April weather forecastSuperior, IA
April
Weather in April
April is a cool spring month in Superior, Iowa, with temperature in the range of an average high of 54.9°F (12.7°C) and an average low of 39.2°F (4°C).Temperature
In Superior, stepping into April brings a temperature increase, moving up from March's cold 41.5°F (5.3°C) to a cool 54.9°F (12.7°C). April brings with it a nighttime average temperature of 39.2°F (4°C).Humidity
In April, the average relative humidity in Superior is 69%.Rainfall
In Superior, during April, the rain falls for 14 days and regularly aggregates up to 2.76" (70mm) of precipitation. In Superior, during the entire year, the rain falls for 124.6 days and collects up to 24.37" (619mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Superior. In April, it is snowing for 3.1 days. Throughout April, 2.01" (51mm) of snow is accumulated. In Superior, during the entire year, snow falls for 47.4 days and aggregates up to 21.93" (557mm) of snow.Daylight
The average length of the day in April in Superior is 13h and 27min.On the first day of April in Superior, sunrise is at 6:59 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:21 pm CDT.
Sunshine
In Superior, Iowa, the average sunshine in April is 7.8h.UV index
In April, the average daily maximum UV index in Superior is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In April, the UV index of 4 transforms into the following advice:
Ensure safety - Sun damage prevention is strongly urged. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Superior, IA
- Average high temperature in April: 54.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in April: 39.2°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in April
Superior, IA
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in April
Superior, IA
- Average wind speed in April: 11.2mph
The windiest months (with the highest average wind speed) are January, February and April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in April
Superior, IA
- Average humidity in April: 69%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).
Average rainfall in April
Superior, IA
- Average rainfall in April: 2.76"
The wettest month (with the highest rainfall) is June (3.9").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in April
Superior, IA
- Average rainfall days in April: 14 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in April
Superior, IA
- Average snowfall in April: 2.01"
The month with the highest snowfall is February (5.47").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Superior, IA
- Average snowfall days in April: 3.1 days
The month with the highest number of snowfall days is December (10.9 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, IA
- Average daylight in April: 13h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in April: 7h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in April
Superior, IA
- Average sunshine days in April: 12.2 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (8.6 days).
Average UV index in April
Superior, IA
- Average UV index in April: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in April
Superior, IA
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in April
Superior, IA
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
