April weather forecastJefferson, WI
April
Weather in April
April is a cool spring month in Jefferson, Wisconsin, with temperature in the range of an average high of 54°F (12.2°C) and an average low of 37.6°F (3.1°C).Temperature
The rise of average high-temperatures is seen in April, with an increase from a cold 42.1°F (5.6°C) in March to a fresh 54°F (12.2°C). April in Jefferson, Wisconsin, generally records an average low-temperature of 37.6°F (3.1°C).Humidity
April is the least humid month, with an average relative humidity of 76%.Rainfall
In Jefferson, in April, during 15.8 rainfall days, 3.11" (79mm) of precipitation is typically accumulated. Throughout the year, in Jefferson, 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 Jefferson. In April, in Jefferson, it is snowing for 2.9 days. Throughout April, 1.69" (43mm) of snow is accumulated. In Jefferson, during the entire year, snow falls for 58 days and aggregates up to 21.85" (555mm) of snow.Daylight
In April, the average length of the day in Jefferson, Wisconsin, is 13h and 26min.On the first day of April, 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
In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 3 in April, converts into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Jefferson, 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
Jefferson, 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
Jefferson, 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
Jefferson, 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
Jefferson, 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
Jefferson, 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
Jefferson, 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
Jefferson, 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
Jefferson, WI
- Average daylight in April: 13h and 24min
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 18min
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
Jefferson, 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
Jefferson, 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
Jefferson, 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
Jefferson, 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).
