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 Riverwoods welcomes May, the average high-temperature sees a rise, transitioning from a cool 52.9°F (11.6°C) in April to a refreshing 64.2°F (17.9°C). Riverwoods experiences a nighttime temperature average of 50.4°F (10.2°C) during May.Humidity
In Riverwoods, the average relative humidity in May is 77%.Rainfall
The month with the most rainfall in Riverwoods is May, when the rain falls for 16.6 days and typically aggregates up to 3.39" (86mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Riverwoods. During 0.1 snowfall days, in May, Riverwoods aggregates 0.08" (2mm) of snow. Throughout the year, in Riverwoods, there are 48.6 snowfall days, and 18.78" (477mm) of snow is accumulated.Daylight
The average length of the day in May in Riverwoods is 14h and 36min.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 8:20 pm CDT.
Sunshine
In Riverwoods, Illinois, the average sunshine in May is 8.7h.UV index
In Riverwoods, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In May, the maximum UV index of 5 suggests these recommendations:
Undertake precautions - Guarding against sun damage is counselled. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Riverwoods in May?
What is the average humidity in May in Riverwoods?
What is the wettest month in Riverwoods?
How many days does it rain in May in Riverwoods?
What is the last month it snows in Riverwoods?
What is the average length of the day in May in Riverwoods?
When is the sunrise / sunset in May in Riverwoods?
How long on average sun shines in May in Riverwoods?
What is the UV index intensity in May in Riverwoods?
Average temperature in May
Riverwoods, IL
- Average high temperature in May: 64.2°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in May: 50.4°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in May
Riverwoods, 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
Riverwoods, IL
- Average wind speed in May: 8.6mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in May
Riverwoods, IL
- Average humidity in May: 77%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Riverwoods, IL
- Average rainfall in May: 3.39"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in May
Riverwoods, IL
- Average rainfall days in May: 16.6 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in May
Riverwoods, IL
- Average snowfall in May: 0.08"
The months with the highest snowfall are January and February (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Riverwoods, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Riverwoods, 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 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Riverwoods, IL
- Average sunshine days in May: 12.7 days
The month with the most sunshine days is October (17.3 days).
The month with the least sunshine days is February (10.4 days).
Average UV index in May
Riverwoods, IL
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Riverwoods, IL
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Riverwoods, IL
- 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).
Riverwoods, Illinois, USA
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