September weather forecastGeorgetown, MD
September
Weather in September
September, the first month of the autumn in Georgetown, is also a moderately hot month, with temperature in the range of an average low of 61.7°F (16.5°C) and an average high of 77°F (25°C).Temperature
Georgetown's weather subtly changes with the onset of September, barely falling from a warm 82.9°F (28.3°C) in August to a still moderately hot 77°F (25°C). Georgetown reports an average low-temperature of 61.7°F (16.5°C) during the nights of September.Humidity
In September, the average relative humidity is 77%.Rainfall
In Georgetown, during September, the rain falls for 9 days and regularly aggregates up to 0.67" (17mm) of precipitation. Throughout the year, there are 108 rainfall days, and 10.91" (277mm) of precipitation is accumulated.Snowfall
In Georgetown, snow does not fall in April through October.Daylight
In Georgetown, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:32 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:47 pm EDT.
Sunshine
In Georgetown, the average sunshine in September is 9.2h.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 exposure to the Sun's UV radiation for the ordinary person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Georgetown, MD
- Average high temperature in September: 77°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (39.2°F).
- Average low temperature in September: 61.7°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in September
Georgetown, MD
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Georgetown, MD
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Georgetown, MD
- Average humidity in September: 77%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in September
Georgetown, MD
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in September
Georgetown, MD
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is November (5.6 days).
Average snowfall in September
Georgetown, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Georgetown, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.1 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
Georgetown, MD
- Average daylight in September: 12h and 24min
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 24min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Georgetown, MD
- Average sunshine days in September: 19.3 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (15.1 days).
Average UV index in September
Georgetown, 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 and December (UV index 2).
Average cloud cover in September
Georgetown, 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
Georgetown, 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).
