September weather forecast
Chestnut Farms, MD

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Chestnut Farms, Maryland, with an average temperature ranging between max 76.8°F (24.9°C) and min 60.4°F (15.8°C).

Temperature

With the arrival of September, Chestnut Farms experiences a modest decline in average high-temperatures, transitioning from 83.5°F (28.6°C) in August to a still moderately hot 76.8°F (24.9°C). During the nights in September, Chestnut Farms observes an average low-temperature of 60.4°F (15.8°C).

Humidity

In Chestnut Farms, the average relative humidity in September is 75%.

Rainfall

In Chestnut Farms, during September, the rain falls for 13.1 days and regularly aggregates up to 2.17" (55mm) of precipitation. In Chestnut Farms, during the entire year, the rain falls for 165.5 days and collects up to 31.65" (804mm) of precipitation.

Snowfall

In Chestnut Farms, snow does not fall in May through October.

Daylight

In Chestnut Farms, Maryland, the average length of the day in September is 12h and 26min.
On the first day of September in Chestnut Farms, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:50 pm EDT.

Sunshine

In Chestnut Farms, the average sunshine in September is 9.1h.

UV index

In September, the average daily maximum UV index in Chestnut Farms, Maryland, is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index, 5 during September, leads to the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What are September temperatures in Chestnut Farms?

The average high-temperature and low-temperature in Chestnut Farms, Maryland, during September are 76.8°F (24.9°C) and 60.4°F (15.8°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 89.6°F (32°C).

What is the average humidity in September in Chestnut Farms?

In Chestnut Farms, the average relative humidity in September is 75%.

How many days does it rain in September in Chestnut Farms?

In September, in Chestnut Farms, the rain falls for 13.1 days. Throughout September, 2.17" (55mm) of precipitation is accumulated.

When it does not snow in Chestnut Farms?

In Chestnut Farms, snow does not fall in May through October.

What is the average length of the day in September in Chestnut Farms?

In September, the average day length in Chestnut Farms, Maryland, is 12h and 26min.

What time are sunrise and sunset in September in Chestnut Farms?

On the first day of September in Chestnut Farms, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:50 pm EDT.

How long on average sun shines in September in Chestnut Farms?

In September, the average sunshine duration in Chestnut Farms, Maryland, is 9.1h.

What is the UV index reading in September in Chestnut Farms?

In September, the average daily maximum UV index in Chestnut Farms is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Chestnut Farms, MD

Average temperature in September - Chestnut Farms, MD
  • Average high temperature in September: 76.8°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in September: 60.4°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

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Average pressure in September
Chestnut Farms, MD

Average pressure in September - Chestnut Farms, MD
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Chestnut Farms, MD

Average wind speed in September - Chestnut Farms, MD
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in September
Chestnut Farms, MD

Average humidity in September - Chestnut Farms, MD
  • Average humidity in September: 75%

The months with the highest relative humidity are May and October (77%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in September
Chestnut Farms, MD

Average rainfall in September - Chestnut Farms, MD
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is August (3.74").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in September
Chestnut Farms, MD

Average rainfall days in September - Chestnut Farms, MD
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.7 days).

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Average snowfall in September
Chestnut Farms, MD

Average snowfall in September - Chestnut Farms, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Chestnut Farms, MD

Average snowfall days in September - Chestnut Farms, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Chestnut Farms, MD

Average daylight in September / Average sunshine in September - Chestnut Farms, MD
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in September
Chestnut Farms, MD

Average sunshine days in September - Chestnut Farms, MD
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.4 days).

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Average UV index in September
Chestnut Farms, MD

Average UV index in September - Chestnut Farms, MD
  • Average UV index in September: 5

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

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Average cloud cover in September
Chestnut Farms, MD

Average cloud cover in September - Chestnut Farms, MD
  • Average cloud cover in September: 35

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in September
Chestnut Farms, MD

Average visibility in September - Chestnut Farms, MD
  • Average visibility in September: 6mi

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

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Chestnut Farms, Maryland, USA

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