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
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a warm 74.3°F (23.5°C) to a comfortable 67.8°F (19.9°C). Falmouth's September nights cool down to an average low-temperature of 54.1°F (12.3°C).Humidity
In Falmouth, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 9.5 days and accumulates 1.14" (29mm) of precipitation.Snowfall
In Falmouth, snow does not fall in June through October.Daylight
In Falmouth, Maine, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:05 am and sunset at 7:16 pm. On the last day of September, sunrise is at 6:38 am and sunset at 6:23 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in Falmouth in September?
When it does not snow?
How many hours of daylight does Falmouth have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Falmouth have in September?
What is the UV index reading in September?
Average temperature in September
Falmouth, ME
- Average high temperature in September: 67.8°F
The warmest month (with the highest average high temperature) is July (74.7°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Falmouth, ME
- Average pressure in September: 30.05"Hg
The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Falmouth, ME
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Falmouth, ME
- Average humidity in September: 79%
The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is November (75%).
Average rainfall in September
Falmouth, ME
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is October (2.28").
The driest month (with the least rainfall) is September (1.14").
Average rainfall days in September
Falmouth, ME
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is January (6 days).
Average snowfall in September
Falmouth, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Falmouth, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Falmouth, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Falmouth, ME
- Average sunshine days in September: 18.5 days
The months with the most sunshine days are January and September (18.5 days).
The month with the least sunshine days is April (13 days).
Average UV index in September
Falmouth, ME
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Falmouth, ME
- Average cloud cover in September: 32
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Falmouth, ME
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Falmouth, Maine, USA
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