September weather forecastFreeport, ME
September
Weather in September
As the city ushers in September, Freeport commences its gentle transition towards the autumn season. While the weather can still fluctuate, mirroring the warmth of August, it considerably cools by the month-end. Traditional hallmarks of Autumn, such as changing leaf colors and crisp evening air, herald a shift in seasons. Reduced daylight hours from 15.1 hours in July to 12.5 hours signifies an impending change. It’s an outstanding time to witness the city's transformation from lush summer hues to vibrant fall colors.Temperature
September implies a soft temperature shift, with average high-temperatures reducing from August's warm 74.3°F (23.5°C) to a refreshing 67.8°F (19.9°C). The low-temperature average for Freeport during September stands at a fresh 54.1°F (12.3°C).Humidity
In September, the average relative humidity in Freeport, Maine, 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
June through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 30min.On the first day of September, sunrise is at 6:04 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 6:22 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, an average UV index of 4 transforms into the following instructions:
Undertake precautions - It is suggested to shield oneself from sunburn. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Freeport, 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
Freeport, 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
Freeport, 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
Freeport, 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
Freeport, 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
Freeport, 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
Freeport, 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
Freeport, 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
Freeport, ME
- Average daylight in September: 12h and 30min
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 42min
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
Freeport, 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
Freeport, 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
Freeport, 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
Freeport, 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).
