April weather forecast
Superior, WI

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Weather in April

April in Superior is characterized by a delightful spring ambiance. A standout feature of this month is an increase in average temperatures, soaring to a comfortable 46°F (7.8°C). Nature begins its revival, with budding trees and sprouting flowers, painting a colorful canvas all around. Outdoor activities pick up, with hiking and picnic-friendly weather adorning most days. However, spontaneous showers and the occasional gust of wind keep residents on their toes.

Temperature

Superior's transition into April sees a rise in the average high-temperature, advancing from a cold 34.7°F (1.5°C) in March to a chilly 46°F (7.8°C). An average low-temperature of 31.3°F (-0.4°C) is recorded during the nights in April.

Humidity

The average relative humidity in April is 77%.

Rainfall

In April, the rain falls for 6.3 days. Throughout April, 0.39" (10mm) of precipitation is accumulated. Throughout the year, there are 55.7 rainfall days, and 4.33" (110mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Superior, in April, snow falls for 3.4 days, with typically accumulated 0.35" (9mm) of snow. In Superior, during the entire year, snow falls for 42.8 days and aggregates up to 3.39" (86mm) of snow.

Daylight

In April, the average length of the day is 13h and 37min.
On the first day of the month, sunrise is at 6:45 am and sunset at 7:38 pm. On the last day of April, sunrise is at 5:53 am and sunset at 8:17 pm CDT.

Sunshine

In April, the average sunshine is 6.8h.

UV index

In Superior, the average daily maximum UV index in April is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 2 in April transforms into the following instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Updated: Jun 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Superior in April?

In Superior, in April, the average high-temperature is 46°F (7.8°C), and the average low-temperature is 31.3°F (-0.4°C).

What is the average humidity in April in Superior?

The average relative humidity in April is 77%.

How many days does it rain in April?

In April, the rain falls for 6.3 days. Throughout April, 0.39" (10mm) of precipitation is accumulated.

How much does it snow in April?

In Superior, in April, during 3.4 snowfall days, 0.35" (9mm) of snow is typically accumulated.

What is the average length of the day in April?

In Superior, the average day length in April is 13h and 37min.

What time are sunrise and sunset in April?

In April, on the first day of the month, sunrise is at 6:45 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:17 pm CDT.

How long on average sun shines in April?

In Superior, the average sunshine duration in April is 6.8h.

How high is the UV index in April?

In Superior, the average daily maximum UV index in April is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from 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
Superior, WI

Average temperature in April - Superior, WI
  • Average high temperature in April: 46°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (17.1°F).

  • Average low temperature in April: 31.3°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (4.1°F).

Average pressure in April
Superior, WI

Average pressure in April - Superior, WI
  • Average pressure in April: 29.98"Hg

The month with the highest atmospheric pressure is February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in April
Superior, WI

Average wind speed in April - Superior, WI
  • Average wind speed in April: 8.7mph

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in April
Superior, WI

Average humidity in April - Superior, WI
  • Average humidity in April: 77%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (72%).

Average rainfall in April
Superior, WI

Average rainfall in April - Superior, WI
  • Average rainfall in April: 0.39"

The wettest month (with the highest rainfall) is July (0.67").
The driest months (with the least rainfall) are January and February (0.16").

Average rainfall days in April
Superior, WI

Average rainfall days in April - Superior, WI
  • Average rainfall days in April: 6.3 days

The month with the highest number of rainy days is May (7.9 days).
The month with the least rainy days is February (0.5 days).

Average snowfall in April
Superior, WI

Average snowfall in April - Superior, WI
  • Average snowfall in April: 0.35"

The month with the highest snowfall is December (0.98").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in April
Superior, WI

Average snowfall days in April - Superior, WI
  • Average snowfall days in April: 3.4 days

The months with the highest number of snowfall days are January and December (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in April /
Average sunshine in April
Superior, WI

Average daylight in April / Average sunshine in April - Superior, WI
  • Average daylight in April: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in April: 6h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

Average sunshine days in April
Superior, WI

Average sunshine days in April - Superior, WI
  • Average sunshine days in April: 19.9 days

The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is April (19.9 days).

Average UV index in April
Superior, WI

Average UV index in April - Superior, WI
  • Average UV index in April: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in April
Superior, WI

Average cloud cover in April - Superior, WI
  • Average cloud cover in April: 55

The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in April
Superior, WI

Average visibility in April - Superior, WI
  • Average visibility in April: 6mi

The months with the highest visibility are April, May, June, July, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

Superior, Wisconsin, USA

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