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
Mettawa's May weather shows an increase in high-temperatures, moving from April's fresh 54.1°F (12.3°C) to a comfortable 65.8°F (18.8°C). Mettawa experiences a steady low-temperature of 50°F (10°C) throughout May.Humidity
The average relative humidity in May is 77%.Rainfall
In Mettawa, in May, it is raining for 17.8 days, with typically 3.31" (84mm) of accumulated precipitation. Throughout the year, in Mettawa, there are 147.3 rainfall days, and 27.44" (697mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.2 snowfall days, in May, Mettawa aggregates 0.08" (2mm) of snow. In Mettawa, during the entire year, snow falls for 48.2 days and aggregates up to 18.86" (479mm) of snow.Daylight
In May, the average length of the day in Mettawa is 14h and 37min.On the first day of May, sunrise is at 5:45 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:21 pm CDT.
Sunshine
In Mettawa, the average sunshine in May is 8.5h.UV index
In Mettawa, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the maximum UV index of 5 suggests these recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Mettawa?
What is the average humidity in May in Mettawa?
How many days does it rain in May in Mettawa?
What is the last month it snows in Mettawa?
What is the average length of the day in May in Mettawa?
When is the sunrise / sunset in May in Mettawa?
How many hours of sunshine does Mettawa have in May?
What is the UV index intensity in May in Mettawa?
Average temperature in May
Mettawa, IL
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 50°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in May
Mettawa, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Mettawa, IL
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in May
Mettawa, IL
- Average humidity in May: 77%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Mettawa, IL
- Average rainfall in May: 3.31"
The wettest month (with the highest rainfall) is June (3.54").
The driest months (with the least rainfall) are November and December (1.3").
Average rainfall days in May
Mettawa, IL
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in May
Mettawa, IL
- Average snowfall in May: 0.08"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Mettawa, IL
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Mettawa, IL
- 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 months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Mettawa, IL
- Average sunshine days in May: 10.5 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (10 days).
Average UV index in May
Mettawa, IL
- Average UV index in May: 5
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Mettawa, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in May
Mettawa, IL
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Mettawa, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location