September weather forecast
Randolph Hills, MD

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Randolph Hills, Maryland, with an average temperature ranging between min 60.8°F (16°C) and max 78.1°F (25.6°C).

Temperature

A mild shift in the average high-temperature occurs in September, reducing from 84.9°F (29.4°C) in August to a still warm 78.1°F (25.6°C). Randolph Hills's temperature in September lowers to a consistent average of 60.8°F (16°C) during the nights.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In September, the rain falls for 12.5 days. Throughout September, 2.24" (57mm) of precipitation is accumulated. Throughout the year, there are 160.9 rainfall days, and 32.99" (838mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

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

Sunshine

The average sunshine in September is 8.9h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the UV index of 5 transforms into the following advice:
Take precautions - Protection against sunburn is recommended. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

In Randolph Hills, 78.1°F (25.6°C) is the average high-temperature and 60.8°F (16°C) is the average low-temperature during September. In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 93.2°F (34°C).

What is the average humidity in September?

In Randolph Hills, the average relative humidity in September is 74%.

How many days does it rain in September?

In September, the rain falls for 12.5 days. Throughout September, 2.24" (57mm) of precipitation is accumulated.

When it does not snow?

In Randolph Hills, snow does not fall in May through October.

How many hours of daylight does Randolph Hills have in September?

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

When is the sunrise / sunset in September?

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.

How long on average sun shines in September?

The average sunshine duration in September is 8.9h.

What is the UV index intensity in September?

In September, the average daily maximum UV index in Randolph Hills is 5. A UV Index reading of 3 to 5 represents 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
Randolph Hills, MD

Average temperature in September - Randolph Hills, MD
  • Average high temperature in September: 78.1°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in September: 60.8°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure in September
Randolph Hills, MD

Average pressure in September - Randolph Hills, 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
Randolph Hills, MD

Average wind speed in September - Randolph Hills, MD
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in September
Randolph Hills, MD

Average humidity in September - Randolph Hills, MD
  • Average humidity in September: 74%

The months with the highest relative humidity are May, October and December (76%).
The month with the lowest relative humidity is July (70%).

Average rainfall in September
Randolph Hills, MD

Average rainfall in September - Randolph Hills, MD
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.17").

Average rainfall days in September
Randolph Hills, MD

Average rainfall days in September - Randolph Hills, MD
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in September
Randolph Hills, MD

Average snowfall in September - Randolph Hills, MD
  • Average snowfall in September: 0"

The months with the highest snowfall are January and March (3.03").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Randolph Hills, MD

Average snowfall days in September - Randolph Hills, MD
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (5.1 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
Randolph Hills, MD

Average daylight in September / Average sunshine in September - Randolph Hills, 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: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in September
Randolph Hills, MD

Average sunshine days in September - Randolph Hills, MD
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is November (19.4 days).
The months with the least sunshine days are May and July (11 days).

Average UV index in September
Randolph Hills, MD

Average UV index in September - Randolph Hills, 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
Randolph Hills, MD

Average cloud cover in September - Randolph Hills, MD
  • Average cloud cover in September: 37

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in September
Randolph Hills, MD

Average visibility in September - Randolph Hills, 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).

Randolph Hills, Maryland, USA

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