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
As April transitions into May, a change in temperatures is observed, with average highs moving from a fresh 53.2°F (11.8°C) to a comfortable 65.8°F (18.8°C). The average low-temperature in Portage during May nights is a chilly 47.8°F (8.8°C).Humidity
In Portage, the average relative humidity in May is 79%.Rainfall
In Portage, during May, the rain falls for 16.6 days and regularly aggregates up to 3.39" (86mm) of precipitation. Throughout the year, in Portage, there are 128.9 rainfall days, and 27.68" (703mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Portage. May is the last month it regularly snows in Portage, Wisconsin. During 0.3 snowfall days, in May, Portage aggregates 0.08" (2mm) of snow. Throughout the year, there are 48.4 snowfall days, and 20.28" (515mm) of snow is accumulated.Daylight
In Portage, the average length of the day in May is 14h and 44min.On the first day of the month, sunrise is at 5:49 am and sunset at 8:00 pm. On the last day of May, in Portage, Wisconsin, sunrise is at 5:19 am and sunset at 8:31 pm CDT.
Sunshine
The average sunshine in May in Portage is 8.2h.UV index
In Portage, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 in May converts into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Portage?
What is the average humidity in May in Portage?
How much does it rain in Portage in May?
What is the last month it snows in Portage?
How many hours of daylight does Portage have in May?
What time are sunrise and sunset in May in Portage?
How many hours of sunshine does Portage have in May?
What is the UV index intensity in May in Portage?
Average temperature in May
Portage, WI
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in May: 47.8°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in May
Portage, WI
- Average pressure in May: 29.96"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Portage, WI
- Average wind speed in May: 8.6mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in May
Portage, WI
- Average humidity in May: 79%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in May
Portage, WI
- Average rainfall in May: 3.39"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in May
Portage, WI
- Average rainfall days in May: 16.6 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in May
Portage, WI
- Average snowfall in May: 0.08"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Portage, WI
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Portage, WI
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 8h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in May
Portage, WI
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in May
Portage, 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, November and December (UV index 1).
Average cloud cover in May
Portage, WI
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in May
Portage, WI
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
Portage, Wisconsin, USA
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