Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
October brings a decrease in the average high-temperature, shifting from a warm 78.3°F (25.7°C) in September to a refreshing 65.8°F (18.8°C). Throughout the month of October, Potomac expects an average low of 49.8°F (9.9°C).Humidity
The months with the highest humidity in Potomac are October and December, with an average relative humidity of 76%.Rainfall
In Potomac, in October, it is raining for 12.1 days, with typically 2.4" (61mm) of accumulated precipitation. In Potomac, during the entire year, the rain falls for 156.5 days and collects up to 30.71" (780mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In October, the average length of the day in Potomac is 11h and 10min.On the first day of the month, sunrise is at 7:05 am and sunset at 6:51 pm. On the last day of October, in Potomac, sunrise is at 7:35 am and sunset at 6:08 pm EDT.
Sunshine
In October, the average sunshine is 5.6h.UV index
In Potomac, Maryland, the average daily maximum UV index in October is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 4 during October translates into the following directions:
Take necessary precautions - Protection from skin and eye injury is mandatory. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What are the temperatures in Potomac in October?
What is the most humid month in Potomac?
What is the average humidity in October in Potomac?
How much does it rain in Potomac in October?
When it does not snow in Potomac?
Does it snow in Potomac in October?
How many hours of daylight does Potomac have in October?
When is the sunrise / sunset in October in Potomac?
How many hours of sunshine does Potomac have in October?
How high is the UV index in October in Potomac?
Average temperature in October
Potomac, MD
- Average high temperature in October: 65.8°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 October: 49.8°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 October
Potomac, MD
- Average pressure in October: 30.04"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 October
Potomac, MD
- Average wind speed in October: 6.5mph
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 October
Potomac, MD
- Average humidity in October: 76%
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 October
Potomac, MD
- Average rainfall in October: 2.4"
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 October
Potomac, MD
- Average rainfall days in October: 12.1 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 October
Potomac, MD
- Average snowfall in October: 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 October
Potomac, MD
- Average snowfall days in October: 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 October /
Average sunshine in October
Potomac, MD
- Average daylight in October: 11h and 1min
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 October: 5h and 4min
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 October
Potomac, MD
- Average sunshine days in October: 17.5 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 October
Potomac, MD
- Average UV index in October: 4
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 October
Potomac, MD
- Average cloud cover in October: 39
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 October
Potomac, MD
- Average visibility in October: 6mi
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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