Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
April brings a rise in the average high-temperature, transitioning from March's icy 42.1°F (5.6°C) to a cool 53.8°F (12.1°C). An average low-temperature of 37.2°F (2.9°C) is common in Sullivan, Wisconsin, during the nights of April.Humidity
The least humid month in Sullivan is April, with an average relative humidity of 76%.Rainfall
In Sullivan, Wisconsin, in April, it is raining for 12.4 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, in Sullivan, there are 121.6 rainfall days, and 14.06" (357mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Sullivan. In Sullivan, during April, snow falls for 2.3 days and regularly aggregates up to 0.47" (12mm) of snow. In Sullivan, during the entire year, snow falls for 46.4 days and aggregates up to 7.48" (190mm) of snow.Daylight
In April, the average length of the day is 13h and 26min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:21 pm. On the last day of April, sunrise is at 5:48 am and sunset at 7:54 pm CDT.
Sunshine
In April, the average sunshine in Sullivan is 7.3h.UV index
In Sullivan, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In April, a regular UV index of 3 translates into these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Sullivan in April?
What is the least humid month in Sullivan?
What is the average humidity in April in Sullivan?
How many days does it rain in April in Sullivan?
How much does it snow in Sullivan in April?
How many hours of daylight does Sullivan have in April?
What time are sunrise and sunset in April in Sullivan?
How many hours of sunshine does Sullivan have in April?
What is the UV index reading in April in Sullivan?
Average temperature in April
Sullivan, WI
- Average high temperature in April: 53.8°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: 37.2°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 (12.2°F).
Average pressure in April
Sullivan, WI
- Average pressure in April: 29.96"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Sullivan, 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 (6.3mph).
Average humidity in April
Sullivan, 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
Sullivan, WI
- Average rainfall in April: 1.57"
The wettest month (with the highest rainfall) is July (1.93").
The driest month (with the least rainfall) is December (0.55").
Average rainfall days in April
Sullivan, WI
- Average rainfall days in April: 12.4 days
The months with the highest number of rainy days are May and July (15.7 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in April
Sullivan, WI
- Average snowfall in April: 0.47"
The month with the highest snowfall is January (2.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Sullivan, WI
- Average snowfall days in April: 2.3 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Sullivan, 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 months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in April
Sullivan, WI
- Average sunshine days in April: 14.8 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in April
Sullivan, WI
- Average UV index in April: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in April
Sullivan, WI
- Average cloud cover in April: 51
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
Sullivan, WI
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Sullivan, Wisconsin, USA
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