September weather forecast
Augusta, ME

Beautiful view of the water and skyline in Augusta, Maine, with trees and mountains in a distance
Beautiful view of the water and skyline in Augusta, Maine, with trees and mountains in a distance

Weather in September

The first month of the autumn, September, is still a pleasant month in Augusta, Maine, with an average temperature fluctuating between 68.9°F (20.5°C) and 50.5°F (10.3°C).

Temperature

In September, the average high-temperature marginally drops from a moderately hot 76.1°F (24.5°C) in August to an agreeable 68.9°F (20.5°C). In Augusta, the average low-temperature is 50.5°F (10.3°C).

Humidity

The average relative humidity in September is 80%.

Rainfall

September is the month with the least rainfall in Augusta. Rain falls for 9.8 days and accumulates 1.42" (36mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Augusta, the average length of the day in September is 12h and 30min.
On the first day of the month, sunrise is at 6:01 am and sunset at 7:16 pm. On the last day of September, sunrise is at 6:35 am and sunset at 6:22 pm EDT.

Sunshine

The average sunshine in September in Augusta is 8.5h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Augusta?

In Augusta, in September, the average high-temperature is 68.9°F (20.5°C), and the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in September in Augusta?

In September, the average relative humidity in Augusta is 80%.

What is the driest month in Augusta?

The month with the least rainfall in Augusta is September, when the rain falls for 9.8 days and typically collects 1.42" (36mm) of precipitation.

How many days does it rain in September in Augusta?

In Augusta, in September, during 9.8 rainfall days, 1.42" (36mm) of precipitation is typically accumulated.

When it does not snow in Augusta?

June through September are months without snowfall in Augusta.

Does it snow in Augusta in September?

In Augusta, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Augusta have in September?

The average day length in September is 12h and 30min.

What time are sunrise and sunset in September in Augusta?

On the first day of September in Augusta, Maine, sunrise is at 6:01 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:22 pm EDT.

How many hours of sunshine does Augusta have in September?

In September, the average sunshine duration in Augusta, Maine, is 8.5h.

What is the UV index reading in September in Augusta?

In Augusta, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Augusta, ME

Average temperature in September - Augusta, ME
  • Average high temperature in September: 68.9°F

The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in September: 50.5°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

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Average pressure in September
Augusta, ME

Average pressure in September - Augusta, 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).

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Average wind speed in September
Augusta, ME

Average wind speed in September - Augusta, ME
  • Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in September
Augusta, ME

Average humidity in September - Augusta, ME
  • Average humidity in September: 80%

The months with the highest relative humidity are January, February and March (83%).
The month with the lowest relative humidity is November (76%).

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Average rainfall in September
Augusta, ME

Average rainfall in September - Augusta, ME
  • Average rainfall in September: 1.42"

The wettest month (with the highest rainfall) is October (2.95").
The driest month (with the least rainfall) is September (1.42").

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Average rainfall days in September
Augusta, ME

Average rainfall days in September - Augusta, ME
  • Average rainfall days in September: 9.8 days

The month with the highest number of rainy days is June (16 days).
The month with the least rainy days is January (7 days).

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Average snowfall in September
Augusta, ME

Average snowfall in September - Augusta, ME
  • Average snowfall in September: 0"

The month with the highest snowfall is February (6.77").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Augusta, ME

Average snowfall days in September - Augusta, ME
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Augusta, ME

Average daylight in September / Average sunshine in September - Augusta, ME
  • Average daylight in September: 12h and 30min

The month with the longest days is June (Average daylight: 15h and 28min).
The month with the shortest days is December (Average daylight: 8h and 55min).

  • Average sunshine in September: 8h and 30min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in September
Augusta, ME

Average sunshine days in September - Augusta, ME
  • Average sunshine days in September: 17.7 days

The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is April (11.6 days).

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Average UV index in September
Augusta, ME

Average UV index in September - Augusta, 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).

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Average cloud cover in September
Augusta, ME

Average cloud cover in September - Augusta, ME
  • Average cloud cover in September: 36

The months with the most cloud cover are March and April (Cloud cover 52).
The months with the least cloud cover are August and September (Cloud cover 36).

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Average visibility in September
Augusta, ME

Average visibility in September - Augusta, ME
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).

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