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 onset of April marks an increase in the average high-temperature, moving from a frosty 48.7°F (9.3°C) in March to a refreshing 60.4°F (15.8°C). Throughout April, the nighttime temperature in Watterson averages to a wintry 42.6°F (5.9°C).Humidity
In Watterson, the average relative humidity in April is 74%.Rainfall
In Watterson, Iowa, during April, the rain falls for 13.1 days and regularly aggregates up to 1.93" (49mm) of precipitation. Throughout the year, in Watterson, Iowa, there are 126.9 rainfall days, and 22.6" (574mm) of precipitation is accumulated.Snowfall
Months with snowfall in Watterson are January through May, October through December. In Watterson, in April, during 0.8 snowfall days, 1.5" (38mm) of snow is typically accumulated. Throughout the year, there are 28.7 snowfall days, and 11.85" (301mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 19min.On the first day of the month, sunrise is at 6:59 am and sunset at 7:42 pm. On the last day of April, sunrise is at 6:15 am and sunset at 8:12 pm CDT.
Sunshine
In Watterson, the average sunshine in April is 8.2h.UV index
The average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: An average UV index of 4 in April transforms into this advice:
Act with care - The suggestion to avoid sunburn is emphasized. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Watterson in April?
What is the average humidity in April in Watterson?
How many days does it rain in April in Watterson?
How many days does it snow in April in Watterson?
What is the average length of the day in April in Watterson?
When is the sunrise / sunset in April in Watterson?
How long on average sun shines in April in Watterson?
What is the UV index reading in April in Watterson?
Average temperature in April
Watterson, IA
- Average high temperature in April: 60.4°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in April: 42.6°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in April
Watterson, IA
- Average pressure in April: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in April
Watterson, IA
- Average wind speed in April: 10.2mph
The windiest months (with the highest average wind speed) are January, February and March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in April
Watterson, IA
- Average humidity in April: 74%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Watterson, IA
- Average rainfall in April: 1.93"
The wettest month (with the highest rainfall) is June (3.86").
The driest months (with the least rainfall) are February and December (0.71").
Average rainfall days in April
Watterson, IA
- Average rainfall days in April: 13.1 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in April
Watterson, IA
- Average snowfall in April: 1.5"
The month with the highest snowfall is January (3.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Watterson, IA
- Average snowfall days in April: 0.8 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Watterson, IA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in April
Watterson, IA
- Average sunshine days in April: 14.3 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is May (10.6 days).
Average UV index in April
Watterson, IA
- Average UV index in April: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in April
Watterson, IA
- Average cloud cover in April: 43
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in April
Watterson, IA
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Watterson, Iowa, USA
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