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
With October's arrival, Great Falls sees a decrease in average high-temperatures, moving from a moderately hot 78.4°F (25.8°C) in September to a comfortable 66.2°F (19°C). An average temperature of 49.6°F (9.8°C) marks the nights in Great Falls in October.Humidity
The months with the highest humidity are October and December, with an average relative humidity of 76%.Rainfall
In Great Falls, Virginia, during October, the rain falls for 12 days and regularly aggregates up to 2.28" (58mm) of precipitation. In Great Falls, during the entire year, the rain falls for 152.8 days and collects up to 27.64" (702mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in October is 11h and 10min.On the first day of October, sunrise is at 7:05 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 6:09 pm EDT.
Sunshine
In October, the average sunshine is 5.6h.UV index
The average daily maximum UV index in October is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum daily UV index of 4 during October morphs into the following directions:
Exercise prevention - Protecting skin and eyes from harm is required. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What are October temperatures in Great Falls?
What is the most humid month in Great Falls?
What is the average humidity in October in Great Falls?
How much does it rain in Great Falls in October?
When it does not snow in Great Falls?
Does it snow in Great Falls in October?
What is the average length of the day in October in Great Falls?
When is the sunrise / sunset in October in Great Falls?
How long on average sun shines in October in Great Falls?
What is the UV index reading in October in Great Falls?
Average temperature in October
Great Falls, VA
- Average high temperature in October: 66.2°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in October: 49.6°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 October
Great Falls, VA
- 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
Great Falls, VA
- Average wind speed in October: 6.5mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in October
Great Falls, VA
- 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
Great Falls, VA
- Average rainfall in October: 2.28"
The wettest month (with the highest rainfall) is August (3.39").
The driest month (with the least rainfall) is January (1.77").
Average rainfall days in October
Great Falls, VA
- Average rainfall days in October: 12 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in October
Great Falls, VA
- Average snowfall in October: 0"
The month with the highest snowfall is January (2.28").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Great Falls, VA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is January (4.6 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
Great Falls, VA
- 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 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 0min).
Average sunshine days in October
Great Falls, VA
- Average sunshine days in October: 17.1 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in October
Great Falls, VA
- 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
Great Falls, VA
- Average cloud cover in October: 40
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
Great Falls, VA
- 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).
Great Falls, Virginia, USA
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