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 76.1°F (24.5°C) and 56.8°F (13.8°C).

Temperature

With the arrival of September, Antietam Farmettes experiences a modest decline in average high-temperatures, transitioning from a moderately hot 83.3°F (28.5°C) in August to a still warm 76.1°F (24.5°C). In September, the average low-temperature records at a mild 56.8°F (13.8°C) during the nights.

Humidity

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

Rainfall

In Antietam Farmettes, in September, it is raining for 13.5 days, with typically 2.09" (53mm) of accumulated precipitation. In Antietam Farmettes, during the entire year, the rain falls for 162.4 days and collects up to 30.16" (766mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in September in Antietam Farmettes is 12h and 26min.
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.

Sunshine

The average sunshine in September is 8.7h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 4 in September leads to these recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

What is the temperature in September in Antietam Farmettes?

The average high-temperature and low-temperature in Antietam Farmettes, Maryland, during September are 76.1°F (24.5°C) and 56.8°F (13.8°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 91.4°F (33°C).

What is the average humidity in September in Antietam Farmettes?

The average relative humidity in September in Antietam Farmettes, Maryland, is 78%.

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

In Antietam Farmettes, in September, it is raining for 13.5 days, with typically 2.09" (53mm) of accumulated precipitation.

When it does not snow in Antietam Farmettes?

May through September are months without snowfall in Antietam Farmettes.

Does it snow in Antietam Farmettes 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 in Antietam Farmettes?

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

When are sunrise and sunset in September in Antietam Farmettes?

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

How long on average sun shines in September in Antietam Farmettes?

In Antietam Farmettes, Maryland, the average sunshine duration in September is 8.7h.

What is the UV index intensity in September in Antietam Farmettes?

In Antietam Farmettes, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASeptemberOND
Aug
September
Oct
Average high temperature
83.3°F 28.5°C
76.1°F 24.5°C
63.9°F 17.7°C
Average low temperature
62.6°F 17°C
56.8°F 13.8°C
46.2°F 7.9°C
Average pressure
30" 762mmHg
30.06" 764mmHg
30.04" 763mmHg
Average wind speed
4.5mph 7.2km/h
5.1mph 8.2km/h
6.2mph 10km/h
Average max. wind speed
5mph 8km/h
5.3mph 8.5km/h
7mph 11.3km/h
Average wind speed gusts
7.3mph 11.7km/h
8.3mph 13.4km/h
10.3mph 16.6km/h
Average humidity
76%
78%
79%
Average rainfall
2.91" 74mm
2.09" 53mm
2.68" 68mm
Average rainfall days
16.3
13.5
12.8
Average snowfall
0" 0mm
0" 0mm
0.31" 8mm
Average snowfall days
0
0
0.1
Average daylight
13h 4min
12h 2min
11h 1min
Average sunshine
10h 1min
8h 4min
5h 3min
Average sunshine days
12.8
14.7
16.4
Average UV index
6
4
3
Average cloud cover
33%
39%
42%
Average visibility
6mi 9.7km
5mi 8km
5mi 8km

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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Antietam Farmettes, Maryland, USA

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