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 arrival of May is marked by a notable increase in high-temperatures, climbing from a chilly 49.3°F (9.6°C) in April to a refreshing 64°F (17.8°C). Throughout the nights in May, Colby experiences an average low-temperature of 45°F (7.2°C).Humidity
April and May, with an average relative humidity of 78%, are the least humid months in Colby.Rainfall
In Colby, in May, during 14.8 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, there are 102.5 rainfall days, and 11.18" (284mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Colby, Wisconsin. During 0.3 snowfall days, in May, Colby aggregates 0.31" (8mm) of snow. In Colby, during the entire year, snow falls for 58.8 days and aggregates up to 10.83" (275mm) of snow.Daylight
In Colby, the average length of the day in May is 14h and 52min.On the first day of the month, sunrise is at 5:49 am and sunset at 8:07 pm. On the last day of May, sunrise is at 5:18 am and sunset at 8:40 pm CDT.
Sunshine
In Colby, the average sunshine in May is 8.3h.UV index
In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: In May, the maximum UV index of 4 translates into these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. 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. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Colby?
What is the least humid month in Colby?
What is the average humidity in May in Colby?
How many days does it rain in May in Colby?
What is the last month it snows in Colby?
What is the average length of the day in May in Colby?
When is the sunrise / sunset in May in Colby?
How long on average sun shines in May in Colby?
How high is the UV index in May in Colby?
Average temperature in May
Colby, WI
- Average high temperature in May: 64°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (18.9°F).
- Average low temperature in May: 45°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (6.4°F).
Average pressure in May
Colby, WI
- Average pressure in May: 29.95"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Colby, WI
- Average wind speed in May: 8.7mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in May
Colby, WI
- Average humidity in May: 78%
The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are April and May (78%).
Average rainfall in May
Colby, WI
- Average rainfall in May: 1.46"
The wettest month (with the highest rainfall) is June (1.61").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in May
Colby, WI
- Average rainfall days in May: 14.8 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (1.5 days).
Average snowfall in May
Colby, WI
- Average snowfall in May: 0.31"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Colby, WI
- Average snowfall days in May: 0.3 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
Colby, WI
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
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 42min).
Average sunshine days in May
Colby, WI
- Average sunshine days in May: 13.2 days
The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in May
Colby, 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, November and December (UV index 1).
Average cloud cover in May
Colby, WI
- Average cloud cover in May: 46
The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in May
Colby, WI
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, March, July, August, September and December (5mi).
Colby, Wisconsin, USA
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