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 average high-temperature increases in May, moving from a fresh 50°F (10°C) in April to an enjoyable 61.9°F (16.6°C). Nighttime temperature lowers to an average of 47.8°F (8.8°C) in May.Humidity
In May, the average relative humidity is 77%.Rainfall
In West Allis, during May, the rain falls for 14.3 days and regularly aggregates up to 2.2" (56mm) of precipitation. In West Allis, Wisconsin, during the entire year, the rain falls for 126 days and collects up to 19.37" (492mm) of precipitation.Snowfall
May through September are months without snowfall in West Allis, Wisconsin.Daylight
In May, the average length of the day in West Allis is 14h and 41min.On the first day of the month, sunrise is at 5:44 am and sunset at 7:53 pm. On the last day of May, in West Allis, Wisconsin, sunrise is at 5:15 am and sunset at 8:24 pm CDT.
Sunshine
In May, the average sunshine is 8.4h.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 radiation for the average person.Note: A maximum high UV index of 4 in May translates into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
What is the usual temperature for West Allis in May?
What is the average humidity in May in West Allis?
How many days does it rain in May in West Allis?
When it does not snow in West Allis?
Does it snow in West Allis in May?
What is the average length of the day in May in West Allis?
What time are sunrise and sunset in May in West Allis?
How long on average sun shines in May in West Allis?
What is the UV index intensity in May in West Allis?
Average temperature in May
West Allis, WI
- Average high temperature in May: 61.9°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in May: 47.8°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in May
West Allis, WI
- Average pressure in May: 29.96"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
West Allis, WI
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in May
West Allis, WI
- Average humidity in May: 77%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).
Average rainfall in May
West Allis, WI
- Average rainfall in May: 2.2"
The wettest month (with the highest rainfall) is July (2.56").
The driest months (with the least rainfall) are February and December (0.83").
Average rainfall days in May
West Allis, WI
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in May
West Allis, WI
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.03").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
West Allis, WI
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
West Allis, WI
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
West Allis, WI
- Average sunshine days in May: 14 days
The month with the most sunshine days is November (17.4 days).
The months with the least sunshine days are July and August (12.7 days).
Average UV index in May
West Allis, WI
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
West Allis, WI
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in May
West Allis, WI
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
West Allis, Wisconsin, USA
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