May weather forecastTrilla, IL
May
Weather in May
The last month of the spring, May, is a pleasant month in Trilla, Illinois, with an average temperature varying between 56.8°F (13.8°C) and 73°F (22.8°C).Temperature
In Trilla, stepping into May brings a temperature increase, moving up from April's refreshing 63°F (17.2°C) to a pleasant 73°F (22.8°C). Trilla registers a consistent average low-temperature of 56.8°F (13.8°C) during May.Humidity
The average relative humidity in May is 79%.Rainfall
In Trilla, in May, during 13.5 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. In Trilla, during the entire year, the rain falls for 111.4 days and collects up to 10.31" (262mm) of precipitation.Snowfall
In Trilla, snow does not fall in April through September.Daylight
In May, the average length of the day is 14h and 22min.On the first day of May in Trilla, sunrise is at 5:53 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 5:28 am and sunset at 8:13 pm CDT.
Sunshine
In Trilla, the average sunshine in May is 9.1h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 5 during May morphs into the following directions:
Take necessary precautions - Suggestions to elude sunburn are provided. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Trilla, IL
- Average high temperature in May: 73°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.5°F).
- Average low temperature in May: 56.8°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in May
Trilla, 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 (29.93"Hg).
Average wind speed in May
Trilla, IL
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in May
Trilla, IL
- Average humidity in May: 79%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Trilla, IL
- Average rainfall in May: 1.18"
The wettest month (with the highest rainfall) is April (1.3").
The driest months (with the least rainfall) are February, September and November (0.51").
Average rainfall days in May
Trilla, IL
- Average rainfall days in May: 13.5 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in May
Trilla, IL
- Average snowfall in May: 0"
The month with the highest snowfall is December (0.87").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in May
Trilla, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (5.3 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
Trilla, 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 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 12min).
Average sunshine days in May
Trilla, IL
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in May
Trilla, IL
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Trilla, IL
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in May
Trilla, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).





