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
Waterloo's transition into May brings a rise in the average high-temperature, moving from a cool 53.6°F (12°C) in April to a comfortable 65.8°F (18.8°C). In May, Waterloo records an average nighttime temperature of 48.6°F (9.2°C).Humidity
In May, the average relative humidity is 79%.Rainfall
In Waterloo, in May, it is raining for 16 days, with typically 2.52" (64mm) of accumulated precipitation. In Waterloo, during the entire year, the rain falls for 132.3 days and collects up to 21.38" (543mm) of precipitation.Snowfall
In Waterloo, snow does not fall in May through September.Daylight
In May, the average length of the day in Waterloo is 14h and 41min.On the first day of May, sunrise is at 5:48 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:28 pm CDT.
Sunshine
The average sunshine in May in Waterloo is 8.5h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during May leads to these instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Waterloo in May?
What is the average humidity in May 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?
How many hours of daylight does Waterloo have in May?
When is the sunrise / sunset in May in Waterloo?
How many hours of sunshine does Waterloo have in May?
What are the months with the highest UV index in Waterloo?
How high is the UV index in May in Waterloo?
Average temperature in May
Waterloo, WI
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in May: 48.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).
Average pressure in May
Waterloo, WI
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Waterloo, WI
- Average wind speed in May: 8.6mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in May
Waterloo, WI
- Average humidity in May: 79%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in May
Waterloo, WI
- Average rainfall in May: 2.52"
The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days in May
Waterloo, WI
- Average rainfall days in May: 16 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in May
Waterloo, WI
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Waterloo, WI
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Waterloo, WI
- 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 0min).
- Average sunshine in May: 8h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in May
Waterloo, WI
- Average sunshine days in May: 12.1 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in May
Waterloo, WI
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in May
Waterloo, WI
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in May
Waterloo, WI
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Waterloo, Wisconsin, USA
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