May weather forecastElgin, IL
May
Weather in May
May in Elgin documents a significant shift in weather conditions. The arrival of spring's peak marks a farewell to the cold and mellow welcoming of the warmth. Rainfall persists albeit with reduced frequency, maintaining a stable supply of water for flora and fauna. Furthermore, longer daylight hours and reasonable visibility offer ideal conditions for outdoor exploration and activities. The impact of these changes is felt widely as people venture outdoors enjoying the blooming of flowers, clear skies and the occasional soft puddle underfoot from the spring showers.Temperature
An increase in the average high-temperature marks May, moving from April's 55.4°F (13°C) to a still refreshing 67.6°F (19.8°C). May witnesses an average nighttime temperature of 50.5°F (10.3°C).Humidity
In May, the average relative humidity in Elgin is 78%.Rainfall
In May, the rain falls for 17.4 days. Throughout May, 2.95" (75mm) of precipitation is accumulated. In Elgin, during the entire year, the rain falls for 149.2 days and collects up to 24.02" (610mm) of precipitation.Snowfall
Months with snowfall in Elgin are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Elgin aggregates 0.04" (1mm) of snow. In Elgin, during the entire year, snow falls for 47.4 days and aggregates up to 13.07" (332mm) of snow.Daylight
In May, the average length of the day in Elgin is 14h and 35min.On the first day of the month, sunrise is at 5:47 am and sunset at 7:52 pm. On the last day of May, sunrise is at 5:19 am and sunset at 8:21 pm CDT.
Sunshine
In May, the average sunshine is 8.3h.UV index
In Elgin, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 5 during May translates into the following directions:
Act with care - The need to guard against sun damage is communicated. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Elgin, IL
- Average high temperature in May: 67.6°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in May: 50.5°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in May
Elgin, 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
Elgin, IL
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in May
Elgin, IL
- Average humidity in May: 78%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in May
Elgin, IL
- Average rainfall in May: 2.95"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days in May
Elgin, IL
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in May
Elgin, IL
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Elgin, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Elgin, IL
- Average daylight in May: 14h and 36min
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 18min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Elgin, IL
- Average sunshine days in May: 10.5 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in May
Elgin, IL
- Average UV index in May: 5
The months with the highest UV index are 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
Elgin, IL
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in May
Elgin, IL
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).





