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
A rise in the average high-temperature is observed during May, moving from a fresh 53.6°F (12°C) in April to a refreshing 65.3°F (18.5°C). May brings with it a nighttime average temperature of 49.6°F (9.8°C).Humidity
In May, the average relative humidity in Round Lake is 78%.Rainfall
In Round Lake, during May, the rain falls for 17 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Round Lake, Illinois, during the entire year, the rain falls for 142.3 days and collects up to 21.97" (558mm) of precipitation.Snowfall
Months with snowfall in Round Lake, Illinois, are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Round Lake aggregates 0.04" (1mm) of snow. In Round Lake, during the entire year, snow falls for 49.5 days and aggregates up to 13.54" (344mm) of snow.Daylight
The average length of the day in May in Round Lake is 14h and 37min.On the first day of the month, sunrise is at 5:46 am and sunset at 7:52 pm. On the last day of May, sunrise is at 5:18 am and sunset at 8:22 pm CDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 5 during May morphs into the following directions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
What is the average May temperature in Round Lake?
What is the average humidity in May in Round Lake?
How much does it rain in Round Lake in May?
What is the last month it snows in Round Lake?
How many hours of daylight does Round Lake have in May?
When is the sunrise / sunset in May in Round Lake?
How long on average sun shines in May in Round Lake?
What is the UV index reading in May in Round Lake?
Average temperature in May
Round Lake, IL
- Average high temperature in May: 65.3°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in May: 49.6°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in May
Round Lake, IL
- Average pressure in May: 29.96"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Round Lake, IL
- Average wind speed in May: 8.4mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in May
Round Lake, IL
- Average humidity in May: 78%
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
Round Lake, IL
- Average rainfall in May: 2.44"
The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is December (0.98").
Average rainfall days in May
Round Lake, IL
- Average rainfall days in May: 17 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is February (5 days).
Average snowfall in May
Round Lake, IL
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Round Lake, IL
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Round Lake, 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 6min).
- Average sunshine in May: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Round Lake, IL
- Average sunshine days in May: 10.8 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in May
Round Lake, IL
- Average UV index in May: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Round Lake, 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, August and September (Cloud cover 30).
Average visibility in May
Round Lake, IL
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Round Lake, Illinois, USA
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