September weather forecast
Indian Head, MD

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Weather in September

September, the first month of the autumn in Indian Head, is still a warm month, with an average temperature varying between 61.3°F (16.3°C) and 79°F (26.1°C).

Temperature

Indian Head's September weather shows a modest shift in high-temperatures, falling from August's hot 86°F (30°C) to a warm 79°F (26.1°C). Throughout the month of September, Indian Head observes an average nighttime temperature of 61.3°F (16.3°C).

Humidity

The average relative humidity in September is 76%.

Rainfall

In Indian Head, in September, it is raining for 12.6 days, with typically 2.13" (54mm) of accumulated precipitation. In Indian Head, during the entire year, the rain falls for 164.3 days and collects up to 32.32" (821mm) of precipitation.

Snowfall

May through November are months without snowfall in Indian Head.

Daylight

The average length of the day in September in Indian Head is 12h and 26min.
On the first day of September, sunrise is at 6:38 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 September, the average sunshine is 8.9h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: An average maximum UV index of 5 in September leads to these recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

During September, Indian Head experiences an average high-temperature of 79°F (26.1°C) and a low-temperature of 61.3°F (16.3°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 96.8°F (36°C).

What is the average humidity in September?

In Indian Head, the average relative humidity in September is 76%.

How much does it rain in September?

In September, the rain falls for 12.6 days. Throughout September, 2.13" (54mm) of precipitation is accumulated.

When it does not snow?

May through November are months without snowfall.

How many hours of daylight does Indian Head have in September?

The average day length in September is 12h and 26min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:38 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 long on average sun shines in September?

In Indian Head, the average sunshine duration in September is 8.9h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's 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
Indian Head, MD

Average temperature in September - Indian Head, MD
  • Average high temperature in September: 79°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in September: 61.3°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in September
Indian Head, MD

Average pressure in September - Indian Head, 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 (29.95"Hg).

Average wind speed in September
Indian Head, MD

Average wind speed in September - Indian Head, MD
  • Average wind speed in September: 5.3mph

The windiest months (with the highest average wind speed) are March and April (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in September
Indian Head, MD

Average humidity in September - Indian Head, MD
  • Average humidity in September: 76%

The months with the highest relative humidity are May, October and December (77%).
The months with the lowest relative humidity are April and July (72%).

Average rainfall in September
Indian Head, MD

Average rainfall in September - Indian Head, MD
  • Average rainfall in September: 2.13"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.01").

Average rainfall days in September
Indian Head, MD

Average rainfall days in September - Indian Head, MD
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is November (9.1 days).

Average snowfall in September
Indian Head, MD

Average snowfall in September - Indian Head, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.44").
The months with the least snowfall are May, June, July, August, September, October and November (0").

Average snowfall days in September
Indian Head, MD

Average snowfall days in September - Indian Head, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.8 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
Indian Head, MD

Average daylight in September / Average sunshine in September - Indian Head, MD
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).

Average sunshine days in September
Indian Head, MD

Average sunshine days in September - Indian Head, MD
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (10.6 days).

Average UV index in September
Indian Head, MD

Average UV index in September - Indian Head, 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
Indian Head, MD

Average cloud cover in September - Indian Head, MD
  • Average cloud cover in September: 36

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in September
Indian Head, MD

Average visibility in September - Indian Head, 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).

Indian Head, Maryland, USA

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