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 shift into May is accompanied by a temperature increase, with the average high-temperature rising from a mild 59.5°F (15.3°C) in April to a pleasant 70°F (21.1°C). During May, Ollie observes a consistent average nighttime temperature of 53.2°F (11.8°C).Humidity
In May, the average relative humidity is 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 17.7 days and typically aggregates up to 4.17" (106mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Ollie aggregates 0.04" (1mm) of snow. Throughout the year, there are 32.8 snowfall days, and 12.56" (319mm) of snow is accumulated.Daylight
In Ollie, the average length of the day in May is 14h and 31min.On the first day of May in Ollie, sunrise is at 6:04 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:34 pm CDT.
Sunshine
In May, the average sunshine in Ollie is 8.7h.UV index
The average daily maximum UV index in May in Ollie is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 5 in May translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Ollie in May?
What is the average humidity in May in Ollie?
What is the wettest month in Ollie?
How many days does it rain in May in Ollie?
What is the last month it snows in Ollie?
What is the average length of the day in May in Ollie?
What time are sunrise and sunset in May in Ollie?
How long on average sun shines in May in Ollie?
How high is the UV index in May in Ollie?
Average temperature in May
Ollie, IA
- Average high temperature in May: 70°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in May: 53.2°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in May
Ollie, IA
- Average pressure in May: 29.94"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
Ollie, IA
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in May
Ollie, IA
- Average humidity in May: 79%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Ollie, IA
- Average rainfall in May: 4.17"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in May
Ollie, IA
- Average rainfall days in May: 17.7 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in May
Ollie, IA
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Ollie, IA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Ollie, IA
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in May
Ollie, IA
- Average sunshine days in May: 11 days
The month with the most sunshine days is December (19.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in May
Ollie, IA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in May
Ollie, IA
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in May
Ollie, IA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Ollie, Iowa, USA
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