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
As May begins, there is an increase in the average high-temperature, moving from a comfortable 66.6°F (19.2°C) in April to a moderately hot 75.7°F (24.3°C). Ullin's average low-temperature is measured at a refreshing 58.1°F (14.5°C) during May.Humidity
May is the most humid month, with an average relative humidity of 79%.Rainfall
In Ullin, in May, during 14.9 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. Throughout the year, in Ullin, there are 143 rainfall days, and 27.44" (697mm) of precipitation is accumulated.Snowfall
In Ullin, snow does not fall in May through September.Daylight
The average length of the day in May is 14h and 11min.On the first day of May in Ullin, sunrise is at 6:00 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:11 pm CDT.
Sunshine
The average sunshine in May is 9.1h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Ullin in May?
What is the most humid month in Ullin?
What is the average humidity in May in Ullin?
How many days does it rain in May in Ullin?
When it does not snow in Ullin?
Does it snow in Ullin in May?
What is the average length of the day in May in Ullin?
When are sunrise and sunset in May in Ullin?
How long on average sun shines in May in Ullin?
What is the month with the highest UV index in Ullin?
What is the UV index intensity in May in Ullin?
Average temperature in May
Ullin, IL
- Average high temperature in May: 75.7°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in May: 58.1°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in May
Ullin, IL
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Ullin, IL
- Average wind speed in May: 7.3mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in May
Ullin, IL
- Average humidity in May: 79%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Ullin, IL
- Average rainfall in May: 2.95"
The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in May
Ullin, IL
- Average rainfall days in May: 14.9 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in May
Ullin, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Ullin, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.6 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
Ullin, IL
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in May
Ullin, IL
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in May
Ullin, IL
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in May
Ullin, IL
- Average cloud cover in May: 40
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility in May
Ullin, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Ullin, Illinois, USA
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