September weather forecast
Heritage Hill, MD

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Weather in September

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

Temperature

With the onset of September, Heritage Hill's average high-temperature slightly adjusts, moderately receding from August's 83.8°F (28.8°C) to a still moderately hot 77.2°F (25.1°C). Heritage Hill temperatures generally rest at a low of 62.4°F (16.9°C) during the September nights.

Humidity

In September, the average relative humidity is 75%.

Rainfall

In September, the rain falls for 13.1 days. Throughout September, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 157.2 rainfall days, and 30.47" (774mm) of precipitation is accumulated.

Snowfall

In Heritage Hill, snow does not fall in April through October.

Daylight

In September, the average length of the day 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 7:02 am and sunset at 6:50 pm EDT.

Sunshine

In Heritage Hill, Maryland, the average sunshine in September is 9.3h.

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 ordinary individuals.
Note: During September, 5 as the daily maximum UV index converts into the following advice:
Take precautions - Protection against skin and eye damage is obliged. It's recommended to limit sun exposure when its radiation is at its peak during midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.

Frequently asked questions

What are September temperatures?

The average high-temperature, in September, in Heritage Hill, is 77.2°F (25.1°C), while the average low-temperature is 62.4°F (16.9°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 91.4°F (33°C).

What is the average humidity in September in Heritage Hill?

The average relative humidity in September is 75%.

How many days does it rain in September?

In September, the rain falls for 13.1 days. Throughout September, 2.2" (56mm) of precipitation is accumulated.

When it does not snow in Heritage Hill?

April through October are months without snowfall.

What is the average length of the day in September?

In Heritage Hill, 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 7:02 am and sunset at 6:50 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September in Heritage Hill is 9.3h.

What is the UV index reading in September?

The average daily maximum UV index in September is 5. A UV Index value 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
Heritage Hill, MD

Average temperature in September - Heritage Hill, 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
Heritage Hill, MD

Average pressure in September - Heritage Hill, 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
Heritage Hill, MD

Average wind speed in September - Heritage Hill, 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
Heritage Hill, MD

Average humidity in September - Heritage Hill, 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
Heritage Hill, MD

Average rainfall in September - Heritage Hill, 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
Heritage Hill, MD

Average rainfall days in September - Heritage Hill, 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
Heritage Hill, MD

Average snowfall in September - Heritage Hill, 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
Heritage Hill, MD

Average snowfall days in September - Heritage Hill, 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
Heritage Hill, MD

Average daylight in September / Average sunshine in September - Heritage Hill, 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
Heritage Hill, MD

Average sunshine days in September - Heritage Hill, 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
Heritage Hill, MD

Average UV index in September - Heritage Hill, 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
Heritage Hill, MD

Average cloud cover in September - Heritage Hill, 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
Heritage Hill, MD

Average visibility in September - Heritage Hill, 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).

Heritage Hill, Maryland, USA

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