April weather forecastMerrill, IA
April
Weather in April
April is a refreshing spring month in Merrill, Iowa, with an average temperature ranging between max 57.4°F (14.1°C) and min 40.6°F (4.8°C).Temperature
April's onset witnesses a shift in the average high-temperature, moving from a chilly 45.1°F (7.3°C) in March to a moderate 57.4°F (14.1°C). An average low-temperature of 40.6°F (4.8°C) is anticipated throughout the nights in Merrill during April.Humidity
The average relative humidity in April is 68%.Rainfall
In Merrill, in April, it is raining for 12.4 days, with typically 1.65" (42mm) of accumulated precipitation. In Merrill, during the entire year, the rain falls for 112 days and collects up to 15.71" (399mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 1.6 snowfall days, in April, Merrill aggregates 0.51" (13mm) of snow. In Merrill, during the entire year, snow falls for 34.7 days and aggregates up to 7.52" (191mm) of snow.Daylight
In Merrill, the average length of the day in April is 13h and 25min.On the first day of the month, sunrise is at 7:05 am and sunset at 7:51 pm. On the last day of April, sunrise is at 6:19 am and sunset at 8:24 pm CDT.
Sunshine
In Merrill, Iowa, the average sunshine in April is 8.2h.UV index
In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 4 in April, converts into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Merrill, IA
- Average high temperature in April: 57.4°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in April: 40.6°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in April
Merrill, 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
Merrill, IA
- Average wind speed in April: 11.1mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in April
Merrill, IA
- Average humidity in April: 68%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (66%).
Average rainfall in April
Merrill, IA
- Average rainfall in April: 1.65"
The wettest month (with the highest rainfall) is June (2.48").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in April
Merrill, IA
- Average rainfall days in April: 12.4 days
The month with the highest number of rainy days is June (16.5 days).
The months with the least rainy days are February and December (2.6 days).
Average snowfall in April
Merrill, IA
- Average snowfall in April: 0.51"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Merrill, IA
- Average snowfall days in April: 1.6 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Merrill, IA
- Average daylight in April: 13h and 24min
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: 8h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in April
Merrill, IA
- Average sunshine days in April: 15.2 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in April
Merrill, IA
- Average UV index in April: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Merrill, IA
- Average cloud cover in April: 43
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in April
Merrill, 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).
