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
September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a warm 76.6°F (24.8°C) in August to an agreeable 69.4°F (20.8°C). Livermore, in September, witnesses an average low-temperature of 48.6°F (9.2°C).Humidity
In Livermore, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 10.4 days. Throughout September, 1.65" (42mm) of precipitation is accumulated. Throughout the year, there are 139.5 rainfall days, and 28.78" (731mm) of precipitation is accumulated.Snowfall
In Livermore, snow does not fall in June through September.Daylight
In Livermore, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:04 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:22 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 3 in September translates into this advice:
Undertake precautions - Obligation exists to protect against skin and eye damage. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. 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
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Livermore have in September?
What is the UV index intensity in September?
Average temperature in September
Livermore, ME
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in September: 48.6°F
The month with the highest average low temperature is July (56.3°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in September
Livermore, ME
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Livermore, ME
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is March (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Livermore, ME
- Average humidity in September: 79%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Livermore, ME
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is July (1.61").
Average rainfall days in September
Livermore, ME
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is May (15.7 days).
The months with the least rainy days are January and February (7 days).
Average snowfall in September
Livermore, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Livermore, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is March (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Livermore, 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 2min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Livermore, ME
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is April (12.1 days).
Average UV index in September
Livermore, ME
- Average UV index in September: 3
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
Livermore, ME
- Average cloud cover in September: 38
The months with the most cloud cover are February and April (Cloud cover 54).
The month with the least cloud cover is September (Cloud cover 38).
Average visibility in September
Livermore, ME
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (5mi).
The month with the lowest visibility is August (4mi).
Livermore, Maine, USA
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