Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Undercliff's transition into May sees a rise in the average high-temperature, advancing from a mild 59.4°F (15.2°C) in April to an agreeable 71.1°F (21.7°C). Undercliff's average low-temperature in the month of May is recorded at a fresh 54°F (12.2°C).Humidity
In May, the average relative humidity in Undercliff is 77%.Rainfall
May is the month with the most rainfall in Undercliff. Rain falls for 18.4 days and accumulates 4.41" (112mm) of precipitation.Snowfall
In Undercliff, snow does not fall in May through September.Daylight
In Undercliff, Illinois, the average length of the day in May is 14h and 31min.On the first day of the month, sunrise is at 5:53 am and sunset at 7:55 pm. On the last day of May, in Undercliff, sunrise is at 5:27 am and sunset at 8:23 pm CDT.
Sunshine
In May, the average sunshine in Undercliff, Illinois, is 8.8h.UV index
The average daily maximum UV index in May in Undercliff, Illinois, is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Prioritize safety - Recommendations to avert sunburn are shared. Minimize direct exposure to the Sun during midday when its radiation is at its peak. 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
What is the usual temperature for Undercliff in May?
What is the average humidity in May in Undercliff?
What is the rainiest month in Undercliff?
How much does it rain in Undercliff in May?
When it does not snow in Undercliff?
Does it snow in Undercliff in May?
What is the average length of the day in May in Undercliff?
When is the sunrise / sunset in May in Undercliff?
How many hours of sunshine does Undercliff have in May?
What is the UV index reading in May in Undercliff?
Average temperature in May
Undercliff, IL
- Average high temperature in May: 71.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in May: 54°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in May
Undercliff, IL
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Undercliff, IL
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in May
Undercliff, IL
- Average humidity in May: 77%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Undercliff, IL
- Average rainfall in May: 4.41"
The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are January and December (1.57").
Average rainfall days in May
Undercliff, IL
- Average rainfall days in May: 18.4 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in May
Undercliff, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Undercliff, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (11.2 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
Undercliff, IL
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in May
Undercliff, IL
- Average sunshine days in May: 10.7 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in May
Undercliff, IL
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Undercliff, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in May
Undercliff, IL
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Undercliff, Illinois, USA
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