May weather forecastSpring Bay, IL
May
Weather in May
The last month of the spring, May, is an agreeable month in Spring Bay, Illinois, with an average temperature varying between 71.2°F (21.8°C) and 54.1°F (12.3°C).Temperature
With the arrival of May, the average high-temperature transitions from a moderate 60.1°F (15.6°C) in April to an agreeable 71.2°F (21.8°C). May nights in Spring Bay, Illinois, experience a consistent temperature drop to a fresh 54.1°F (12.3°C).Humidity
The average relative humidity in May in Spring Bay is 78%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.2 days and typically aggregates up to 2.36" (60mm) of precipitation.Snowfall
May through September are months without snowfall in Spring Bay.Daylight
In Spring Bay, the average length of the day in May is 14h and 29min.On the first day of the month, sunrise is at 5:55 am and sunset at 7:54 pm. On the last day of May, in Spring Bay, sunrise is at 5:28 am and sunset at 8:23 pm CDT.
Sunshine
The average sunshine in May is 8.9h.UV index
The average daily maximum UV index in May in Spring Bay, Illinois, is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 5 in May translates into the following recommendations:
Act with care - The need to guard against sun damage is communicated. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Spring Bay, IL
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in May: 54.1°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in May
Spring Bay, IL
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Spring Bay, IL
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in May
Spring Bay, IL
- Average humidity in May: 78%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Spring Bay, IL
- Average rainfall in May: 2.36"
The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in May
Spring Bay, IL
- Average rainfall days in May: 16.2 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in May
Spring Bay, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Spring Bay, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (9.2 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
Spring Bay, IL
- Average daylight in May: 14h and 30min
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 18min).
- Average sunshine in May: 8h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Spring Bay, IL
- Average sunshine days in May: 12.4 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (12.4 days).
Average UV index in May
Spring Bay, 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
Spring Bay, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in May
Spring Bay, 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).





