April weather forecastO'Leary, IA
April
Weather in April
April is a mild spring month in O'Leary, Iowa, with an average temperature varying between 40.6°F (4.8°C) and 57°F (13.9°C).Temperature
As O'Leary enters April, the average high-temperature increases from the a frosty 44.8°F (7.1°C) of March to a refreshing 57°F (13.9°C). In the month of April, O'Leary's average low-temperature falls to a wintry 40.6°F (4.8°C).Humidity
In O'Leary, the average relative humidity in April is 68%.Rainfall
In O'Leary, during April, the rain falls for 13.3 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 114 rainfall days, and 21.46" (545mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in O'Leary, Iowa. April is the last month it regularly snows in O'Leary. During 1.9 snowfall days, in April, O'Leary aggregates 1.54" (39mm) of snow. Throughout the year, there are 39.2 snowfall days, and 14.84" (377mm) of snow is accumulated.Daylight
In O'Leary, the average length of the day in April is 13h and 25min.On the first day of the month, sunrise is at 7:04 am and sunset at 7:50 pm. On the last day of April, in O'Leary, sunrise is at 6:18 am and sunset at 8:23 pm CDT.
Sunshine
In O'Leary, Iowa, the average sunshine in April is 8.2h.UV index
The average daily maximum UV index in April in O'Leary is 4. 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: In April, a regular UV index of 4 translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
O'Leary, IA
- Average high temperature in April: 57°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (24.8°F).
- Average low temperature in April: 40.6°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (11.5°F).
Average pressure in April
O'Leary, 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
O'Leary, IA
- Average wind speed in April: 11.2mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in April
O'Leary, IA
- Average humidity in April: 68%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (66%).
Average rainfall in April
O'Leary, IA
- Average rainfall in April: 2.52"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in April
O'Leary, IA
- Average rainfall days in April: 13.3 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in April
O'Leary, IA
- Average snowfall in April: 1.54"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
O'Leary, IA
- Average snowfall days in April: 1.9 days
The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
O'Leary, 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 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in April
O'Leary, IA
- Average sunshine days in April: 13.8 days
The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is June (11.7 days).
Average UV index in April
O'Leary, 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
O'Leary, IA
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in April
O'Leary, 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).
