September weather forecast
Harris Heights, MD

Share

Weather in September

September, the first month of the autumn in Harris Heights, is also a moderately hot month, with an average temperature fluctuating between 77.2°F (25.1°C) and 62.4°F (16.9°C).

Temperature

Harris Heights's September weather features a light decline in high-temperatures, reducing from a moderately hot 83.8°F (28.8°C) in August to a still warm 77.2°F (25.1°C). The month of September records an average low-temperature of 62.4°F (16.9°C).

Humidity

In September, the average relative humidity is 75%.

Rainfall

In Harris Heights, in September, it is raining for 13.1 days, with typically 2.2" (56mm) of accumulated precipitation. In Harris Heights, during the entire year, the rain falls for 157.2 days and collects up to 30.47" (774mm) of precipitation.

Snowfall

In Harris Heights, snow does not fall in April through October.

Daylight

In Harris Heights, Maryland, 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

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, a daily UV index of 5 turns into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Frequently asked questions

What is the average September temperature in Harris Heights?

In September, the average high-temperature and low-temperature are 77.2°F (25.1°C) and 62.4°F (16.9°C) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in August is evaluated at 91.4°F (33°C).

What is the average humidity in September?

In September, the average relative humidity is 75%.

How much does it rain in September?

In Harris Heights, during September, the rain falls for 13.1 days and regularly aggregates up to 2.2" (56mm) of precipitation.

When it does not snow?

In Harris Heights, snow does not fall in April through October.

What is the average length of the day in September?

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

When are sunrise and sunset in September?

On the first day of September in Harris Heights, 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 long on average sun shines in September?

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

What is the UV index intensity in September?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Harris Heights, MD

Average temperature in September - Harris Heights, MD
  • Average high temperature in September: 77.2°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 62.4°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

Average pressure in September
Harris Heights, MD

Average pressure in September - Harris 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
Harris Heights, MD

Average wind speed in September - Harris Heights, MD
  • Average wind speed in September: 6.6mph

The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in September
Harris Heights, MD

Average humidity in September - Harris 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 March, April and July (72%).

Average rainfall in September
Harris Heights, MD

Average rainfall in September - Harris Heights, MD
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (1.81").

Average rainfall days in September
Harris Heights, MD

Average rainfall days in September - Harris Heights, MD
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and November (8.4 days).

Average snowfall in September
Harris Heights, MD

Average snowfall in September - Harris Heights, 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
Harris Heights, MD

Average snowfall days in September - Harris Heights, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.8 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
Harris Heights, MD

Average daylight in September / Average sunshine in September - Harris 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
Harris Heights, MD

Average sunshine days in September - Harris Heights, MD
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is November (19.9 days).
The months with the least sunshine days are May and July (10.8 days).

Average UV index in September
Harris Heights, MD

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

Average cloud cover in September
Harris Heights, MD

Average cloud cover in September - Harris 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
Harris Heights, MD

Average visibility in September - Harris 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).

Harris Heights, Maryland, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location