Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a hot 86.7°F (30.4°C) in August to a warm 79.9°F (26.6°C). During the nights in September, Falmouth observes an average low-temperature of 60.8°F (16°C).Humidity
In Falmouth, Virginia, the average relative humidity in September is 76%.Rainfall
In Falmouth, Virginia, in September, it is raining for 13.2 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, there are 153.8 rainfall days, and 26.73" (679mm) of precipitation is accumulated.Snowfall
In Falmouth, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:39 pm. On the last day of September, in Falmouth, Virginia, sunrise is at 7:05 am and sunset at 6:53 pm EDT.
Sunshine
In Falmouth, Virginia, the average sunshine in September is 8.7h.UV index
In Falmouth, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The UV index of 5 during September leads to these advisories:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun's radiation is especially intense around midday; try to stay in shade during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Falmouth?
What is the average humidity in September in Falmouth?
How much does it rain in Falmouth in September?
When it does not snow in Falmouth?
What is the average length of the day in September in Falmouth?
What time are sunrise and sunset in September in Falmouth?
How many hours of sunshine does Falmouth have in September?
What is the UV index reading in September in Falmouth?
Average temperature in September
Falmouth, VA
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (42.4°F).
- Average low temperature in September: 60.8°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in September
Falmouth, VA
- Average pressure in September: 30.05"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 September
Falmouth, VA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Falmouth, VA
- Average humidity in September: 76%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Falmouth, VA
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is January (1.65").
Average rainfall days in September
Falmouth, VA
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in September
Falmouth, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Falmouth, VA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Falmouth, VA
- Average daylight in September: 12h 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 September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Falmouth, VA
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12.4 days).
Average UV index in September
Falmouth, VA
- Average UV index in September: 5
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 September
Falmouth, VA
- Average cloud cover in September: 39
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 September
Falmouth, VA
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are February, May and September (5mi).
Falmouth, Virginia, USA
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