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
May's onset is marked by a temperature increase, moving from a refreshing 64.6°F (18.1°C) in April to a warm 74.5°F (23.6°C). In Walnut Hill, the nighttime temperature averages to a refreshing 57.7°F (14.3°C) during May.Humidity
The months with the highest humidity are May and July, with an average relative humidity of 80%.Rainfall
In Walnut Hill, during May, the rain falls for 10.1 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, in Walnut Hill, there are 83.2 rainfall days, and 6.81" (173mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Walnut Hill.Daylight
In May, the average length of the day in Walnut Hill is 14h and 17min.On the first day of the month, sunrise is at 5:58 am and sunset at 7:48 pm. On the last day of May, sunrise is at 5:33 am and sunset at 8:14 pm CDT.
Sunshine
In May, the average sunshine is 9.1h.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 hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 6 during May morphs into the following directions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Walnut Hill?
What are the most humid months in Walnut Hill?
What is the average humidity in May in Walnut Hill?
How much does it rain in Walnut Hill in May?
When it does not snow in Walnut Hill?
How many hours of daylight does Walnut Hill have in May?
When are sunrise and sunset in May in Walnut Hill?
How long on average sun shines in May in Walnut Hill?
What is the month with the highest UV index in Walnut Hill?
What is the UV index reading in May in Walnut Hill?
Average temperature in May
Walnut Hill, IL
- Average high temperature in May: 74.5°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37.2°F).
- Average low temperature in May: 57.7°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in May
Walnut Hill, 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 (29.93"Hg).
Average wind speed in May
Walnut Hill, IL
- Average wind speed in May: 8mph
The windiest month (with the highest average wind speed) is February (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in May
Walnut Hill, 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 (71%).
Average rainfall in May
Walnut Hill, IL
- Average rainfall in May: 0.71"
The wettest months (with the highest rainfall) are April and July (0.75").
The driest month (with the least rainfall) is September (0.24").
Average rainfall days in May
Walnut Hill, IL
- Average rainfall days in May: 10.1 days
The month with the highest number of rainy days is May (10.1 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in May
Walnut Hill, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Walnut Hill, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Walnut Hill, IL
- Average daylight in May: 14h and 2min
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 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in May
Walnut Hill, IL
- Average sunshine days in May: 16.8 days
The months with the most sunshine days are January and December (24.5 days).
The month with the least sunshine days is May (16.8 days).
Average UV index in May
Walnut Hill, 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, November and December (UV index 2).
Average cloud cover in May
Walnut Hill, IL
- Average cloud cover in May: 39
The months with the most cloud cover are January and February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in May
Walnut Hill, 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).
Walnut Hill, Illinois, USA
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