May weather forecastPlano, IL
May
Weather in May
May, the last month of the spring in Plano, is an agreeable month, with temperature in the range of an average high of 69.6°F (20.9°C) and an average low of 52.3°F (11.3°C).Temperature
In Plano, stepping into May brings a temperature increase, moving up from April's moderate 57.4°F (14.1°C) to an agreeable 69.6°F (20.9°C). In the month of May, Plano experiences an average low-temperature of 52.3°F (11.3°C).Humidity
In May, the average relative humidity in Plano is 77%.Rainfall
The month with the most rainfall in Plano is May, when the rain falls for 19.4 days and typically aggregates up to 4.88" (124mm) of precipitation.Snowfall
In Plano, Illinois, snow does not fall in May through September.Daylight
The average length of the day in May in Plano is 14h and 33min.On the first day of the month, sunrise is at 5:49 am and sunset at 7:52 pm. On the last day of May, in Plano, Illinois, sunrise is at 5:22 am and sunset at 8:21 pm CDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
In Plano, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. To protect against the Sun's most potent rays, avoid direct exposure around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Plano, 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
Plano, 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
Plano, 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
Plano, 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
Plano, 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
Plano, 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
Plano, 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
Plano, 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
Plano, IL
- Average daylight in May: 14h and 36min
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 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
Plano, 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
Plano, 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
Plano, 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
Plano, 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).
