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 shift into May is marked by a rise in the average high-temperature, moving from April's moderate 56.5°F (13.6°C) to a pleasant 68.7°F (20.4°C). Throughout May, Leaf River anticipates an average low-temperature of 51.4°F (10.8°C).Humidity
The average relative humidity in May is 78%.Rainfall
May is the month with the most rainfall. Rain falls for 19.1 days and accumulates 4.53" (115mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Leaf River. May is the last month it regularly snows in Leaf River. During 0.1 snowfall days, in May, Leaf River aggregates 0.04" (1mm) of snow. Throughout the year, in Leaf River, there are 45.5 snowfall days, and 19.25" (489mm) of snow is accumulated.Daylight
In May, the average length of the day in Leaf River is 14h and 36min.On the first day of May, sunrise is at 5:52 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 8:26 pm CDT.
Sunshine
In Leaf River, the average sunshine in May is 8.3h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index in Leaf River, Illinois. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 5 in May suggests the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. When the Sun is at its strongest around midday, find shade and limit exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What are the temperatures in Leaf River in May?
What is the average humidity in May in Leaf River?
What is the rainiest month in Leaf River?
How much does it rain in Leaf River in May?
What is the last month it snows in Leaf River?
What is the average length of the day in May in Leaf River?
When is the sunrise / sunset in May in Leaf River?
How long on average sun shines in May in Leaf River?
When is the highest UV index in Leaf River?
What is the UV index reading in May in Leaf River?
Average temperature in May
Leaf River, IL
- Average high temperature in May: 68.7°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 (26.1°F).
- Average low temperature in May: 51.4°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 (13.8°F).
Average pressure in May
Leaf River, 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 (29.91"Hg).
Average wind speed in May
Leaf River, IL
- Average wind speed in May: 8.8mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in May
Leaf River, IL
- Average humidity in May: 78%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall in May
Leaf River, IL
- Average rainfall in May: 4.53"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is February (1.57").
Average rainfall days in May
Leaf River, IL
- Average rainfall days in May: 19.1 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in May
Leaf River, IL
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (5.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Leaf River, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Leaf River, 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 12min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Leaf River, IL
- Average sunshine days in May: 10.3 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in May
Leaf River, IL
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Leaf River, IL
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in May
Leaf River, IL
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Leaf River, Illinois, USA
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