Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The commencement of May sees a shift in the average high-temperature, moving from a moderate 56.1°F (13.4°C) in April to an agreeable 68.4°F (20.2°C). During the month of May, the temperature in Ackley falls to an average of 51.6°F (10.9°C).Humidity
In Ackley, the average relative humidity in May is 76%.Rainfall
In Ackley, during May, the rain falls for 19.3 days and regularly aggregates up to 4.61" (117mm) of precipitation. In Ackley, during the entire year, the rain falls for 143.1 days and collects up to 30.24" (768mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Ackley aggregates 0.51" (13mm) of snow. In Ackley, Iowa, during the entire year, snow falls for 51.1 days and aggregates up to 21.26" (540mm) of snow.Daylight
In May, the average length of the day is 14h and 38min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:12 pm. On the last day of May, sunrise is at 5:37 am and sunset at 8:42 pm CDT.
Sunshine
In Ackley, the average sunshine in May is 8.3h.UV index
The months with the highest UV index in Ackley are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In May, a regular UV index of 5 translates into these guidelines:
Exercise prevention - Warding off sunburn is urged. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Ackley?
What is the average humidity in May in Ackley?
How much does it rain in Ackley in May?
What is the last month it snows in Ackley?
How many hours of daylight does Ackley have in May?
When are sunrise and sunset in May in Ackley?
How many hours of sunshine does Ackley have in May?
When is the highest UV index in Ackley?
How high is the UV index in May in Ackley?
Average temperature in May
Ackley, IA
- Average high temperature in May: 68.4°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in May: 51.6°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in May
Ackley, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Ackley, IA
- Average wind speed in May: 9.4mph
The windiest months (with the highest average wind speed) are January and April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).
Average humidity in May
Ackley, IA
- Average humidity in May: 76%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Ackley, IA
- Average rainfall in May: 4.61"
The wettest month (with the highest rainfall) is June (4.76").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in May
Ackley, IA
- Average rainfall days in May: 19.3 days
The month with the highest number of rainy days is June (19.8 days).
The month with the least rainy days is February (4 days).
Average snowfall in May
Ackley, IA
- Average snowfall in May: 0.51"
The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Ackley, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Ackley, IA
- Average daylight in May: 14h and 4min
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 May: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Ackley, IA
- Average sunshine days in May: 9.8 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in May
Ackley, IA
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Ackley, IA
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in May
Ackley, IA
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Ackley, Iowa, USA
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