September weather forecast
The Downs, MD

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Weather in September

The first month of the autumn, September, is also a moderately hot month in The Downs, Maryland, with an average temperature fluctuating between 77.4°F (25.2°C) and 63.3°F (17.4°C).

Temperature

The arrival of September correlates with a minor temperature reduction, down from August's 83.7°F (28.7°C) to a still warm 77.4°F (25.2°C). In September, The Downs reports a consistent average low-temperature of 63.3°F (17.4°C) during the nights.

Humidity

The average relative humidity in September is 75%.

Rainfall

The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.89" (48mm) of precipitation.

Snowfall

In The Downs, snow does not fall in May through October.

Daylight

In The Downs, 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 6:50 pm EDT.

Sunshine

In September, the average sunshine is 9.2h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A daily maximum UV index of 5 in September translates into the following instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for The Downs in September?

The average high-temperature, in September, in The Downs, is 77.4°F (25.2°C), while the average low-temperature is 63.3°F (17.4°C). 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, in August is estimated at 91.4°F (33°C).

What is the average humidity in September?

In September, the average relative humidity is 75%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.89" (48mm) of precipitation.

How many days does it rain in September?

In The Downs, during September, the rain falls for 11.8 days and regularly aggregates up to 1.89" (48mm) of precipitation.

When it does not snow?

In The Downs, snow does not fall in May through October.

How many hours of daylight does The Downs have in September?

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 7:01 am and sunset at 6:50 pm EDT.

How many hours of sunshine does The Downs have in September?

In The Downs, the average sunshine duration in September is 9.2h.

What is the UV index reading in September?

In The Downs, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium hazard to health 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
The Downs, MD

Average temperature in September - The Downs, 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
The Downs, MD

Average pressure in September - The Downs, 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
The Downs, MD

Average wind speed in September - The Downs, 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
The Downs, MD

Average humidity in September - The Downs, MD
  • Average humidity in September: 75%

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
The Downs, MD

Average rainfall in September - The Downs, MD
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days in September
The Downs, MD

Average rainfall days in September - The Downs, MD
  • Average rainfall days in September: 11.8 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
The Downs, MD

Average snowfall in September - The Downs, 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
The Downs, MD

Average snowfall days in September - The Downs, 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
The Downs, MD

Average daylight in September / Average sunshine in September - The Downs, 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 6min).

Average sunshine days in September
The Downs, MD

Average sunshine days in September - The Downs, MD
  • Average sunshine days in September: 16.4 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
The Downs, MD

Average UV index in September - The Downs, 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, November and December (UV index 2).

Average cloud cover in September
The Downs, MD

Average cloud cover in September - The Downs, 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
The Downs, MD

Average visibility in September - The Downs, 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).

The Downs, Maryland, USA

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