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
As April arrives, a rise in the average high-temperature is observed, moving from a chilly 44.1°F (6.7°C) in March to a moderate 56.3°F (13.5°C). Rock Valley cools down to an average low-temperature of 39.9°F (4.4°C) throughout the month of April.Humidity
The average relative humidity in April in Rock Valley is 68%.Rainfall
In Rock Valley, in April, it is raining for 13.8 days, with typically 2.72" (69mm) of accumulated precipitation. Throughout the year, in Rock Valley, there are 130 rainfall days, and 24.09" (612mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Rock Valley, during April, snow falls for 2.7 days and regularly aggregates up to 2.64" (67mm) of snow. In Rock Valley, during the entire year, snow falls for 49.2 days and aggregates up to 19.41" (493mm) of snow.Daylight
In Rock Valley, the average length of the day in April is 13h and 26min.On the first day of April in Rock Valley, sunrise is at 7:05 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 8:26 pm CDT.
Sunshine
In April, the average sunshine is 8.1h.UV index
In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 3 during April translates into the following directions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Always opt for UVA and UVB-resistant sunglasses on radiant days. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Rock Valley?
What is the average humidity in April in Rock Valley?
How much does it rain in Rock Valley in April?
How much does it snow in Rock Valley in April?
How many hours of daylight does Rock Valley have in April?
When is the sunrise / sunset in April in Rock Valley?
How many hours of sunshine does Rock Valley have in April?
What is the UV index reading in April in Rock Valley?
Average temperature in April
Rock Valley, IA
- Average high temperature in April: 56.3°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in April: 39.9°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in April
Rock Valley, IA
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in April
Rock Valley, IA
- Average wind speed in April: 11.2mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in April
Rock Valley, IA
- Average humidity in April: 68%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (67%).
Average rainfall in April
Rock Valley, IA
- Average rainfall in April: 2.72"
The wettest month (with the highest rainfall) is June (3.78").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in April
Rock Valley, IA
- Average rainfall days in April: 13.8 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in April
Rock Valley, IA
- Average snowfall in April: 2.64"
The month with the highest snowfall is February (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Rock Valley, IA
- Average snowfall days in April: 2.7 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Rock Valley, 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 0min).
- Average sunshine in April: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in April
Rock Valley, IA
- Average sunshine days in April: 12.4 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in April
Rock Valley, IA
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in April
Rock Valley, IA
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in April
Rock Valley, 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).
Rock Valley, Iowa, USA
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