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 sees a temperature increase, moving from a cold 41.5°F (5.3°C) in March to a cool 54.9°F (12.7°C). In Rock Falls, the average low-temperature during the month of April is a wintry 39.4°F (4.1°C).Humidity
In April, the average relative humidity in Rock Falls is 72%.Rainfall
In Rock Falls, Iowa, in April, it is raining for 15 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, in Rock Falls, there are 129.5 rainfall days, and 25.98" (660mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In April, it is snowing for 2.4 days. Throughout April, 2.2" (56mm) of snow is accumulated. Throughout the year, in Rock Falls, Iowa, there are 50.1 snowfall days, and 21.69" (551mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 26min.On the first day of April in Rock Falls, sunrise is at 6:52 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 8:13 pm CDT.
Sunshine
The average sunshine in April in Rock Falls, Iowa, is 7.5h.UV index
In April, the average daily maximum UV index in Rock Falls is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In April, a daily UV index of 3 turns into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Rock Falls?
What is the average humidity in April in Rock Falls?
How many days does it rain in April in Rock Falls?
How much does it snow in Rock Falls in April?
How many hours of daylight does Rock Falls have in April?
When are sunrise and sunset in April in Rock Falls?
How long on average sun shines in April in Rock Falls?
How high is the UV index in April in Rock Falls?
Average temperature in April
Rock Falls, 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 (22.5°F).
- Average low temperature in April: 39.4°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 (10°F).
Average pressure in April
Rock Falls, IA
- Average pressure in April: 29.93"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in April
Rock Falls, IA
- Average wind speed in April: 10.7mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in April
Rock Falls, 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
Rock Falls, IA
- Average rainfall in April: 2.68"
The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in April
Rock Falls, IA
- Average rainfall days in April: 15 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3 days).
Average snowfall in April
Rock Falls, IA
- Average snowfall in April: 2.2"
The month with the highest snowfall is February (5.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Rock Falls, IA
- Average snowfall days in April: 2.4 days
The month with the highest number of snowfall days is January (12.7 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, 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: 7h and 3min
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 36min).
Average sunshine days in April
Rock Falls, IA
- Average sunshine days in April: 12.3 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in April
Rock Falls, 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 and December (UV index 1).
Average cloud cover in April
Rock Falls, IA
- Average cloud cover in April: 49
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in April
Rock Falls, IA
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Rock Falls, Iowa, USA
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