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
May shows a rise in the average high-temperature, moving from April's mild 56.5°F (13.6°C) to an agreeable 68.7°F (20.4°C). Throughout the month of May, Lombard expects an average low of 52.2°F (11.2°C).Humidity
In May, the average relative humidity is 75%.Rainfall
May is the month with the most rainfall in Lombard. Rain falls for 16.7 days and accumulates 3.07" (78mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Lombard. During 0.1 snowfall days, in May, Lombard aggregates 0.04" (1mm) of snow. Throughout the year, there are 46.3 snowfall days, and 14.25" (362mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 34min.On the first day of the month, sunrise is at 5:47 am and sunset at 7:51 pm. On the last day of May, sunrise is at 5:19 am and sunset at 8:20 pm CDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 5 during May translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Lombard in May?
What is the average humidity in May?
What is the wettest month?
How much does it rain in May?
What is the last month it snows?
How many hours of daylight does Lombard have in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Lombard, IL
- Average high temperature in May: 68.7°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in May: 52.2°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in May
Lombard, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Lombard, IL
- Average wind speed in May: 8.1mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in May
Lombard, IL
- Average humidity in May: 75%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Lombard, IL
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is December (1.14").
Average rainfall days in May
Lombard, IL
- Average rainfall days in May: 16.7 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in May
Lombard, IL
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Lombard, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Lombard, 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 3min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Lombard, IL
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in May
Lombard, 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 and December (UV index 1).
Average cloud cover in May
Lombard, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in May
Lombard, IL
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Lombard, Illinois, USA
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