May weather forecastWaukegan, IL
May
Weather in May
May experiences a transition towards consistent summer-like weather in Waukegan, Illinois. The increasing daylight hours make for characteristic long, sunny days. The increasingly warm weather reinvigorates the lush greenery for which the city is known. There's a shift towards a more humid climate in contrast to the pleasant conditions of May when June arrives.Temperature
The arrival of May in Waukegan brings an increase in high-temperatures, moving from a cool 50.7°F (10.4°C) in April to a comfortable 61.3°F (16.3°C). May nights in Waukegan cool down to an average low-temperature of 48.6°F (9.2°C).Humidity
In Waukegan, the average relative humidity in May is 80%.Rainfall
In Waukegan, during May, the rain falls for 16 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, there are 142.5 rainfall days, and 21.5" (546mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Waukegan.Daylight
In Waukegan, the average length of the day in May is 14h and 37min.On the first day of May, sunrise is at 5:45 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:21 pm CDT.
Sunshine
In May, the average sunshine is 8.7h.UV index
The average daily maximum UV index in May in Waukegan is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, the maximum UV index of 4 transforms into these recommendations:
Act with care - The need to guard against sun damage is communicated. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Waukegan, IL
- Average high temperature in May: 61.3°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 48.6°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in May
Waukegan, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Waukegan, IL
- Average wind speed in May: 9.2mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in May
Waukegan, IL
- Average humidity in May: 80%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in May
Waukegan, IL
- Average rainfall in May: 2.48"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in May
Waukegan, IL
- Average rainfall days in May: 16 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in May
Waukegan, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Waukegan, 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
Waukegan, 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 6min).
- Average sunshine in May: 8h and 42min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Waukegan, IL
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in May
Waukegan, IL
- Average UV index in May: 4
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
Waukegan, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Waukegan, 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).
