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
An increase in the average high-temperature marks May, moving from April's refreshing 64.9°F (18.3°C) to a moderately hot 74.3°F (23.5°C). During the month of May, an average temperature of 55.6°F (13.1°C) is noted during the nights in Potomac.Humidity
In Potomac, the average relative humidity in May is 75%.Rainfall
In Potomac, in May, during 17.1 rainfall days, 3.19" (81mm) of precipitation is typically accumulated. Throughout the year, in Potomac, there are 156.5 rainfall days, and 30.71" (780mm) of precipitation is accumulated.Snowfall
In Potomac, Maryland, snow does not fall in May through October.Daylight
In May, the average length of the day is 14h and 19min.On the first day of May in Potomac, sunrise is at 6:09 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:28 pm EDT.
Sunshine
In Potomac, Maryland, the average sunshine in May is 8.8h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Potomac. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The daily maximum UV index of 6 in May interprets into the following advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What is the usual temperature for Potomac in May?
What is the average humidity in May in Potomac?
How many days does it rain in May in Potomac?
When it does not snow in Potomac?
Does it snow in Potomac in May?
How many hours of daylight does Potomac have in May?
When are sunrise and sunset in May in Potomac?
How long on average sun shines in May in Potomac?
When is the highest UV index in Potomac?
How high is the UV index in May in Potomac?
Average temperature in May
Potomac, MD
- Average high temperature in May: 74.3°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 (39.4°F).
- Average low temperature in May: 55.6°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in May
Potomac, 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
Potomac, MD
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in May
Potomac, MD
- Average humidity in May: 75%
The months with the highest relative humidity are October and December (76%).
The month with the lowest relative humidity is July (69%).
Average rainfall in May
Potomac, MD
- Average rainfall in May: 3.19"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is February (1.93").
Average rainfall days in May
Potomac, MD
- Average rainfall days in May: 17.1 days
The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in May
Potomac, MD
- Average snowfall in May: 0"
The month with the highest snowfall is March (3.03").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Potomac, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (4.8 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
Potomac, MD
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
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 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in May
Potomac, MD
- Average sunshine days in May: 11.7 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in May
Potomac, 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, November and December (UV index 2).
Average cloud cover in May
Potomac, MD
- Average cloud cover in May: 44
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Potomac, 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).
Potomac, Maryland, USA
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