May weather forecastNapoleon, MI
May
Weather in May
The last month of the spring, May, is a refreshing month in Napoleon, Michigan, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 66.7°F (19.3°C).Temperature
Napoleon sees an increase in average high-temperatures during May, moving from a fresh 54.1°F (12.3°C) in April to a refreshing 66.7°F (19.3°C). During May, the nighttime temperature averages to a chilly 49.6°F (9.8°C).Humidity
In May, the average relative humidity is 80%.Rainfall
May is the month with the most rainfall. Rain falls for 18.1 days and accumulates 2.83" (72mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Napoleon. During 0.2 snowfall days, in May, Napoleon aggregates 0.2" (5mm) of snow. In Napoleon, during the entire year, snow falls for 51.4 days and aggregates up to 13.11" (333mm) of snow.Daylight
In Napoleon, the average length of the day in May is 14h and 36min.On the first day of May, sunrise is at 6:31 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 9:06 pm EDT.
Sunshine
In Napoleon, the average sunshine in May is 8.3h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In May, the maximum UV index of 5 suggests this advice:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Napoleon, MI
- Average high temperature in May: 66.7°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 49.6°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 (17.1°F).
Average pressure in May
Napoleon, MI
- Average pressure in May: 29.98"Hg
The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Napoleon, MI
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in May
Napoleon, MI
- Average humidity in May: 80%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is April (77%).
Average rainfall in May
Napoleon, MI
- Average rainfall in May: 2.83"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days in May
Napoleon, MI
- Average rainfall days in May: 18.1 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in May
Napoleon, MI
- Average snowfall in May: 0.2"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Napoleon, MI
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Napoleon, MI
- Average daylight in May: 14h and 36min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in May
Napoleon, MI
- Average sunshine days in May: 9.9 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in May
Napoleon, MI
- 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 and December (UV index 1).
Average cloud cover in May
Napoleon, MI
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Napoleon, MI
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).
