May weather forecastLouisville, IL
May
Weather in May
May, the last month of the spring in Louisville, is a moderately hot month, with temperature in the range of an average high of 73.9°F (23.3°C) and an average low of 57.9°F (14.4°C).Temperature
May's arrival coincides with a rise in the average high-temperature, moving from April's refreshing 64.4°F (18°C) to a moderately hot 73.9°F (23.3°C). During May, Louisville witnesses a consistent average low-temperature of 57.9°F (14.4°C).Humidity
The months with the highest humidity in Louisville, Illinois, are May and July, with an average relative humidity of 80%.Rainfall
In May, in Louisville, the rain falls for 19.9 days. Throughout May, 4.21" (107mm) of precipitation is accumulated. Throughout the year, in Louisville, there are 167.3 rainfall days, and 37.17" (944mm) of precipitation is accumulated.Snowfall
In Louisville, snow does not fall in May through September.Daylight
In May, the average length of the day in Louisville is 14h and 19min.On the first day of May in Louisville, Illinois, sunrise is at 5:55 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:12 pm CDT.
Sunshine
In May, the average sunshine in Louisville is 9.1h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 6 during May leads to these instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. 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. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Louisville, IL
- Average high temperature in May: 73.9°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in May: 57.9°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in May
Louisville, 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 (29.93"Hg).
Average wind speed in May
Louisville, IL
- Average wind speed in May: 8.3mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in May
Louisville, IL
- Average humidity in May: 80%
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Louisville, IL
- Average rainfall in May: 4.21"
The wettest month (with the highest rainfall) is April (4.88").
The driest months (with the least rainfall) are February and September (2.09").
Average rainfall days in May
Louisville, IL
- Average rainfall days in May: 19.9 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in May
Louisville, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Louisville, 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
Louisville, IL
- Average daylight in May: 14h and 18min
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 30min).
- Average sunshine in May: 9h and 6min
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 24min).
Average sunshine days in May
Louisville, IL
- Average sunshine days in May: 9 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (9 days).
Average UV index in May
Louisville, 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, November and December (UV index 2).
Average cloud cover in May
Louisville, IL
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in May
Louisville, 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).
