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 arrival of May brings a temperature shift, with the average high-temperature escalating from a moderate 55.8°F (13.2°C) in April to an enjoyable 66.9°F (19.4°C). Oelwein records a steady low-temperature average of 50.5°F (10.3°C) during May.Humidity
In Oelwein, the average relative humidity in May is 78%.Rainfall
In Oelwein, Iowa, in May, it is raining for 18.7 days, with typically 4.41" (112mm) of accumulated precipitation. In Oelwein, during the entire year, the rain falls for 135.7 days and collects up to 29.65" (753mm) 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, Oelwein aggregates 0.24" (6mm) of snow. Throughout the year, there are 42.1 snowfall days, and 18.39" (467mm) of snow is accumulated.Daylight
In Oelwein, the average length of the day in May is 14h and 39min.On the first day of the month, sunrise is at 6:00 am and sunset at 8:08 pm. On the last day of May, sunrise is at 5:32 am and sunset at 8:38 pm CDT.
Sunshine
In May, the average sunshine is 8.4h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In May, the maximum UV index of 5 transforms into these recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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 much does it rain in May?
What is the last month it snows?
What is the average length of the day in May in Oelwein?
What time are sunrise and sunset in May?
How many hours of sunshine does Oelwein have in May?
What is the UV index reading in May?
Average temperature in May
Oelwein, IA
- Average high temperature in May: 66.9°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in May: 50.5°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in May
Oelwein, IA
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Oelwein, IA
- Average wind speed in May: 9.4mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in May
Oelwein, IA
- Average humidity in May: 78%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Oelwein, IA
- Average rainfall in May: 4.41"
The wettest month (with the highest rainfall) is June (5").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in May
Oelwein, IA
- Average rainfall days in May: 18.7 days
The month with the highest number of rainy days is June (19.4 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in May
Oelwein, IA
- Average snowfall in May: 0.24"
The month with the highest snowfall is February (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Oelwein, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Oelwein, 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 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Oelwein, IA
- Average sunshine days in May: 10.1 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in May
Oelwein, 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, November and December (UV index 1).
Average cloud cover in May
Oelwein, IA
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
Oelwein, IA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Oelwein, Iowa, USA
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