May weather forecastMacon, IL
May
Weather in May
May, the last month of the spring in Macon, is an agreeable month, with an average temperature fluctuating between 56.7°F (13.7°C) and 72.9°F (22.7°C).Temperature
May's onset brings a rise in the average high-temperature, moving from a comfortable 62.4°F (16.9°C) in April to an agreeable 72.9°F (22.7°C). Macon records an average low-temperature of 56.7°F (13.7°C) throughout the month of May.Humidity
In Macon, Illinois, the average relative humidity in May is 78%.Rainfall
The months with the most rainfall are April and May, with an average 2.91" (74mm) of precipitation.Snowfall
April through October are months without snowfall in Macon, Illinois.Daylight
In May, the average length of the day is 14h and 23min.On the first day of May in Macon, sunrise is at 5:55 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:17 pm CDT.
Sunshine
In May, the average sunshine in Macon is 9.2h.UV index
In Macon, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: An average UV index of 5 in May transforms into this advice:
Exercise prevention - Protecting skin and eyes from harm is required. To guard against the harmful effects of the Sun, minimize exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Macon, IL
- Average high temperature in May: 72.9°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in May: 56.7°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in May
Macon, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Macon, IL
- Average wind speed in May: 8.6mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in May
Macon, IL
- Average humidity in May: 78%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Macon, IL
- Average rainfall in May: 2.91"
The wettest months (with the highest rainfall) are April and May (2.91").
The driest months (with the least rainfall) are February and December (1.38").
Average rainfall days in May
Macon, IL
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in May
Macon, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Macon, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Macon, IL
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 9h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Macon, IL
- Average sunshine days in May: 11.6 days
The month with the most sunshine days is October (19.7 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in May
Macon, 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, February, November and December (UV index 2).
Average cloud cover in May
Macon, IL
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in May
Macon, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).





