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
A rise in the average high-temperature is observed during April, moving from a cold 42.1°F (5.6°C) in March to a mild 55.8°F (13.2°C). In April, Duncan experiences a temperature dip to an average of 39.9°F (4.4°C) at night.Humidity
The average relative humidity in April is 70%.Rainfall
In Duncan, in April, during 14.5 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. In Duncan, during the entire year, the rain falls for 127.1 days and collects up to 24.8" (630mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Duncan, in April, snow falls for 2.6 days, with typically accumulated 1.77" (45mm) of snow. Throughout the year, there are 51.2 snowfall days, and 20.91" (531mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 26min.On the first day of the month, sunrise is at 6:55 am and sunset at 7:41 pm. On the last day of April, sunrise is at 6:08 am and sunset at 8:15 pm CDT.
Sunshine
The average sunshine in April in Duncan is 7.7h.UV index
The average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 3 during April leads to these advisories:
Make use of precautions - It is urged to ward off sun damage. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Duncan in April?
What is the average humidity in April?
How much does it rain in April?
How many days does it snow in April?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Duncan have in April?
How high is the UV index in April?
Average temperature in April
Duncan, IA
- Average high temperature in April: 55.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in April: 39.9°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (10.4°F).
Average pressure in April
Duncan, 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
Duncan, IA
- Average wind speed in April: 11mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in April
Duncan, IA
- Average humidity in April: 70%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (69%).
Average rainfall in April
Duncan, IA
- Average rainfall in April: 2.76"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in April
Duncan, IA
- Average rainfall days in April: 14.5 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in April
Duncan, IA
- Average snowfall in April: 1.77"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Duncan, IA
- Average snowfall days in April: 2.6 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Duncan, 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 42min).
Average sunshine days in April
Duncan, IA
- Average sunshine days in April: 12.3 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in April
Duncan, 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
Duncan, IA
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in April
Duncan, 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).
Duncan, Iowa, USA
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