April weather forecast
Fort Atkinson, WI

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Weather in April

April brings the quintessential spring weather to Fort Atkinson, leaving behind the chill of March. Rain showers become more frequent, evoking the age-old saying, "April showers bring May flowers." April sees the largest average rainfall of the year, recording 3.11" (79mm). As the city moves further away from the frozen state of winter, the snowfall completely ceases. The change in weather brightens the city and heightens the overall vibes of Fort Atkinson.

Temperature

With the arrival of April, the average high-temperature transitions from a wintry 42.1°F (5.6°C) in March to a fresh 54°F (12.2°C). Fort Atkinson experiences a mean temperature of 37.6°F (3.1°C) during April nights.

Humidity

With an average relative humidity of 76%, April is the least humid month.

Rainfall

In Fort Atkinson, in April, it is raining for 15.8 days, with typically 3.11" (79mm) of accumulated precipitation. Throughout the year, in Fort Atkinson, there are 149.4 rainfall days, and 28.82" (732mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Fort Atkinson, during April, snow falls for 2.9 days and regularly aggregates up to 1.69" (43mm) of snow. Throughout the year, there are 58 snowfall days, and 21.85" (555mm) of snow is accumulated.

Daylight

In April, the average length of the day is 13h and 26min.
On the first day of April in Fort Atkinson, sunrise is at 6:35 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 7:55 pm CDT.

Sunshine

In April, the average sunshine is 7.3h.

UV index

The average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high daily UV index of 3 during April translates into the following directions:
Guard yourself - Avoiding sunburn is suggested. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.

Frequently asked questions

What is the average April temperature in Fort Atkinson?

An average high-temperature, in April, in Fort Atkinson, is 54°F (12.2°C) and the average low-temperature is 37.6°F (3.1°C).

What is the least humid month?

The least humid month is April, with an average relative humidity of 76%.

What is the average humidity in April?

The average relative humidity in April is 76%.

How much does it rain in April?

In April, the rain falls for 15.8 days. Throughout April, 3.11" (79mm) of precipitation is accumulated.

How many days does it snow in April?

In Fort Atkinson, during April, snow falls for 2.9 days and regularly aggregates up to 1.69" (43mm) of snow.

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

The average day length in April is 13h and 26min.

When is the sunrise / sunset in April?

In April, on the first day of the month, sunrise is at 6:35 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 7:55 pm CDT.

How long on average sun shines in April?

In Fort Atkinson, the average sunshine duration in April is 7.3h.

What is the UV index intensity in April?

In April, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes 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
Fort Atkinson, WI

Average temperature in April - Fort Atkinson, WI
  • Average high temperature in April: 54°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 (24.3°F).

  • Average low temperature in April: 37.6°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (12°F).

Average pressure in April
Fort Atkinson, WI

Average pressure in April - Fort Atkinson, WI
  • Average pressure in April: 29.96"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in April
Fort Atkinson, WI

Average wind speed in April - Fort Atkinson, WI
  • Average wind speed in April: 9.9mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

Average humidity in April
Fort Atkinson, WI

Average humidity in April - Fort Atkinson, WI
  • Average humidity in April: 76%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (76%).

Average rainfall in April
Fort Atkinson, WI

Average rainfall in April - Fort Atkinson, WI
  • Average rainfall in April: 3.11"

The wettest month (with the highest rainfall) is June (3.78").
The driest months (with the least rainfall) are January and February (1.42").

Average rainfall days in April
Fort Atkinson, WI

Average rainfall days in April - Fort Atkinson, WI
  • Average rainfall days in April: 15.8 days

The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is February (5 days).

Average snowfall in April
Fort Atkinson, WI

Average snowfall in April - Fort Atkinson, WI
  • Average snowfall in April: 1.69"

The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in April
Fort Atkinson, WI

Average snowfall days in April - Fort Atkinson, WI
  • Average snowfall days in April: 2.9 days

The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in April /
Average sunshine in April
Fort Atkinson, WI

Average daylight in April / Average sunshine in April - Fort Atkinson, WI
  • Average daylight in April: 13h and 2min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in April: 7h and 2min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in April
Fort Atkinson, WI

Average sunshine days in April - Fort Atkinson, WI
  • Average sunshine days in April: 10.9 days

The month with the most sunshine days is November (16.1 days).
The months with the least sunshine days are May and June (9.8 days).

Average UV index in April
Fort Atkinson, WI

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

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

Average cloud cover in April
Fort Atkinson, WI

Average cloud cover in April - Fort Atkinson, WI
  • Average cloud cover in April: 52

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in April
Fort Atkinson, WI

Average visibility in April - Fort Atkinson, WI
  • Average visibility in April: 6mi

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

Fort Atkinson, Wisconsin, USA

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