September weather forecast
Sweetser Heights, MD

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Weather in September

The first month of the autumn, September, is still a warm month in Sweetser Heights, Maryland, with an average temperature ranging between max 77.2°F (25.1°C) and min 62.2°F (16.8°C).

Temperature

In Sweetser Heights, entering September brings a subtle temperature decrement, reducing from August's 83.8°F (28.8°C) to a still warm 77.2°F (25.1°C). Throughout the nights in September, an average low-temperature of 62.2°F (16.8°C) is noted.

Humidity

The average relative humidity in September is 75%.

Rainfall

In Sweetser Heights, in September, during 13.1 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, there are 156.3 rainfall days, and 29.61" (752mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in September 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 6:50 pm EDT.

Sunshine

The average sunshine in September is 9.3h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 5 during September translates into these guidelines:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

Frequently asked questions

What is the average September temperature?

The high-temperature, in September, in Sweetser Heights, records 77.2°F (25.1°C), while the low-temperature is 62.2°F (16.8°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 91.4°F (33°C).

What is the average humidity in September?

In Sweetser Heights, the average relative humidity in September is 75%.

How much does it rain in September?

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

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

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 6:50 pm EDT.

How many hours of sunshine does Sweetser Heights have in September?

In Sweetser Heights, the average sunshine duration in September is 9.3h.

What is the UV index reading in September?

In Sweetser Heights, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe 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
Sweetser Heights, MD

Average temperature in September - Sweetser Heights, 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).

Average pressure in September
Sweetser Heights, MD

Average pressure in September - Sweetser Heights, 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
Sweetser Heights, MD

Average wind speed in September - Sweetser Heights, 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).

Average humidity in September
Sweetser Heights, MD

Average humidity in September - Sweetser Heights, 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%).

Average rainfall in September
Sweetser Heights, MD

Average rainfall in September - Sweetser Heights, 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").

Average rainfall days in September
Sweetser Heights, MD

Average rainfall days in September - Sweetser Heights, 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).

Average snowfall in September
Sweetser Heights, MD

Average snowfall in September - Sweetser Heights, 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").

Average snowfall days in September
Sweetser Heights, MD

Average snowfall days in September - Sweetser Heights, 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).

Average daylight in September /
Average sunshine in September
Sweetser Heights, MD

Average daylight in September / Average sunshine in September - Sweetser Heights, 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).

Average sunshine days in September
Sweetser Heights, MD

Average sunshine days in September - Sweetser Heights, 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).

Average UV index in September
Sweetser Heights, MD

Average UV index in September - Sweetser Heights, 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
Sweetser Heights, MD

Average cloud cover in September - Sweetser Heights, 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).

Average visibility in September
Sweetser Heights, MD

Average visibility in September - Sweetser Heights, 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).

Sweetser Heights, Maryland, USA

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