September weather forecast
Seneca Upland, MD

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Weather in September

The first month of the autumn, September, is still a warm month in Seneca Upland, Maryland, with temperature in the range of an average low of 58.6°F (14.8°C) and an average high of 76.5°F (24.7°C).

Temperature

As September begins, there is a minor decrease in the average high-temperature, softly falling from a warm 82.9°F (28.3°C) in August to a still moderately hot 76.5°F (24.7°C). Seneca Upland's average low-temperature in the month of September is recorded at a refreshing 58.6°F (14.8°C).

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Seneca Upland, during September, the rain falls for 14.3 days and regularly aggregates up to 2.17" (55mm) of precipitation. In Seneca Upland, during the entire year, the rain falls for 158.7 days and collects up to 30.91" (785mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Seneca Upland, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:37 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:52 pm EDT.

Sunshine

In Seneca Upland, the average sunshine in September is 9.1h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 4 during September translates into the following directions:
Make use of precautions - Suggestions to resist sunburn are communicated. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

The average high-temperature, in September, in Seneca Upland, is 76.5°F (24.7°C), while the average low-temperature is 58.6°F (14.8°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in August is appraised at 89.6°F (32°C).

What is the average humidity in September?

In Seneca Upland, the average relative humidity in September is 77%.

How many days does it rain in September?

In September, the rain falls for 14.3 days. Throughout September, 2.17" (55mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In Seneca Upland, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Seneca Upland?

In Seneca Upland, 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 6:37 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:52 pm EDT.

How many hours of sunshine does Seneca Upland have in September?

The average sunshine duration in September is 9.1h.

What is the UV index reading in September in Seneca Upland?

In Seneca Upland, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents 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
Seneca Upland, MD

Average temperature in September - Seneca Upland, MD
  • Average high temperature in September: 76.5°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 (37.8°F).

  • Average low temperature in September: 58.6°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in September
Seneca Upland, MD

Average pressure in September - Seneca Upland, MD
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
Seneca Upland, MD

Average wind speed in September - Seneca Upland, MD
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Seneca Upland, MD

Average humidity in September - Seneca Upland, MD
  • Average humidity in September: 77%

The months with the highest relative humidity are May and October (79%).
The months with the lowest relative humidity are April and July (74%).

Average rainfall in September
Seneca Upland, MD

Average rainfall in September - Seneca Upland, MD
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.93").

Average rainfall days in September
Seneca Upland, MD

Average rainfall days in September - Seneca Upland, MD
  • Average rainfall days in September: 14.3 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in September
Seneca Upland, MD

Average snowfall in September - Seneca Upland, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is March (4.09").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Seneca Upland, MD

Average snowfall days in September - Seneca Upland, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Seneca Upland, MD

Average daylight in September / Average sunshine in September - Seneca Upland, 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 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in September
Seneca Upland, MD

Average sunshine days in September - Seneca Upland, MD
  • Average sunshine days in September: 14.2 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in September
Seneca Upland, MD

Average UV index in September - Seneca Upland, MD
  • Average UV index in September: 4

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
Seneca Upland, MD

Average cloud cover in September - Seneca Upland, MD
  • Average cloud cover in September: 36

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in September
Seneca Upland, MD

Average visibility in September - Seneca Upland, MD
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Seneca Upland, Maryland, USA

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