September weather forecast
Rockwood Beach, MD

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Weather in September

September, the first month of the autumn in Rockwood Beach, is still a warm month, with an average temperature ranging between max 77.4°F (25.2°C) and min 63.3°F (17.4°C).

Temperature

The shift from August to September coincides with a small decrease in the average high-temperature, down to a still moderately hot 77.4°F (25.2°C) from 83.7°F (28.7°C). In September, Rockwood Beach experiences an average nighttime temperature of 63.3°F (17.4°C).

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Rockwood Beach, during September, the rain falls for 12.3 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Rockwood Beach, during the entire year, the rain falls for 156.2 days and collects up to 31.34" (796mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In Rockwood Beach, the average length of the day in September 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, sunrise is at 7:01 am and sunset at 6:49 pm EDT.

Sunshine

The average sunshine in September is 9.1h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum daily UV index of 5 during September morphs into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

Rockwood Beach in September has an average high-temperature of 77.4°F (25.2°C) and an average low-temperature of 63.3°F (17.4°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 91.4°F (33°C).

What is the average humidity in September?

In Rockwood Beach, the average relative humidity in September is 74%.

How many days does it rain in September?

In Rockwood Beach, in September, it is raining for 12.3 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow?

In Rockwood Beach, snow does not fall in May through October.

How many hours of daylight does Rockwood Beach have in September?

In Rockwood Beach, the average day length in September is 12h and 26min.

What time are sunrise and sunset in September in Rockwood Beach?

On the first day of September, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:49 pm EDT.

How long on average sun shines in September?

In Rockwood Beach, the average sunshine duration in September is 9.1h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes 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
Rockwood Beach, MD

Average temperature in September - Rockwood Beach, MD
  • Average high temperature in September: 77.4°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 (39.6°F).

  • Average low temperature in September: 63.3°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

Average pressure in September
Rockwood Beach, MD

Average pressure in September - Rockwood Beach, 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).

Average wind speed in September
Rockwood Beach, MD

Average wind speed in September - Rockwood Beach, MD
  • Average wind speed in September: 7mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

Average humidity in September
Rockwood Beach, MD

Average humidity in September - Rockwood Beach, MD
  • Average humidity in September: 74%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).

Average rainfall in September
Rockwood Beach, MD

Average rainfall in September - Rockwood Beach, MD
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is January (2.01").

Average rainfall days in September
Rockwood Beach, MD

Average rainfall days in September - Rockwood Beach, MD
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in September
Rockwood Beach, MD

Average snowfall in September - Rockwood Beach, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Rockwood Beach, MD

Average snowfall days in September - Rockwood Beach, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Rockwood Beach, MD

Average daylight in September / Average sunshine in September - Rockwood Beach, 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 54min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in September
Rockwood Beach, MD

Average sunshine days in September - Rockwood Beach, MD
  • Average sunshine days in September: 16.1 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in September
Rockwood Beach, MD

Average UV index in September - Rockwood Beach, 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 and December (UV index 2).

Average cloud cover in September
Rockwood Beach, MD

Average cloud cover in September - Rockwood Beach, MD
  • Average cloud cover in September: 34

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in September
Rockwood Beach, MD

Average visibility in September - Rockwood Beach, 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).

Rockwood Beach, Maryland, USA

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