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
As Athelstan enters May, the average high-temperature increases from the an enjoyable 60.8°F (16°C) of April to a pleasant 70.3°F (21.3°C). Throughout the month of May, Athelstan witnesses an average low-temperature of 53.6°F (12°C).Humidity
The average relative humidity in May is 78%.Rainfall
In Athelstan, during May, the rain falls for 17.8 days and regularly aggregates up to 3.7" (94mm) of precipitation. In Athelstan, Iowa, during the entire year, the rain falls for 123.8 days and collects up to 21.93" (557mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.2 snowfall days, in May, Athelstan aggregates 0.04" (1mm) of snow. Throughout the year, in Athelstan, there are 28.8 snowfall days, and 10.51" (267mm) of snow is accumulated.Daylight
In May, the average length of the day in Athelstan is 14h and 28min.On the first day of the month, sunrise is at 6:15 am and sunset at 8:14 pm. On the last day of May, sunrise is at 5:49 am and sunset at 8:42 pm CDT.
Sunshine
In May, the average sunshine is 8.6h.UV index
In Athelstan, Iowa, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In May, a daily UV index of 5 turns into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What are the temperatures in Athelstan in May?
What is the average humidity in May in Athelstan?
How much does it rain in Athelstan in May?
What is the last month it snows in Athelstan?
What is the average length of the day in May in Athelstan?
When are sunrise and sunset in May in Athelstan?
How many hours of sunshine does Athelstan have in May?
What is the UV index reading in May in Athelstan?
Average temperature in May
Athelstan, IA
- Average high temperature in May: 70.3°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in May: 53.6°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in May
Athelstan, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Athelstan, IA
- Average wind speed in May: 8.6mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in May
Athelstan, IA
- Average humidity in May: 78%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Athelstan, IA
- Average rainfall in May: 3.7"
The wettest month (with the highest rainfall) is June (3.78").
The driest month (with the least rainfall) is February (0.63").
Average rainfall days in May
Athelstan, IA
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (3.9 days).
Average snowfall in May
Athelstan, IA
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Athelstan, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Athelstan, IA
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in May
Athelstan, IA
- Average sunshine days in May: 11.1 days
The month with the most sunshine days is November (21.9 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in May
Athelstan, IA
- Average UV index in May: 5
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 May
Athelstan, IA
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and September (Cloud cover 28).
Average visibility in May
Athelstan, IA
- Average visibility in May: 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).
Athelstan, Iowa, USA
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