September weather forecast
Antietam Farmettes, MD

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Weather in September

September, the first month of the autumn in Antietam Farmettes, is also a moderately hot month, with an average temperature varying between 56.8°F (13.8°C) and 76.1°F (24.5°C).

Temperature

With the onset of September, Antietam Farmettes's average high-temperature slightly adjusts, moderately receding from August's moderately hot 83.3°F (28.5°C) to a still warm 76.1°F (24.5°C). Throughout September, an average low-temperature of 56.8°F (13.8°C) is expected.

Humidity

In September, the average relative humidity is 78%.

Rainfall

In Antietam Farmettes, in September, it is raining for 13.5 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, there are 162.4 rainfall days, and 30.16" (766mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In Antietam Farmettes, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:39 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:54 pm EDT.

Sunshine

The average sunshine in September is 8.7h.

UV index

In Antietam Farmettes, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A maximum daily UV index of 4 during September morphs into the following directions:
Guard yourself - An obligation to protect skin and eyes from harm exists. It's recommended to limit sun exposure when its radiation is at its peak during midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Antietam Farmettes in September?

In Antietam Farmettes, in September, the average high-temperature is 76.1°F (24.5°C), and the average low-temperature is 56.8°F (13.8°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is estimated at 91.4°F (33°C).

What is the average humidity in September?

In Antietam Farmettes, the average relative humidity in September is 78%.

How many days does it rain in September in Antietam Farmettes?

In September, the rain falls for 13.5 days. Throughout September, 2.09" (53mm) of precipitation is accumulated.

When it does not snow?

In Antietam Farmettes, snow does not fall in May through September.

Does it snow in September?

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

What is the average length of the day in September?

The average day length in September is 12h and 26min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:39 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:54 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.7h.

What is the UV index reading in September?

In Antietam Farmettes, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to 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
Antietam Farmettes, MD

Average temperature in September - Antietam Farmettes, MD
  • Average high temperature in September: 76.1°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 (37°F).

  • Average low temperature in September: 56.8°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in September
Antietam Farmettes, MD

Average pressure in September - Antietam Farmettes, MD
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
Antietam Farmettes, MD

Average wind speed in September - Antietam Farmettes, MD
  • Average wind speed in September: 5.1mph

The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in September
Antietam Farmettes, MD

Average humidity in September - Antietam Farmettes, MD
  • Average humidity in September: 78%

The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).

Average rainfall in September
Antietam Farmettes, MD

Average rainfall in September - Antietam Farmettes, MD
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (1.97").

Average rainfall days in September
Antietam Farmettes, MD

Average rainfall days in September - Antietam Farmettes, MD
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in September
Antietam Farmettes, MD

Average snowfall in September - Antietam Farmettes, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (4.72").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Antietam Farmettes, MD

Average snowfall days in September - Antietam Farmettes, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Antietam Farmettes, MD

Average daylight in September / Average sunshine in September - Antietam Farmettes, 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 24min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in September
Antietam Farmettes, MD

Average sunshine days in September - Antietam Farmettes, MD
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is April (11 days).

Average UV index in September
Antietam Farmettes, MD

Average UV index in September - Antietam Farmettes, MD
  • Average UV index in September: 4

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).

Average cloud cover in September
Antietam Farmettes, MD

Average cloud cover in September - Antietam Farmettes, MD
  • Average cloud cover in September: 39

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in September
Antietam Farmettes, MD

Average visibility in September - Antietam Farmettes, MD
  • Average visibility in September: 5mi

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

Antietam Farmettes, Maryland, USA

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