September weather forecast
Chestertown, NY

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Weather in September

September, the first month of the autumn in Chestertown, is still a comfortable month, with an average temperature varying between 47.5°F (8.6°C) and 67.1°F (19.5°C).

Temperature

Chestertown records a mild change in average high-temperature during September, easing from a moderately hot 74.1°F (23.4°C) in August to an enjoyable 67.1°F (19.5°C). Chestertown experiences a steady low-temperature of 47.5°F (8.6°C) throughout September.

Humidity

In Chestertown, the average relative humidity in September is 81%.

Rainfall

In September, in Chestertown, the rain falls for 11.1 days. Throughout September, 1.06" (27mm) of precipitation is accumulated. Throughout the year, there are 160 rainfall days, and 15.04" (382mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Chestertown, the average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 6:19 am and sunset at 7:30 pm. On the last day of September, in Chestertown, sunrise is at 6:52 am and sunset at 6:37 pm EDT.

Sunshine

The average sunshine in September is 8.1h.

UV index

In Chestertown, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 3 in September translates into this advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What are September temperatures in Chestertown?

In September, the average high-temperature and low-temperature in Chestertown are 67.1°F (19.5°C) and 47.5°F (8.6°C) respectively.

What is the average humidity in September in Chestertown?

The average relative humidity in September in Chestertown, New York, is 81%.

How many days does it rain in September in Chestertown?

In Chestertown, in September, during 11.1 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

When it does not snow in Chestertown?

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

Does it snow in Chestertown in September?

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

How many hours of daylight does Chestertown have in September?

In Chestertown, New York, the average day length in September is 12h and 29min.

What time are sunrise and sunset in September in Chestertown?

On the first day of September, sunrise is at 6:19 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:37 pm EDT.

How many hours of sunshine does Chestertown have in September?

The average sunshine duration in September is 8.1h.

What is the UV index reading in September in Chestertown?

In Chestertown, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from 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
Chestertown, NY

Average temperature in September - Chestertown, NY
  • Average high temperature in September: 67.1°F

The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (23.7°F).

  • Average low temperature in September: 47.5°F

The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).

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Average pressure in September
Chestertown, NY

Average pressure in September - Chestertown, NY
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in September
Chestertown, NY

Average wind speed in September - Chestertown, NY
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in September
Chestertown, NY

Average humidity in September - Chestertown, NY
  • Average humidity in September: 81%

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (77%).

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Average rainfall in September
Chestertown, NY

Average rainfall in September - Chestertown, NY
  • Average rainfall in September: 1.06"

The wettest month (with the highest rainfall) is October (1.73").
The driest months (with the least rainfall) are January and February (0.91").

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Average rainfall days in September
Chestertown, NY

Average rainfall days in September - Chestertown, NY
  • Average rainfall days in September: 11.1 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (8.3 days).

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Average snowfall in September
Chestertown, NY

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

The month with the highest snowfall is December (3.82").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Chestertown, NY

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

The month with the highest number of snowfall days is January (20 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
Chestertown, NY

Average daylight in September / Average sunshine in September - Chestertown, NY
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in September: 8h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).

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Average sunshine days in September
Chestertown, NY

Average sunshine days in September - Chestertown, NY
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is February (7.8 days).

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Average UV index in September
Chestertown, NY

Average UV index in September - Chestertown, NY
  • 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 and December (UV index 1).

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Average cloud cover in September
Chestertown, NY

Average cloud cover in September - Chestertown, NY
  • Average cloud cover in September: 43

The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 40).

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Average visibility in September
Chestertown, NY

Average visibility in September - Chestertown, NY
  • Average visibility in September: 4mi

The months with the highest visibility are April, May, June, July, October, November and December (5mi).
The months with the lowest visibility are January, February, March, August and September (4mi).

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Chestertown, New York, USA

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