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
The shift into April is accompanied by a temperature increase, with the average high-temperature rising from a cold 41.4°F (5.2°C) in March to a cool 54.9°F (12.7°C). Rockwell, in the month of April, anticipates a consistent average low-temperature of 39.7°F (4.3°C).Humidity
The average relative humidity in April is 72%.Rainfall
In Rockwell, during April, the rain falls for 16.3 days and regularly aggregates up to 3.07" (78mm) of precipitation. Throughout the year, there are 145.9 rainfall days, and 28.82" (732mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Rockwell, in April, snow falls for 2.9 days, with typically accumulated 2.48" (63mm) of snow. In Rockwell, during the entire year, snow falls for 60.2 days and aggregates up to 26.26" (667mm) of snow.Daylight
The average length of the day in April is 13h and 26min.On the first day of the month, sunrise is at 6:53 am and sunset at 7:39 pm. On the last day of April, sunrise is at 6:06 am and sunset at 8:13 pm CDT.
Sunshine
In April, the average sunshine in Rockwell, Iowa, is 7.6h.UV index
In Rockwell, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 3 in April, converts into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Rockwell?
What is the average humidity in April?
How many days does it rain in April?
How many days does it snow in April?
How many hours of daylight does Rockwell have in April?
When are sunrise and sunset in April?
How long on average sun shines in April?
How high is the UV index in April?
Average temperature in April
Rockwell, IA
- Average high temperature in April: 54.9°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 (22.3°F).
- Average low temperature in April: 39.7°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in April
Rockwell, IA
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in April
Rockwell, IA
- Average wind speed in April: 10.9mph
The windiest months (with the highest average wind speed) are January and April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in April
Rockwell, IA
- Average humidity in April: 72%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Rockwell, IA
- Average rainfall in April: 3.07"
The wettest month (with the highest rainfall) is June (4.65").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in April
Rockwell, IA
- Average rainfall days in April: 16.3 days
The month with the highest number of rainy days is June (19.8 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in April
Rockwell, IA
- Average snowfall in April: 2.48"
The month with the highest snowfall is February (7.48").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Rockwell, IA
- Average snowfall days in April: 2.9 days
The month with the highest number of snowfall days is January (14.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Rockwell, IA
- 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 4min
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 30min).
Average sunshine days in April
Rockwell, IA
- Average sunshine days in April: 11 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (8 days).
Average UV index in April
Rockwell, IA
- 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
Rockwell, IA
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in April
Rockwell, IA
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
Rockwell, Iowa, USA
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