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 brings a rise in the average high-temperature, elevating from a chilly 48.7°F (9.3°C) in March to a mild 60.4°F (15.8°C). Throughout April, an average low-temperature of 42.6°F (5.9°C) is expected.Humidity
In April, the average relative humidity in Diagonal is 74%.Rainfall
In Diagonal, in April, it is raining for 13.1 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, there are 126.9 rainfall days, and 22.6" (574mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Diagonal. In Diagonal, in April, during 0.8 snowfall days, 1.5" (38mm) of snow is typically accumulated. Throughout the year, in Diagonal, there are 28.7 snowfall days, and 11.85" (301mm) of snow is accumulated.Daylight
The average length of the day in April in Diagonal, Iowa, is 13h and 20min.On the first day of April in Diagonal, sunrise is at 6:59 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:13 pm CDT.
Sunshine
In Diagonal, Iowa, the average sunshine in April is 8.2h.UV index
In April, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 4 during April leads to these instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What are the temperatures in Diagonal in April?
What is the average humidity in April in Diagonal?
How many days does it rain in April in Diagonal?
How many days does it snow in April in Diagonal?
What is the average length of the day in April in Diagonal?
What time are sunrise and sunset in April in Diagonal?
How many hours of sunshine does Diagonal have in April?
How high is the UV index in April in Diagonal?
Average temperature in April
Diagonal, 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
Diagonal, 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
Diagonal, 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
Diagonal, 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
Diagonal, 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
Diagonal, 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
Diagonal, 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
Diagonal, 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
Diagonal, 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 36min).
Average sunshine days in April
Diagonal, 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
Diagonal, 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
Diagonal, 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
Diagonal, 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).
Diagonal, Iowa, USA
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