May weather forecastBloomington, IL
May
Weather in May
May in Bloomington signifies the full bloom of spring, with mild temperatures and ample sunshine. The month is characterized by increasingly comfortable day temperatures, reinforcing the spring vibrancy. Increased rainfall nurtures the local flora, painting the city with various hues of greens. Towards the month's end, there is a decline in the frequency of rainy days. As the city basks in the lively spring weather, May also bids farewell to the season and prepares for the approaching summer weather.Temperature
The shift into May is accompanied by a temperature increase, with the average high-temperature rising from a refreshing 60.4°F (15.8°C) in April to an agreeable 72°F (22.2°C). An average low-temperature of 55.4°F (13°C) marks the nights throughout May.Humidity
The average relative humidity in May is 77%.Rainfall
May is the month with the most rainfall. Rain falls for 17.5 days and accumulates 2.99" (76mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Bloomington, the average length of the day in May is 14h and 27min.On the first day of May, sunrise is at 5:53 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:19 pm CDT.
Sunshine
In Bloomington, the average sunshine in May is 8.6h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In May, the UV index of 5 transforms into the following advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Bloomington, IL
- Average high temperature in May: 72°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in May: 55.4°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in May
Bloomington, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Bloomington, IL
- Average wind speed in May: 9.3mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in May
Bloomington, IL
- Average humidity in May: 77%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Bloomington, IL
- Average rainfall in May: 2.99"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in May
Bloomington, IL
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in May
Bloomington, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Bloomington, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (11.5 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
Bloomington, IL
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 36min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Bloomington, IL
- Average sunshine days in May: 11.1 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in May
Bloomington, 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
Bloomington, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in May
Bloomington, 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).





