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's arrival coincides with a temperature rise, moving from April's cool 54.7°F (12.6°C) to a refreshing 66.4°F (19.1°C). In May, Arlington Heights experiences an average nighttime temperature of 50.5°F (10.3°C).Humidity
The average relative humidity in May is 76%.Rainfall
The months with the most rainfall in Arlington Heights are April and May, with an average 3.46" (88mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Arlington Heights aggregates 0.08" (2mm) of snow. Throughout the year, there are 48.8 snowfall days, and 21.02" (534mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 35min.On the first day of the month, sunrise is at 5:46 am and sunset at 7:51 pm. On the last day of May, sunrise is at 5:18 am and sunset at 8:20 pm CDT.
Sunshine
In Arlington Heights, the average sunshine in May is 8.4h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In May, the UV index of 5 transforms into the following advice:
Be vigilant - Preventing sunburn is recommended. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Arlington Heights?
What is the average humidity in May in Arlington Heights?
What is the wettest month in Arlington Heights?
How many days does it rain in May in Arlington Heights?
What is the last month it snows in Arlington Heights?
What is the average length of the day in May in Arlington Heights?
When are sunrise and sunset in May in Arlington Heights?
How many hours of sunshine does Arlington Heights have in May?
What is the UV index intensity in May in Arlington Heights?
Average temperature in May
Arlington Heights, IL
- Average high temperature in May: 66.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 50.5°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in May
Arlington Heights, 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
Arlington Heights, IL
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in May
Arlington Heights, IL
- Average humidity in May: 76%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Arlington Heights, IL
- Average rainfall in May: 3.46"
The wettest months (with the highest rainfall) are April and May (3.46").
The driest month (with the least rainfall) is November (1.57").
Average rainfall days in May
Arlington Heights, IL
- Average rainfall days in May: 16.4 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in May
Arlington Heights, IL
- Average snowfall in May: 0.08"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Arlington Heights, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Arlington Heights, 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 months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Arlington Heights, IL
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in May
Arlington Heights, IL
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Arlington Heights, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in May
Arlington Heights, 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).
Arlington Heights, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location