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
Noticing a change, the average high-temperature during May moves from April's fresh 51.1°F (10.6°C) to a refreshing 64.6°F (18.1°C). Altoona's nights in May cool down to an average low-temperature of 46.2°F (7.9°C).Humidity
In Altoona, the average relative humidity in May is 78%.Rainfall
In May, the rain falls for 16.8 days. Throughout May, 3.46" (88mm) of precipitation is accumulated. Throughout the year, in Altoona, there are 128.5 rainfall days, and 26.22" (666mm) of precipitation is accumulated.Snowfall
Months with snowfall in Altoona, Wisconsin, are January through May, October through December. May is the last month it regularly snows in Altoona, Wisconsin. During 0.7 snowfall days, in May, Altoona aggregates 0.43" (11mm) of snow. In Altoona, Wisconsin, during the entire year, snow falls for 57.9 days and aggregates up to 25.87" (657mm) of snow.Daylight
The average length of the day in May is 14h and 51min.On the first day of the month, sunrise is at 5:54 am and sunset at 8:11 pm. On the last day of May, sunrise is at 5:23 am and sunset at 8:44 pm CDT.
Sunshine
The average sunshine in May is 8.3h.UV index
The average daily maximum UV index in May in Altoona is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. To cut down UV radiation exposure by about half, sport a wide-brim hat. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
What are the temperatures in Altoona in May?
What is the average humidity in May in Altoona?
How much does it rain in Altoona in May?
What is the last month it snows in Altoona?
What is the average length of the day in May in Altoona?
When are sunrise and sunset in May in Altoona?
How long on average sun shines in May in Altoona?
What is the UV index reading in May in Altoona?
Average temperature in May
Altoona, WI
- Average high temperature in May: 64.6°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 (19.4°F).
- Average low temperature in May: 46.2°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in May
Altoona, WI
- Average pressure in May: 29.94"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Altoona, WI
- Average wind speed in May: 8.1mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in May
Altoona, WI
- Average humidity in May: 78%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is April (77%).
Average rainfall in May
Altoona, WI
- Average rainfall in May: 3.46"
The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in May
Altoona, WI
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (2.7 days).
Average snowfall in May
Altoona, WI
- Average snowfall in May: 0.43"
The month with the highest snowfall is February (7.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Altoona, WI
- Average snowfall days in May: 0.7 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
Altoona, 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 54min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in May
Altoona, WI
- Average sunshine days in May: 11.6 days
The month with the most sunshine days is January (17.4 days).
The month with the least sunshine days is June (10 days).
Average UV index in May
Altoona, 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
Altoona, WI
- Average cloud cover in May: 45
The months with the most cloud cover are January, February and December (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in May
Altoona, 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 and February (4mi).
Altoona, Wisconsin, USA
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