September weather forecast
Marietta, NY

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Weather in September

September, the first month of the autumn in Marietta, is still a pleasant month, with an average temperature varying between 70.2°F (21.2°C) and 51.6°F (10.9°C).

Temperature

In September, the meteorological conditions change slightly, with the average high-temperature moving from a warm 76.5°F (24.7°C) in August to a pleasant 70.2°F (21.2°C). The average nighttime temperature in Marietta lowers to a cool 51.6°F (10.9°C) throughout September.

Humidity

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

Rainfall

The month with the least rainfall is September, when the rain falls for 10.5 days and typically collects 0.67" (17mm) of precipitation.

Snowfall

June through September are months without snowfall in Marietta.

Daylight

The average length of the day in September in Marietta is 12h and 29min.
On the first day of the month, sunrise is at 6:30 am and sunset at 7:39 pm. On the last day of September, in Marietta, sunrise is at 7:02 am and sunset at 6:47 pm EDT.

Sunshine

In Marietta, the average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: The UV index of 3 during September translates into the following guidance:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Frequently asked questions

What is the temperature in September in Marietta?

The high-temperature in Marietta during September is 70.2°F (21.2°C) and the low-temperature is 51.6°F (10.9°C).

What is the average humidity in September in Marietta?

The average relative humidity in September in Marietta is 80%.

What is the driest month in Marietta?

September is the month with the least rainfall in Marietta, New York. Rain falls for 10.5 days and accumulates 0.67" (17mm) of precipitation.

How many days does it rain in September in Marietta?

In Marietta, New York, during September, the rain falls for 10.5 days and regularly aggregates up to 0.67" (17mm) of precipitation.

When it does not snow in Marietta?

June through September are months without snowfall in Marietta, New York.

Does it snow in Marietta in September?

In Marietta, New York, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Marietta have in September?

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

When are sunrise and sunset in September in Marietta?

On the first day of September in Marietta, New York, sunrise is at 6:30 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:47 pm EDT.

How long on average sun shines in September in Marietta?

In September, the average sunshine duration in Marietta, New York, is 8.9h.

How high is the UV index in September in Marietta?

In September, the average daily maximum UV index in Marietta, New York, is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
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
Marietta, NY

Average temperature in September - Marietta, NY
  • Average high temperature in September: 70.2°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in September: 51.6°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

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Average pressure in September
Marietta, NY

Average pressure in September - Marietta, NY
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
Marietta, NY

Average wind speed in September - Marietta, NY
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6mph).

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Average humidity in September
Marietta, NY

Average humidity in September - Marietta, NY
  • Average humidity in September: 80%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (79%).

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Average rainfall in September
Marietta, NY

Average rainfall in September - Marietta, NY
  • Average rainfall in September: 0.67"

The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is September (0.67").

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Average rainfall days in September
Marietta, NY

Average rainfall days in September - Marietta, NY
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (6.7 days).

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Average snowfall in September
Marietta, NY

Average snowfall in September - Marietta, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Marietta, NY

Average snowfall days in September - Marietta, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (18.1 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
Marietta, NY

Average daylight in September / Average sunshine in September - Marietta, NY
  • 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 6min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).

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Average sunshine days in September
Marietta, NY

Average sunshine days in September - Marietta, NY
  • Average sunshine days in September: 17.1 days

The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is February (7.9 days).

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Average UV index in September
Marietta, NY

Average UV index in September - Marietta, NY
  • Average UV index in September: 3

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in September
Marietta, NY

Average cloud cover in September - Marietta, NY
  • Average cloud cover in September: 36

The month with the most cloud cover is February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 33).

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Average visibility in September
Marietta, NY

Average visibility in September - Marietta, NY
  • Average visibility in September: 6mi

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

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Marietta, New York, USA

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