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's onset brings a rise in the average high-temperature, moving from a frosty 48.6°F (9.2°C) in March to a moderate 60.1°F (15.6°C). Mercer experiences a consistent average temperature of 42.4°F (5.8°C) throughout the nights in April.Humidity
In April, the average relative humidity is 72%.Rainfall
In Mercer, in April, it is raining for 12.3 days, with typically 1.69" (43mm) of accumulated precipitation. In Mercer, Iowa, during the entire year, the rain falls for 115.1 days and collects up to 19.21" (488mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows. During 0.9 snowfall days, in April, Mercer aggregates 1.02" (26mm) of snow. Throughout the year, there are 27.6 snowfall days, and 8.15" (207mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 20min.On the first day of April, sunrise is at 7:00 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:14 pm CDT.
Sunshine
In April, the average sunshine is 8.1h.UV index
In Mercer, 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 average individuals.Note: A maximum UV index of 4 in April translates into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in April?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows?
How many hours of daylight does Mercer have in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Mercer have in April?
How high is the UV index in April?
Average temperature in April
Mercer, IA
- Average high temperature in April: 60.1°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in April: 42.4°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in April
Mercer, 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
Mercer, IA
- Average wind speed in April: 10.5mph
The windiest months (with the highest average wind speed) are March and April (10.5mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in April
Mercer, IA
- Average humidity in April: 72%
The months with the highest relative humidity are January and June (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Mercer, IA
- Average rainfall in April: 1.69"
The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in April
Mercer, IA
- Average rainfall days in April: 12.3 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is February (3 days).
Average snowfall in April
Mercer, IA
- Average snowfall in April: 1.02"
The month with the highest snowfall is January (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Mercer, IA
- Average snowfall days in April: 0.9 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
Mercer, IA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
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 24min).
Average sunshine days in April
Mercer, 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 May (12 days).
Average UV index in April
Mercer, 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
Mercer, IA
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in April
Mercer, 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).
Mercer, Iowa, USA
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