Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
With the onset of September, Running Brook's climate undergoes a slight change as the average high-temperature moves from 83.8°F (28.8°C) in August to a still moderately hot 77°F (25°C). In the month of September, Running Brook witnesses a consistent average low-temperature of 60.6°F (15.9°C).Humidity
The average relative humidity in September is 75%.Rainfall
In Running Brook, in September, it is raining for 13.3 days, with typically 2.17" (55mm) of accumulated precipitation. In Running Brook, during the entire year, the rain falls for 159.3 days and collects up to 30.31" (770mm) of precipitation.Snowfall
April through October are months without snowfall in Running Brook, Maryland.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of September, in Running Brook, sunrise is at 7:03 am and sunset at 6:51 pm EDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In Running Brook, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What is the temperature in September in Running Brook?
What is the average humidity in September in Running Brook?
How many days does it rain in September in Running Brook?
When it does not snow in Running Brook?
How many hours of daylight does Running Brook have in September?
When are sunrise and sunset in September in Running Brook?
How long on average sun shines in September in Running Brook?
How high is the UV index in September in Running Brook?
Average temperature in September
Running Brook, MD
- Average high temperature in September: 77°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in September: 60.6°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in September
Running Brook, 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
Running Brook, MD
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Running Brook, MD
- Average humidity in September: 75%
The months with the highest relative humidity are May and October (77%).
The months with the lowest relative humidity are April and July (72%).
Average rainfall in September
Running Brook, MD
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in September
Running Brook, MD
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in September
Running Brook, MD
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.03").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Running Brook, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.6 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
Running Brook, 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 months with the least sunshine are January and February (Average sunshine: 5h and 6min).
Average sunshine days in September
Running Brook, MD
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11 days).
Average UV index in September
Running Brook, 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, February, November and December (UV index 2).
Average cloud cover in September
Running Brook, MD
- Average cloud cover in September: 35
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Running Brook, 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).
Running Brook, Maryland, USA
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