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 beginning of May signals a rise in the average high-temperature, moving from a refreshing 63.1°F (17.3°C) in April to a pleasant 72.9°F (22.7°C). An average nighttime temperature of 56.8°F (13.8°C) is observed during May.Humidity
In Stonington, the average relative humidity in May is 78%.Rainfall
In Stonington, in May, it is raining for 17.3 days, with typically 3.43" (87mm) of accumulated precipitation. Throughout the year, there are 147.7 rainfall days, and 29.65" (753mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Stonington.Daylight
The average length of the day in May in Stonington is 14h and 23min.On the first day of May, sunrise is at 5:56 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:18 pm CDT.
Sunshine
The average sunshine in May is 9.2h.UV index
In Stonington, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 5 during May translates into the following directions:
Undertake protective steps - Preventing sun damage is advised. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Stonington in May?
What is the average humidity in May in Stonington?
How many days does it rain in May in Stonington?
When it does not snow in Stonington?
Does it snow in Stonington in May?
How many hours of daylight does Stonington have in May?
When is the sunrise / sunset in May in Stonington?
How long on average sun shines in May in Stonington?
How high is the UV index in May in Stonington?
Average temperature in May
Stonington, IL
- Average high temperature in May: 72.9°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in May: 56.8°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in May
Stonington, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Stonington, IL
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in May
Stonington, IL
- Average humidity in May: 78%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Stonington, IL
- Average rainfall in May: 3.43"
The wettest month (with the highest rainfall) is April (3.58").
The driest months (with the least rainfall) are February and December (1.65").
Average rainfall days in May
Stonington, IL
- Average rainfall days in May: 17.3 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in May
Stonington, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Stonington, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Stonington, IL
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in May
Stonington, IL
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (11 days).
Average UV index in May
Stonington, IL
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Stonington, IL
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are June, August and September (Cloud cover 30).
Average visibility in May
Stonington, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Stonington, Illinois, USA
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