May weather forecastWillisville, IL
May
Weather in May
The last month of the spring, May, is a moderately hot month in Willisville, Illinois, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 75.7°F (24.3°C).Temperature
The arrival of May sees a shift in the average high-temperature, moving from a refreshing 66°F (18.9°C) in April to a warm 75.7°F (24.3°C). May brings Willisville a consistent average low-temperature of 57.9°F (14.4°C).Humidity
The most humid month is May, with an average relative humidity of 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 18.3 days and typically aggregates up to 4.49" (114mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in May is 14h and 14min.On the first day of the month, sunrise is at 6:01 am and sunset at 7:49 pm. On the last day of May, sunrise is at 5:37 am and sunset at 8:14 pm CDT.
Sunshine
In May, the average sunshine is 9.2h.UV index
The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Willisville, IL
- Average high temperature in May: 75.7°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in May: 57.9°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in May
Willisville, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Willisville, IL
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in May
Willisville, IL
- Average humidity in May: 79%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Willisville, IL
- Average rainfall in May: 4.49"
The wettest month (with the highest rainfall) is May (4.49").
The driest months (with the least rainfall) are February and September (2.13").
Average rainfall days in May
Willisville, IL
- Average rainfall days in May: 18.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in May
Willisville, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Willisville, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (7.1 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
Willisville, IL
- Average daylight in May: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 9h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in May
Willisville, IL
- Average sunshine days in May: 10.4 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in May
Willisville, 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 and December (UV index 2).
Average cloud cover in May
Willisville, IL
- Average cloud cover in May: 38
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in May
Willisville, 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).
