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
Rock Falls's April weather shows an increase in high-temperatures, moving from March's icy 38.8°F (3.8°C) to a cool 51.8°F (11°C). April nights in Rock Falls, Wisconsin, cool down to an average low-temperature of 35.2°F (1.8°C).Humidity
The months with the lowest humidity are April and October, with an average relative humidity of 77%.Rainfall
In Rock Falls, in April, it is raining for 15.2 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, there are 135.6 rainfall days, and 26.57" (675mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Rock Falls, Wisconsin, in April, during 4.9 snowfall days, 2.87" (73mm) of snow is typically accumulated. Throughout the year, there are 69.2 snowfall days, and 26.02" (661mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 31min.On the first day of April, sunrise is at 6:45 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:10 pm CDT.
Sunshine
In April, the average sunshine is 7h.UV index
In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In April, the average maximum UV index of 3 translates into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April?
What is the least humid month?
What is the average humidity in April in Rock Falls?
How much does it rain in April?
How much does it snow in April?
How many hours of daylight does Rock Falls have in April?
When is the sunrise / sunset in April?
How long on average sun shines in April?
How high is the UV index in April in Rock Falls?
Average temperature in April
Rock Falls, WI
- Average high temperature in April: 51.8°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (19.9°F).
- Average low temperature in April: 35.2°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in April
Rock Falls, WI
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in April
Rock Falls, WI
- Average wind speed in April: 9.3mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in April
Rock Falls, WI
- Average humidity in April: 77%
The months with the highest relative humidity are January and February (91%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in April
Rock Falls, WI
- Average rainfall in April: 2.68"
The wettest month (with the highest rainfall) is June (4.57").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in April
Rock Falls, WI
- Average rainfall days in April: 15.2 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in April
Rock Falls, WI
- Average snowfall in April: 2.87"
The month with the highest snowfall is February (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Rock Falls, WI
- Average snowfall days in April: 4.9 days
The month with the highest number of snowfall days is January (16.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Rock Falls, WI
- Average daylight in April: 13h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in April: 7h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in April
Rock Falls, WI
- Average sunshine days in April: 11.3 days
The month with the most sunshine days is October (16.3 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in April
Rock Falls, WI
- Average UV index in April: 3
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
Rock Falls, WI
- Average cloud cover in April: 52
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in April
Rock Falls, WI
- Average visibility in April: 6mi
The months with the highest visibility are April, May, June, August, October and November (6mi).
The month with the lowest visibility is January (4mi).
Rock Falls, Wisconsin, USA
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