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 commencement of April sees a shift in the average high-temperature, moving from an icy 41°F (5°C) in March to a cool 54°F (12.2°C). During the April nights, an average temperature of 37.4°F (3°C) is observed in Calmar.Humidity
In Calmar, the average relative humidity in April is 77%.Rainfall
In Calmar, in April, during 16.5 rainfall days, 3.39" (86mm) of precipitation is typically accumulated. In Calmar, during the entire year, the rain falls for 149 days and collects up to 30.59" (777mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Calmar, during April, snow falls for 3.8 days and regularly aggregates up to 2.44" (62mm) of snow. Throughout the year, in Calmar, there are 60.9 snowfall days, and 24.37" (619mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 26min.On the first day of the month, sunrise is at 6:47 am and sunset at 7:34 pm. On the last day of April, sunrise is at 6:00 am and sunset at 8:08 pm CDT.
Sunshine
In April, the average sunshine is 7.4h.UV index
In Calmar, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 3 in April translates into this advice:
Prioritize safety - Recommendations to avert sunburn are shared. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Boost your sun resistance with garments that are densely woven yet spacious. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April?
What is the average humidity in April?
How much does it rain in April?
How many days does it snow in April?
How many hours of daylight does Calmar have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Calmar have in April?
How high is the UV index in April?
Average temperature in April
Calmar, IA
- Average high temperature in April: 54°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in April: 37.4°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in April
Calmar, IA
- Average pressure in April: 29.94"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in April
Calmar, IA
- Average wind speed in April: 10.4mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in April
Calmar, IA
- Average humidity in April: 77%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).
Average rainfall in April
Calmar, IA
- Average rainfall in April: 3.39"
The wettest month (with the highest rainfall) is June (5.04").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in April
Calmar, IA
- Average rainfall days in April: 16.5 days
The months with the highest number of rainy days are May and June (20.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in April
Calmar, IA
- Average snowfall in April: 2.44"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Calmar, IA
- Average snowfall days in April: 3.8 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Calmar, 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 2min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in April
Calmar, IA
- Average sunshine days in April: 10.3 days
The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.1 days).
Average UV index in April
Calmar, IA
- Average UV index in April: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in April
Calmar, IA
- Average cloud cover in April: 50
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in April
Calmar, IA
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
Calmar, Iowa, USA
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