May weather forecastNiagara, WI
May
Weather in May
The last month of the spring, May, is an enjoyable month in Niagara, Wisconsin, with an average temperature fluctuating between 63.1°F (17.3°C) and 42.6°F (5.9°C).Temperature
The shift into May is marked by a considerable temperature increase, with the average high-temperature soaring from a chilly 47.5°F (8.6°C) in April to a refreshing 63.1°F (17.3°C). During the month of May, Niagara anticipates a mean low-temperature of 42.6°F (5.9°C).Humidity
With an average relative humidity of 72%, May is the least humid month.Rainfall
In Niagara, in May, during 15.3 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. Throughout the year, there are 137.4 rainfall days, and 22.83" (580mm) of precipitation is accumulated.Snowfall
Months with snowfall in Niagara are January through May, October through December. May is the last month it regularly snows. During 0.8 snowfall days, in May, Niagara aggregates 0.2" (5mm) of snow. Throughout the year, in Niagara, there are 92.1 snowfall days, and 41.26" (1048mm) of snow is accumulated.Daylight
The average length of the day in May in Niagara is 14h and 57min.On the first day of May in Niagara, sunrise is at 5:38 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:05 am and sunset at 8:33 pm CDT.
Sunshine
In May, the average sunshine is 8.7h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The average daily UV index of 4 in May transforms into the following instructions:
Be vigilant - Suggestions to stave off sun damage are provided. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Niagara, WI
- Average high temperature in May: 63.1°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (21°F).
- Average low temperature in May: 42.6°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (10.2°F).
Average pressure in May
Niagara, WI
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Niagara, WI
- Average wind speed in May: 7.4mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in May
Niagara, WI
- Average humidity in May: 72%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (72%).
Average rainfall in May
Niagara, WI
- Average rainfall in May: 2.44"
The wettest month (with the highest rainfall) is June (2.6").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in May
Niagara, WI
- Average rainfall days in May: 15.3 days
The months with the highest number of rainy days are May, June and July (15.3 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in May
Niagara, WI
- Average snowfall in May: 0.2"
The month with the highest snowfall is February (9.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Niagara, WI
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is January (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Niagara, WI
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in May
Niagara, WI
- Average sunshine days in May: 12.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in May
Niagara, WI
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in May
Niagara, WI
- Average cloud cover in May: 43
The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in May
Niagara, WI
- Average visibility in May: 6mi
The months with the highest visibility are May, June, October and November (6mi).
The month with the lowest visibility is February (4mi).
