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
May's arrival signals a temperature shift, moving from a frosty 49.6°F (9.8°C) in April to a comfortable 63.9°F (17.7°C). During May, the average low-temperature is a frosty 46°F (7.8°C).Humidity
The months with the lowest humidity in Lewis are April and May, with an average relative humidity of 76%.Rainfall
In Lewis, Wisconsin, during May, the rain falls for 15.4 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Lewis, during the entire year, the rain falls for 122.5 days and collects up to 20.87" (530mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 1 snowfall days, in May, Lewis aggregates 0.59" (15mm) of snow. Throughout the year, in Lewis, there are 79 snowfall days, and 24.72" (628mm) of snow is accumulated.Daylight
In May, the average length of the day in Lewis, Wisconsin, is 14h and 57min.On the first day of the month, sunrise is at 5:55 am and sunset at 8:17 pm. On the last day of May, sunrise is at 5:23 am and sunset at 8:51 pm CDT.
Sunshine
The average sunshine in May in Lewis is 8.3h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 5 during May morphs into the following directions:
Take precautions - Protection against skin and eye damage is obliged. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Lewis?
What are the least humid months in Lewis?
What is the average humidity in May in Lewis?
How many days does it rain in May in Lewis?
What is the last month it snows in Lewis?
How many hours of daylight does Lewis have in May?
What time are sunrise and sunset in May in Lewis?
How long on average sun shines in May in Lewis?
What is the UV index intensity in May in Lewis?
Average temperature in May
Lewis, WI
- Average high temperature in May: 63.9°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (17.8°F).
- Average low temperature in May: 46°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (4.8°F).
Average pressure in May
Lewis, WI
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Lewis, WI
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in May
Lewis, WI
- Average humidity in May: 76%
The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in May
Lewis, WI
- Average rainfall in May: 2.6"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in May
Lewis, WI
- Average rainfall days in May: 15.4 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is January (2.3 days).
Average snowfall in May
Lewis, WI
- Average snowfall in May: 0.59"
The month with the highest snowfall is December (5.47").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Lewis, WI
- Average snowfall days in May: 1 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Lewis, WI
- Average daylight in May: 14h and 5min
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 48min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in May
Lewis, WI
- Average sunshine days in May: 12.5 days
The month with the most sunshine days is October (16.3 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in May
Lewis, WI
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Lewis, WI
- Average cloud cover in May: 46
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in May
Lewis, WI
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Lewis, Wisconsin, USA
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