinson, IA

Average UV index in April - Fort Atkinson, IA
  • Average UV index in April: 3

Months with the highest UV index are May, June, July and August (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in April
Fort Atkinson, IA

Average cloud cover in April - Fort Atkinson, IA
  • Average cloud cover in April: 50

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in April
Fort Atkinson, IA

Average visibility in April - Fort Atkinson, IA
  • Average visibility in April: 9km

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

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