May weather forecastAntioch, IL
May
Weather in May
May carries the typical virtues of a late spring month in Antioch. The town basks in warmer temperatures, with an average high of 65.1°F (18.4°C), paving the way for delightful weather in the daytime. Mother Nature appears in full splendor as the rainfall nurtures blossoming flowers and flourishing greenery. 14.6 hours of daylight highlight the lengthening days, a direct contrast to the shortened durations witnessed during winter months. The warmth and vibrancy of May's weather conditions make this month one of the most inviting times of the year.Temperature
As Antioch, Illinois, transitions into May, the average high-temperature shows a change, moving from a cool 53.2°F (11.8°C) in April to a refreshing 65.1°F (18.4°C). Throughout the May nights, Antioch encounters a low-temperature of 48.7°F (9.3°C).Humidity
The average relative humidity in May is 80%.Rainfall
In Antioch, during May, the rain falls for 17.1 days and regularly aggregates up to 3.03" (77mm) of precipitation. In Antioch, Illinois, during the entire year, the rain falls for 139.6 days and collects up to 26.18" (665mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Antioch aggregates 0.08" (2mm) of snow. In Antioch, during the entire year, snow falls for 38.2 days and aggregates up to 15.59" (396mm) of snow.Daylight
In Antioch, the average length of the day in May is 14h and 38min.On the first day of May, sunrise is at 5:46 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:22 pm CDT.
Sunshine
In May, the average sunshine in Antioch, Illinois, is 8.3h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In May, the maximum UV index of 5 suggests these recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Antioch, IL
- Average high temperature in May: 65.1°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in May: 48.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in May
Antioch, IL
- Average pressure in May: 29.96"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Antioch, IL
- Average wind speed in May: 8.5mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in May
Antioch, IL
- Average humidity in May: 80%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall in May
Antioch, IL
- Average rainfall in May: 3.03"
The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is December (1.06").
Average rainfall days in May
Antioch, IL
- Average rainfall days in May: 17.1 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in May
Antioch, IL
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (4.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Antioch, IL
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Antioch, 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 18min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 36min).
Average sunshine days in May
Antioch, IL
- Average sunshine days in May: 11.1 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in May
Antioch, IL
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Antioch, IL
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July, August and September (Cloud cover 32).
Average visibility in May
Antioch, 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).





