September weather forecast
Patapsco Park, MD

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Patapsco Park, Maryland, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 77.2°F (25.1°C).

Temperature

As September arrives, Patapsco Park's weather displays a minor decrease in high-temperatures, transitioning from August's 83.8°F (28.8°C) to a still warm 77.2°F (25.1°C). Throughout the nights in September, Patapsco Park experiences an average low-temperature of 62.2°F (16.8°C).

Humidity

In Patapsco Park, the average relative humidity in September is 75%.

Rainfall

In Patapsco Park, in September, during 13.1 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Patapsco Park, during the entire year, the rain falls for 156.3 days and collects up to 29.61" (752mm) of precipitation.

Snowfall

April through October are months without snowfall in Patapsco Park.

Daylight

The average length of the day in September in Patapsco Park, Maryland, is 12h and 26min.
On the first day of the month, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of September, in Patapsco Park, sunrise is at 7:02 am and sunset at 6:50 pm EDT.

Sunshine

In Patapsco Park, the average sunshine in September is 9.3h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What is the temperature in September in Patapsco Park?

In September, the average high-temperature and low-temperature in Patapsco Park, Maryland, are 77.2°F (25.1°C) and 62.2°F (16.8°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is evaluated at 91.4°F (33°C).

What is the average humidity in September in Patapsco Park?

The average relative humidity in September is 75%.

How many days does it rain in September in Patapsco Park?

In Patapsco Park, Maryland, in September, during 13.1 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When it does not snow in Patapsco Park?

April through October are months without snowfall.

How many hours of daylight does Patapsco Park have in September?

In September, the average day length in Patapsco Park is 12h and 26min.

When is the sunrise / sunset in September in Patapsco Park?

On the first day of September in Patapsco Park, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm EDT.

How long on average sun shines in September in Patapsco Park?

The average sunshine duration in September is 9.3h.

What is the UV index intensity in September in Patapsco Park?

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's 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
Patapsco Park, MD

Average temperature in September - Patapsco Park, MD
  • Average high temperature in September: 77.2°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 (38.8°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

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Average pressure in September
Patapsco Park, MD

Average pressure in September - Patapsco Park, 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
Patapsco Park, MD

Average wind speed in September - Patapsco Park, MD
  • Average wind speed in September: 6.5mph

The windiest months (with the highest average wind speed) are February and March (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in September
Patapsco Park, MD

Average humidity in September - Patapsco Park, MD
  • Average humidity in September: 75%

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are April and July (72%).

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Average rainfall in September
Patapsco Park, MD

Average rainfall in September - Patapsco Park, MD
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (1.77").

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Average rainfall days in September
Patapsco Park, MD

Average rainfall days in September - Patapsco Park, MD
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (8.6 days).

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Average snowfall in September
Patapsco Park, MD

Average snowfall in September - Patapsco Park, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Patapsco Park, MD

Average snowfall days in September - Patapsco Park, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Patapsco Park, MD

Average daylight in September / Average sunshine in September - Patapsco Park, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

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Average sunshine days in September
Patapsco Park, MD

Average sunshine days in September - Patapsco Park, MD
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (10.9 days).

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Average UV index in September
Patapsco Park, MD

Average UV index in September - Patapsco Park, 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
Patapsco Park, MD

Average cloud cover in September - Patapsco Park, MD
  • Average cloud cover in September: 34

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in September
Patapsco Park, MD

Average visibility in September - Patapsco Park, 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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Patapsco Park, Maryland, USA

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