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 sea temperature 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
As September arrives, Robin Hood Hill's weather displays a minor decrease in high-temperatures, transitioning from August's moderately hot 83.7°F (28.7°C) to a still warm 77.4°F (25.2°C). An average low-temperature of 63.3°F (17.4°C) is noted during the nights in September.Humidity
In September, the average relative humidity 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 is 74.1°F (23.4°C).Note: People sensitive to cold might find swimming in 74.1°F (23.4°C) challenging. However, conditions like sunshine, wind, and ambient temperature play a significant role in the overall comfort. Wetsuits, while optional, might be beneficial.
Daylight
In Robin Hood Hill, 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 7:01 am and sunset at 6:49 pm EDT.
Sunshine
In September, the average sunshine in Robin Hood Hill is 9.2h.UV index
In September, the average daily maximum UV index in Robin Hood Hill is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The UV index of 5 during September leads to these advisories:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
What is the water temperature in September?
How many hours of daylight does Robin Hood Hill have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
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).
Robin Hood Hill, Maryland, USA
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