May weather forecastCave-In-Rock, IL
May
Weather in May
The last month of the spring, May, is a warm month in Cave-In-Rock, Illinois, with an average temperature ranging between max 75.6°F (24.2°C) and min 58.5°F (14.7°C).Temperature
The transition from April to May brings a subtle temperature rise, with average high-temperatures increasing from a comfortable 66.7°F (19.3°C) to a moderately hot 75.6°F (24.2°C). Cave-In-Rock's average low-temperature during May nights is observed to be a refreshing 58.5°F (14.7°C).Humidity
The most humid month is May, with an average relative humidity of 80%.Rainfall
In Cave-In-Rock, in May, during 16.3 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Cave-In-Rock, during the entire year, the rain falls for 148.8 days and collects up to 27.05" (687mm) of precipitation.Snowfall
In Cave-In-Rock, snow does not fall in May through October.Daylight
In Cave-In-Rock, the average length of the day in May is 14h and 12min.On the first day of the month, sunrise is at 5:56 am and sunset at 7:42 pm. On the last day of May, sunrise is at 5:33 am and sunset at 8:07 pm CDT.
Sunshine
The average sunshine in May is 9.3h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 6 during May leads to these advisories:
Shield from overexposure. Defense against sun-related harm is required. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Cave-In-Rock, IL
- Average high temperature in May: 75.6°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in May: 58.5°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 (27.5°F).
Average pressure in May
Cave-In-Rock, IL
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Cave-In-Rock, IL
- Average wind speed in May: 7.7mph
The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in May
Cave-In-Rock, IL
- Average humidity in May: 80%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Cave-In-Rock, IL
- Average rainfall in May: 2.56"
The wettest month (with the highest rainfall) is February (3.03").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in May
Cave-In-Rock, IL
- Average rainfall days in May: 16.3 days
The months with the highest number of rainy days are May and July (16.3 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in May
Cave-In-Rock, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Cave-In-Rock, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.5 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
Cave-In-Rock, 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 36min).
- Average sunshine in May: 9h and 18min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in May
Cave-In-Rock, IL
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (12.1 days).
Average UV index in May
Cave-In-Rock, 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
Cave-In-Rock, IL
- Average cloud cover in May: 38
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June, August and September (Cloud cover 28).
Average visibility in May
Cave-In-Rock, 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).
