May weather forecastYorkville, IL
May
Weather in May
The last month of the spring, May, is a pleasant month in Yorkville, Illinois, with an average temperature fluctuating between 69.6°F (20.9°C) and 52.3°F (11.3°C).Temperature
An escalation in the average high-temperature is seen with the onset of May, moving from a refreshing 57.4°F (14.1°C) in April to a pleasant 69.6°F (20.9°C). In May, Yorkville records an average nighttime temperature of 52.3°F (11.3°C).Humidity
In May, the average relative humidity is 77%.Rainfall
May is the month with the most rainfall in Yorkville. Rain falls for 19.4 days and accumulates 4.88" (124mm) of precipitation.Snowfall
In Yorkville, snow does not fall in May through September.Daylight
In Yorkville, the average length of the day in May is 14h and 33min.On the first day of May, sunrise is at 5:49 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:21 pm CDT.
Sunshine
In May, the average sunshine in Yorkville, Illinois, is 8.5h.UV index
In Yorkville, Illinois, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 5 in May translates into these instructions:
Ensure safety - Sun damage prevention is strongly urged. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Yorkville, IL
- Average high temperature in May: 69.6°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in May: 52.3°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in May
Yorkville, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Yorkville, IL
- Average wind speed in May: 8.3mph
The windiest months (with the highest average wind speed) are January and April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Yorkville, IL
- Average humidity in May: 77%
The months with the highest relative humidity are July and August (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Yorkville, IL
- Average rainfall in May: 4.88"
The wettest month (with the highest rainfall) is May (4.88").
The driest month (with the least rainfall) is November (1.73").
Average rainfall days in May
Yorkville, IL
- Average rainfall days in May: 19.4 days
The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is February (6 days).
Average snowfall in May
Yorkville, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Yorkville, IL
- Average snowfall days in May: 0.2 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
Yorkville, IL
- Average daylight in May: 14h and 36min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 30min
The months with the most sunshine are June and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Yorkville, IL
- Average sunshine days in May: 9.3 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in May
Yorkville, IL
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Yorkville, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in May
Yorkville, IL
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
