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 onset of September entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 75.9°F (24.4°C) in August to a pleasant 68.9°F (20.5°C). Liberty records an average nighttime low of 49.3°F (9.6°C) in September.Humidity
In Liberty, the average relative humidity in September is 81%.Rainfall
September is the month with the least rainfall. Rain falls for 10.5 days and accumulates 1.61" (41mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:13 pm. On the last day of September, sunrise is at 6:34 am and sunset at 6:19 pm EDT.
Sunshine
In Liberty, the average sunshine in September is 8.2h.UV index
In Liberty, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
What is the driest month in Liberty?
How many days does it rain in September?
When it does not snow in Liberty?
Does it snow in Liberty in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September in Liberty?
What is the UV index intensity in September?
Average temperature in September
Liberty, ME
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 49.3°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in September
Liberty, ME
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Liberty, ME
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Liberty, ME
- Average humidity in September: 81%
The months with the highest relative humidity are January, February and March (84%).
The months with the lowest relative humidity are April and November (78%).
Average rainfall in September
Liberty, ME
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in September
Liberty, ME
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is February (6 days).
Average snowfall in September
Liberty, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (7.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Liberty, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Liberty, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Liberty, ME
- Average sunshine days in September: 16.8 days
The months with the most sunshine days are September and November (16.8 days).
The month with the least sunshine days is April (11.3 days).
Average UV index in September
Liberty, 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, October, November and December (UV index 2).
Average cloud cover in September
Liberty, ME
- Average cloud cover in September: 39
The months with the most cloud cover are February, March and April (Cloud cover 54).
The month with the least cloud cover is September (Cloud cover 39).
Average visibility in September
Liberty, ME
- Average visibility in September: 5mi
The months with the highest visibility are November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and October (5mi).
Liberty, Maine, USA
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