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 marks a rise in the average high-temperature, moving from April's cool 54.1°F (12.3°C) to a comfortable 66.6°F (19.2°C). In Richmond, in May, the average low-temperature is a frosty 48.7°F (9.3°C).Humidity
In May, the average relative humidity in Richmond is 79%.Rainfall
In May, the rain falls for 17.2 days. Throughout May, 2.44" (62mm) of precipitation is accumulated. In Richmond, during the entire year, the rain falls for 133.6 days and collects up to 20.16" (512mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Richmond. May is the last month it regularly snows. During 0.3 snowfall days, in May, Richmond aggregates 0.08" (2mm) of snow. In Richmond, during the entire year, snow falls for 46.5 days and aggregates up to 12.95" (329mm) of snow.Daylight
The average length of the day in May is 14h and 38min.On the first day of the month, sunrise is at 5:46 am and sunset at 7:53 pm. On the last day of May, in Richmond, sunrise is at 5:18 am and sunset at 8:23 pm CDT.
Sunshine
The average sunshine in May in Richmond, Illinois, is 8.6h.UV index
In Richmond, Illinois, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 5 in May translates into these instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Richmond?
What is the average humidity in May in Richmond?
How much does it rain in Richmond in May?
What is the last month it snows in Richmond?
How many hours of daylight does Richmond have in May?
What time are sunrise and sunset in May in Richmond?
How many hours of sunshine does Richmond have in May?
What is the UV index reading in May in Richmond?
Average temperature in May
Richmond, IL
- Average high temperature in May: 66.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in May: 48.7°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in May
Richmond, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Richmond, IL
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in May
Richmond, IL
- Average humidity in May: 79%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (76%).
Average rainfall in May
Richmond, IL
- Average rainfall in May: 2.44"
The wettest month (with the highest rainfall) is June (2.87").
The driest months (with the least rainfall) are January, February and December (0.83").
Average rainfall days in May
Richmond, IL
- Average rainfall days in May: 17.2 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in May
Richmond, IL
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Richmond, IL
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Richmond, IL
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Richmond, IL
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in May
Richmond, IL
- Average UV index in May: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Richmond, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in May
Richmond, IL
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Richmond, Illinois, USA
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