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
Rowan's weather shows a temperature rise with the arrival of May, moving from a refreshing 55.8°F (13.2°C) in April to an agreeable 68°F (20°C). May nights are marked by an average temperature drop to a cool 51.8°F (11°C).Humidity
In May, the average relative humidity is 73%.Rainfall
In Rowan, in May, it is raining for 18.3 days, with typically 3.39" (86mm) of accumulated precipitation. Throughout the year, there are 136.3 rainfall days, and 26.18" (665mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Rowan aggregates 0.35" (9mm) of snow. Throughout the year, there are 44.7 snowfall days, and 20.51" (521mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 39min.On the first day of the month, sunrise is at 6:07 am and sunset at 8:15 pm. On the last day of May, sunrise is at 5:38 am and sunset at 8:45 pm CDT.
Sunshine
In Rowan, Iowa, the average sunshine in May is 8.5h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 5 during May translates into the following guidance:
Take precautions - Protection against sun damage is advised. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Rowan have in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
How high is the UV index in May in Rowan?
Average temperature in May
Rowan, IA
- Average high temperature in May: 68°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in May: 51.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in May
Rowan, 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 (29.88"Hg).
Average wind speed in May
Rowan, IA
- Average wind speed in May: 9.6mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in May
Rowan, IA
- Average humidity in May: 73%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Rowan, IA
- Average rainfall in May: 3.39"
The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in May
Rowan, IA
- Average rainfall days in May: 18.3 days
The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in May
Rowan, IA
- Average snowfall in May: 0.35"
The month with the highest snowfall is February (5.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Rowan, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rowan, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Rowan, IA
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (10 days).
Average UV index in May
Rowan, IA
- Average UV index in May: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Rowan, IA
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in May
Rowan, IA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Rowan, Iowa, USA
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