September weather forecast
Baltimore Highlands, MD

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Baltimore Highlands, Maryland, with an average temperature varying between 77°F (25°C) and 61.3°F (16.3°C).

Temperature

September's onset introduces a mild reduction in the average high-temperature, from a moderately hot 83.5°F (28.6°C) in August to a still warm 77°F (25°C). During the month of September, the temperature generally drops to a low average of 61.3°F (16.3°C).

Humidity

In September, the average relative humidity is 75%.

Rainfall

In September, the rain falls for 13.2 days. Throughout September, 2.24" (57mm) of precipitation is accumulated. In Baltimore Highlands, during the entire year, the rain falls for 158.5 days and collects up to 30.75" (781mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 26min.
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 7:02 am and sunset at 6:49 pm EDT.

Sunshine

In Baltimore Highlands, the average sunshine in September is 9.2h.

UV index

In September, the average daily maximum UV index in Baltimore Highlands, Maryland, is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Take precautions - Protection against sun damage is advised. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Baltimore Highlands in September?

In September, the average high-temperature and low-temperature are 77°F (25°C) and 61.3°F (16.3°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is estimated at 89.6°F (32°C).

What is the average humidity in September?

The average relative humidity in September is 75%.

How much does it rain in September?

In September, the rain falls for 13.2 days. Throughout September, 2.24" (57mm) of precipitation is accumulated.

When it does not snow?

In Baltimore Highlands, snow does not fall in April through October.

How many hours of daylight does Baltimore Highlands have in September?

In Baltimore Highlands, the average day length in September is 12h and 26min.

When are sunrise and sunset in September?

In September, on the first day of the month, 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 6:49 pm EDT.

How many hours of sunshine does Baltimore Highlands have in September?

In September, the average sunshine duration is 9.2h.

How high is the UV index in September?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
Baltimore Highlands, MD

Average temperature in September - Baltimore Highlands, MD
  • Average high temperature in September: 77°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (38.5°F).

  • Average low temperature in September: 61.3°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).

Average pressure in September
Baltimore Highlands, MD

Average pressure in September - Baltimore Highlands, 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
Baltimore Highlands, MD

Average wind speed in September - Baltimore Highlands, MD
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in September
Baltimore Highlands, MD

Average humidity in September - Baltimore Highlands, 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, July and November (72%).

Average rainfall in September
Baltimore Highlands, MD

Average rainfall in September - Baltimore Highlands, MD
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (1.85").

Average rainfall days in September
Baltimore Highlands, MD

Average rainfall days in September - Baltimore Highlands, MD
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is November (8.4 days).

Average snowfall in September
Baltimore Highlands, MD

Average snowfall in September - Baltimore Highlands, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.09").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Baltimore Highlands, MD

Average snowfall days in September - Baltimore Highlands, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.2 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
Baltimore Highlands, MD

Average daylight in September / Average sunshine in September - Baltimore Highlands, 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 February (Average sunshine: 5h and 0min).

Average sunshine days in September
Baltimore Highlands, MD

Average sunshine days in September - Baltimore Highlands, MD
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (10.3 days).

Average UV index in September
Baltimore Highlands, MD

Average UV index in September - Baltimore Highlands, 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).

Average cloud cover in September
Baltimore Highlands, MD

Average cloud cover in September - Baltimore Highlands, MD
  • Average cloud cover in September: 34

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

Average visibility in September
Baltimore Highlands, MD

Average visibility in September - Baltimore Highlands, 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).

Baltimore Highlands, Maryland, USA

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