September weather forecast
Berwick, ME

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Weather in September

September, the first month of the autumn in Berwick, is still a pleasant month, with temperature in the range of an average low of 52.9°F (11.6°C) and an average high of 69.6°F (20.9°C).

Temperature

In Berwick, entering September brings a subtle temperature decrement, reducing from August's warm 77.4°F (25.2°C) to a pleasant 69.6°F (20.9°C). An average temperature of 52.9°F (11.6°C) marks the nights in September.

Humidity

In September, the average relative humidity is 79%.

Rainfall

September is the month with the least rainfall in Berwick. Rain falls for 11.8 days and accumulates 1.5" (38mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Berwick, the average length of the day in September is 12h and 29min.
On the first day of September, sunrise is at 6:08 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:25 pm EDT.

Sunshine

In September, the average sunshine is 8.3h.

UV index

In Berwick, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: In September, the UV index of 4 transforms into the following advice:
Take necessary precautions - Defending against sun damage is advocated. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.

Frequently asked questions

What is the average September temperature?

The average high-temperature, in September, in Berwick, is 69.6°F (20.9°C), while the average low-temperature is 52.9°F (11.6°C).

What is the average humidity in September in Berwick?

In Berwick, the average relative humidity in September is 79%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.5" (38mm) of precipitation.

How much does it rain in Berwick in September?

In Berwick, in September, it is raining for 11.8 days, with typically 1.5" (38mm) of accumulated precipitation.

When it does not snow?

In Berwick, snow does not fall in June through September.

Does it snow in September?

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

How many hours of daylight does Berwick have in September?

In Berwick, the average day length in September is 12h and 29min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:08 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:25 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.3h.

How high is the UV index in September?

In Berwick, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Berwick, ME

Average temperature in September - Berwick, ME
  • Average high temperature in September: 69.6°F

The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in September: 52.9°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

Average pressure in September
Berwick, ME

Average pressure in September - Berwick, ME
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in September
Berwick, ME

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

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in September
Berwick, ME

Average humidity in September - Berwick, ME
  • Average humidity in September: 79%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is April (75%).

Average rainfall in September
Berwick, ME

Average rainfall in September - Berwick, ME
  • Average rainfall in September: 1.5"

The wettest months (with the highest rainfall) are October and December (3.11").
The driest month (with the least rainfall) is September (1.5").

Average rainfall days in September
Berwick, ME

Average rainfall days in September - Berwick, ME
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is February (6.8 days).

Average snowfall in September
Berwick, ME

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

The month with the highest snowfall is December (6.69").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Berwick, ME

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

The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Berwick, ME
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in September
Berwick, ME

Average sunshine days in September - Berwick, ME
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is April (13.3 days).

Average UV index in September
Berwick, ME

Average UV index in September - Berwick, ME
  • Average UV index in September: 4

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in September
Berwick, ME

Average cloud cover in September - Berwick, ME
  • Average cloud cover in September: 35

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in September
Berwick, ME

Average visibility in September - Berwick, 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).

Berwick, Maine, USA

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