May weather forecastColumbia, IL
May
Weather in May
May, the last month of the spring in Columbia, is a warm month, with an average temperature ranging between max 75°F (23.9°C) and min 57.7°F (14.3°C).Temperature
May sees a rise in the average high-temperature, climbing from a refreshing 65.5°F (18.6°C) in April to a moderately hot 75°F (23.9°C). Columbia encounters an average low-temperature of 57.7°F (14.3°C) during May nights.Humidity
The most humid month in Columbia, Illinois, is May, with an average relative humidity of 79%.Rainfall
The month with the most rainfall in Columbia is May, when the rain falls for 15.3 days and typically aggregates up to 3.58" (91mm) of precipitation.Snowfall
In Columbia, snow does not fall in April through October.Daylight
In May, the average length of the day in Columbia is 14h and 17min.On the first day of May in Columbia, sunrise is at 6:02 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:18 pm CDT.
Sunshine
In May, the average sunshine in Columbia is 9.5h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Columbia, Illinois. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 6 during May, leads to the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Columbia, IL
- Average high temperature in May: 75°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in May: 57.7°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in May
Columbia, 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 (29.92"Hg).
Average wind speed in May
Columbia, IL
- Average wind speed in May: 7.2mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in May
Columbia, 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
Columbia, IL
- Average rainfall in May: 3.58"
The wettest month (with the highest rainfall) is May (3.58").
The driest months (with the least rainfall) are February and November (1.57").
Average rainfall days in May
Columbia, IL
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in May
Columbia, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Columbia, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (6.2 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
Columbia, 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 30min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in May
Columbia, IL
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in May
Columbia, 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
Columbia, IL
- Average cloud cover in May: 37
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in May
Columbia, 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).
