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
The onset of May brings a temperature shift, with the average high-temperature moving from an enjoyable 65.5°F (18.6°C) in April to a warm 74.5°F (23.6°C). Throughout May, an average low-temperature of 56.7°F (13.7°C) is expected in Saint Charles.Humidity
With an average relative humidity of 78%, May is the most humid month.Rainfall
In May, in Saint Charles, the rain falls for 16.8 days. Throughout May, 2.72" (69mm) of precipitation is accumulated. Throughout the year, there are 151.4 rainfall days, and 29.33" (745mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Saint Charles, Maryland.Daylight
The average length of the day in May is 14h and 17min.On the first day of the month, sunrise is at 6:09 am and sunset at 8:00 pm. On the last day of May, in Saint Charles, sunrise is at 5:45 am and sunset at 8:25 pm EDT.
Sunshine
In May, the average sunshine in Saint Charles is 8.8h.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 threat to health from exposure to the Sun's UV radiation for the average person.Note: In May, the maximum UV index of 6 translates into these guidelines:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What are the temperatures in Saint Charles in May?
What is the most humid month in Saint Charles?
What is the average humidity in May in Saint Charles?
How many days does it rain in May in Saint Charles?
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?
When is the highest UV index in Saint Charles?
What is the UV index reading in May in Saint Charles?
Average temperature in May
Saint Charles, MD
- Average high temperature in May: 74.5°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in May: 56.7°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in May
Saint Charles, MD
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Saint Charles, MD
- Average wind speed in May: 6.5mph
The windiest months (with the highest average wind speed) are March and April (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in May
Saint Charles, MD
- Average humidity in May: 78%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March and April (73%).
Average rainfall in May
Saint Charles, MD
- Average rainfall in May: 2.72"
The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in May
Saint Charles, MD
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in May
Saint Charles, MD
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Saint Charles, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.3 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
Saint Charles, MD
- 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: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).
Average sunshine days in May
Saint Charles, MD
- Average sunshine days in May: 11.4 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11.4 days).
Average UV index in May
Saint Charles, MD
- 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
Saint Charles, MD
- Average cloud cover in May: 45
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Saint Charles, MD
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Saint Charles, Maryland, USA
Weather forecast for your location
2. Allow the app to use your location
