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 brings an increase in the average high-temperature, moving from an enjoyable 64.9°F (18.3°C) in April to a moderately hot 75.4°F (24.1°C). In Waterloo, an average nighttime temperature of 54.5°F (12.5°C) is expected during May.Humidity
The average relative humidity in May is 78%.Rainfall
May is the month with the most rainfall. Rain falls for 17.8 days and accumulates 1.93" (49mm) of precipitation.Snowfall
In Waterloo, snow does not fall in May through September.Daylight
In Waterloo, the average length of the day in May is 14h and 18min.On the first day of the month, sunrise is at 6:31 am and sunset at 8:22 pm. On the last day of May, in Waterloo, sunrise is at 6:06 am and sunset at 8:48 pm EDT.
Sunshine
In Waterloo, Ohio, the average sunshine in May is 9.1h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 6 during May translates into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Waterloo?
What is the average humidity in May in Waterloo?
What is the rainiest month in Waterloo?
How many days does it rain in May in Waterloo?
When it does not snow in Waterloo?
Does it snow in Waterloo in May?
What is the average length of the day in May in Waterloo?
When is the sunrise / sunset in May in Waterloo?
How long on average sun shines in May in Waterloo?
What are the months with the highest UV index in Waterloo?
What is the UV index intensity in May in Waterloo?
Average temperature in May
Waterloo, OH
- Average high temperature in May: 75.4°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in May: 54.5°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in May
Waterloo, OH
- Average pressure in May: 30"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in May
Waterloo, OH
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in May
Waterloo, OH
- Average humidity in May: 78%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (74%).
Average rainfall in May
Waterloo, OH
- Average rainfall in May: 1.93"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is November (0.83").
Average rainfall days in May
Waterloo, OH
- 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 November (8.8 days).
Average snowfall in May
Waterloo, OH
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Waterloo, OH
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Waterloo, OH
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Waterloo, OH
- Average sunshine days in May: 10.3 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in May
Waterloo, OH
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in May
Waterloo, OH
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Waterloo, OH
- Average visibility in May: 5mi
The months with the highest visibility are April, June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September and December (5mi).
Waterloo, Ohio, USA
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