September weather forecast
Robin Hood Hill, MD

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Weather in September

The first month of the autumn, September, is still a warm month in Robin Hood Hill, Maryland, with an average temperature fluctuating between 63.3°F (17.4°C) and 77.4°F (25.2°C).

Temperature

September brings a slight decrease in the average high-temperature, shifting from 83.7°F (28.7°C) in August to a still warm 77.4°F (25.2°C). In the month of September, Robin Hood Hill experiences an average low-temperature of 63.3°F (17.4°C).

Humidity

In Robin Hood Hill, the average relative humidity in September is 75%.

Rainfall

The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.89" (48mm) of precipitation.

Snowfall

In Robin Hood Hill, snow does not fall in May through October.

Ocean temperature

In September, the average ocean temperature in Robin Hood Hill is 74.1°F (23.4°C).
Note: For those not fond of cold temperatures, taking a swim at 74.1°F (23.4°C) may require consideration of the sunshine, wind, and ambient temperature. While wetsuits are not mandatory, they can enhance the experience.

Daylight

In September, the average length of the day in Robin Hood Hill 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 7:01 am and sunset at 6:49 pm EDT.

Sunshine

In September, the average sunshine is 9.2h.

UV index

In September, the average daily maximum UV index in Robin Hood Hill, Maryland, is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 5 during September leads to these instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.
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Frequently asked questions

What are September temperatures in Robin Hood Hill?

September temperatures vary between a high-temperature of 77.4°F (25.2°C) and a low-temperature of 63.3°F (17.4°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, in August is calculated to be 91.4°F (33°C).

What is the average humidity in September in Robin Hood Hill?

In September, the average relative humidity in Robin Hood Hill is 75%.

What is the driest month in Robin Hood Hill?

The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.89" (48mm) of precipitation.

How many days does it rain in September in Robin Hood Hill?

In Robin Hood Hill, Maryland, during September, the rain falls for 11.8 days and regularly aggregates up to 1.89" (48mm) of precipitation.

When it does not snow in Robin Hood Hill?

May through October are months without snowfall in Robin Hood Hill.

How warm is the water in September in Robin Hood Hill?

In Robin Hood Hill, in September, the average water temperature is 74.1°F (23.4°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 74.1°F (23.4°C) water may be enjoyable.

What is the average length of the day in September in Robin Hood Hill?

In September, the average day length in Robin Hood Hill is 12h and 26min.

When are sunrise and sunset in September in Robin Hood Hill?

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 7:01 am and sunset at 6:49 pm EDT.

How long on average sun shines in September in Robin Hood Hill?

In September, the average sunshine duration in Robin Hood Hill is 9.2h.

What is the UV index reading in September in Robin Hood Hill?

The average daily maximum UV index in September in Robin Hood Hill is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASeptemberOND
Aug
September
Oct
Average high temperature
83.7°F 28.7°C
77.4°F 25.2°C
65.5°F 18.6°C
Average low temperature
69.1°F 20.6°C
63.3°F 17.4°C
52.9°F 11.6°C
Average pressure
29.99" 762mmHg
30.05" 763mmHg
30.03" 763mmHg
Average wind speed
6mph 9.7km/h
7mph 11.3km/h
8.1mph 13km/h
Average max. wind speed
6.6mph 10.6km/h
7.2mph 11.6km/h
8.8mph 14.2km/h
Average wind speed gusts
9.3mph 15km/h
10.6mph 17.1km/h
13.1mph 21.1km/h
Average humidity
73%
75%
75%
Average rainfall
3.54" 90mm
1.89" 48mm
2.64" 67mm
Average rainfall days
13.9
11.8
11.3
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average sea temperature
78°F 25.6°C
74.2°F 23.4°C
67.2°F 19.6°C
Average daylight
13h 4min
12h 2min
11h 1min
Average sunshine
10h 2min
9h 1min
5h 4min
Average sunshine days
15.3
16.4
17.5
Average UV index
6
5
4
Average cloud cover
30%
34%
37%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in September
Robin Hood Hill, MD

Average temperature in September - Robin Hood Hill, MD
  • Average high temperature in September: 77.4°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in September: 63.3°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in September
Robin Hood Hill, MD

Average pressure in September - Robin Hood 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).

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Average wind speed in September
Robin Hood Hill, MD

Average wind speed in September - Robin Hood Hill, MD
  • Average wind speed in September: 7mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity in September
Robin Hood Hill, MD

Average humidity in September - Robin Hood Hill, MD
  • Average humidity in September: 75%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).

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Average rainfall in September
Robin Hood Hill, MD

Average rainfall in September - Robin Hood Hill, MD
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in September
Robin Hood Hill, MD

Average rainfall days in September - Robin Hood Hill, MD
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).

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Average snowfall in September
Robin Hood Hill, MD

Average snowfall in September - Robin Hood Hill, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Robin Hood Hill, MD

Average snowfall days in September - Robin Hood Hill, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in September
Robin Hood Hill, MD

Average sea temperature in September - Robin Hood Hill, MD
  • Average sea temperature in September: 74.2°F

The best month for swimming (with the highest average sea temperature) is August (78°F).
The coldest month (with the lowest average sea temperature) is February (45.9°F).

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Average daylight in September /
Average sunshine in September
Robin Hood Hill, MD

Average daylight in September / Average sunshine in September - Robin Hood 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 1min

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).

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Average sunshine days in September
Robin Hood Hill, MD

Average sunshine days in September - Robin Hood Hill, MD
  • Average sunshine days in September: 16.4 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in September
Robin Hood Hill, MD

Average UV index in September - Robin Hood 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).

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Average cloud cover in September
Robin Hood Hill, MD

Average cloud cover in September - Robin Hood Hill, MD
  • Average cloud cover in September: 34

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in September
Robin Hood Hill, MD

Average visibility in September - Robin Hood 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).

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Robin Hood Hill, Maryland, USA

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