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
With the onset of May, Saint Charles experiences a subtle temperature shift, with the average high-temperature moving from a comfortable 65.8°F (18.8°C) in April to a moderately hot 74.3°F (23.5°C). Saint Charles in May experiences a low-temperature average of 53.1°F (11.7°C).Humidity
In May, the average relative humidity in Saint Charles is 78%.Rainfall
In Saint Charles, in May, it is raining for 18.6 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, there are 176.3 rainfall days, and 32.87" (835mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Saint Charles.Daylight
In Saint Charles, the average length of the day in May is 14h and 9min.On the first day of the month, sunrise is at 6:37 am and sunset at 8:21 pm. On the last day of May, in Saint Charles, sunrise is at 6:14 am and sunset at 8:45 pm EDT.
Sunshine
The average sunshine in May is 9.4h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 6 during May, leads to the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Consider this! The reflection from snow 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 usual temperature for Saint Charles in May?
What is the average humidity in May in Saint Charles?
How much does it rain in Saint Charles in May?
When it does not snow in Saint Charles?
Does it snow in Saint Charles in May?
What is the average length of the day in May in Saint Charles?
What time are sunrise and sunset in May in Saint Charles?
How long on average sun shines in May in Saint Charles?
What is the month with the highest UV index in Saint Charles?
How high is the UV index in May in Saint Charles?
Average temperature in May
Saint Charles, VA
- Average high temperature in May: 74.3°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in May: 53.1°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 (26.8°F).
Average pressure in May
Saint Charles, VA
- Average pressure in May: 30.02"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in May
Saint Charles, VA
- Average wind speed in May: 5.2mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in May
Saint Charles, VA
- Average humidity in May: 78%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are August and November (76%).
Average rainfall in May
Saint Charles, VA
- Average rainfall in May: 2.83"
The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in May
Saint Charles, VA
- Average rainfall days in May: 18.6 days
The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in May
Saint Charles, VA
- Average snowfall in May: 0"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Saint Charles, VA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Saint Charles, VA
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in May
Saint Charles, VA
- Average sunshine days in May: 10 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is May (10 days).
Average UV index in May
Saint Charles, VA
- 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, November and December (UV index 2).
Average cloud cover in May
Saint Charles, VA
- Average cloud cover in May: 40
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Saint Charles, VA
- Average visibility in May: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Saint Charles, Virginia, USA
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