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 arrival of May sees a shift in the average high-temperature, moving from a fresh 54.3°F (12.4°C) in April to a comfortable 66.4°F (19.1°C). Throughout the month of May, the nighttime temperature in Wonder Lake, Illinois, dips to an average of 49.3°F (9.6°C).Humidity
In May, the average relative humidity is 79%.Rainfall
In Wonder Lake, Illinois, in May, during 17.8 rainfall days, 3.39" (86mm) of precipitation is typically accumulated. In Wonder Lake, during the entire year, the rain falls for 152.4 days and collects up to 28.07" (713mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Wonder Lake aggregates 0.08" (2mm) of snow. In Wonder Lake, during the entire year, snow falls for 49 days and aggregates up to 16.5" (419mm) of snow.Daylight
The average length of the day in May is 14h and 37min.On the first day of May, sunrise is at 5:47 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:23 pm CDT.
Sunshine
The average sunshine in May is 8.5h.UV index
In May, the average daily maximum UV index in Wonder Lake is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 5 in May transforms into this advice:
Ensure safety - Recommendations to avert sunburn are presented. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Wonder Lake have in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Wonder Lake have in May?
What is the UV index reading in May?
Average temperature in May
Wonder Lake, IL
- Average high temperature in May: 66.4°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 (26.6°F).
- Average low temperature in May: 49.3°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in May
Wonder Lake, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Wonder Lake, IL
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in May
Wonder Lake, IL
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall in May
Wonder Lake, IL
- Average rainfall in May: 3.39"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.34").
Average rainfall days in May
Wonder Lake, IL
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in May
Wonder Lake, IL
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Wonder Lake, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Wonder 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 months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Wonder Lake, IL
- Average sunshine days in May: 11 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in May
Wonder Lake, IL
- Average UV index in May: 5
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Wonder Lake, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in May
Wonder Lake, 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).
Wonder Lake, Illinois, USA
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