May weather forecastMound City, IL
May
Weather in May
The last month of the spring, May, is a moderately hot month in Mound City, Illinois, with an average temperature fluctuating between 59.5°F (15.3°C) and 76.6°F (24.8°C).Temperature
Mound City's transition into May is marked by a temperature shift, moving from a refreshing 67.6°F (19.8°C) in April to a warm 76.6°F (24.8°C). Throughout May, Mound City experiences a low-temperature average of 59.5°F (15.3°C).Humidity
February, March, May and December, with an average relative humidity of 78%, are the most humid months.Rainfall
In Mound City, during May, the rain falls for 17.1 days and regularly aggregates up to 3.94" (100mm) of precipitation. In Mound City, during the entire year, the rain falls for 156.3 days and collects up to 36.65" (931mm) of precipitation.Snowfall
In Mound City, snow does not fall in May through September.Daylight
The average length of the day in May is 14h and 10min.On the first day of the month, sunrise is at 6:01 am and sunset at 7:46 pm. On the last day of May, sunrise is at 5:38 am and sunset at 8:10 pm CDT.
Sunshine
The average sunshine in May is 9.3h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 6 during May translates into these guidelines:
Resist overexposure. Safeguarding from solar damage is indispensable. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. 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
Mound City, IL
- Average high temperature in May: 76.6°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.2°F).
- Average low temperature in May: 59.5°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in May
Mound City, IL
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Mound City, IL
- Average wind speed in May: 7.6mph
The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in May
Mound City, IL
- Average humidity in May: 78%
The months with the highest relative humidity are February, March, May and December (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in May
Mound City, IL
- Average rainfall in May: 3.94"
The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in May
Mound City, IL
- Average rainfall days in May: 17.1 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in May
Mound City, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Mound City, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Mound City, IL
- Average daylight in May: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 9h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Mound City, IL
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in May
Mound City, IL
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in May
Mound City, IL
- Average cloud cover in May: 38
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in May
Mound City, 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).
