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 onset of May marks an increase in the average high-temperature, moving from a cool 55.2°F (12.9°C) in April to a refreshing 67.3°F (19.6°C). During May, Portage sees a mean low-temperature of 49.6°F (9.8°C).Humidity
The average relative humidity in May is 80%.Rainfall
May is the month with the most rainfall. Rain falls for 18.3 days and accumulates 3.62" (92mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Portage aggregates 0.12" (3mm) of snow. Throughout the year, there are 62.4 snowfall days, and 20.24" (514mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 36min.On the first day of May, sunrise is at 6:36 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 9:11 pm EDT.
Sunshine
The average sunshine in May is 8.5h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, a daily UV index of 5 turns into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
What is the rainiest month?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Portage have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Portage have in May?
How high is the UV index in May?
Average temperature in May
Portage, MI
- Average high temperature in May: 67.3°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in May: 49.6°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in May
Portage, MI
- Average pressure in May: 29.97"Hg
The months with the highest atmospheric pressure are January, March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Portage, MI
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).
Average humidity in May
Portage, MI
- Average humidity in May: 80%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in May
Portage, MI
- Average rainfall in May: 3.62"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is November (1.73").
Average rainfall days in May
Portage, MI
- Average rainfall days in May: 18.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in May
Portage, MI
- Average snowfall in May: 0.12"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Portage, MI
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Portage, MI
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in May
Portage, MI
- Average sunshine days in May: 10.9 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is February (9.8 days).
Average UV index in May
Portage, MI
- Average UV index in May: 5
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Portage, MI
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Portage, MI
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, October and November (6mi).
The months with the lowest visibility are January, February, August, September and December (5mi).
Portage, Michigan, USA
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