September weather forecastGreen Meadows, MD
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Green Meadows, Maryland, with an average temperature varying between 65.5°F (18.6°C) and 76.8°F (24.9°C).Temperature
The transition into September involves a small decrease in the average high-temperature, dipping slightly from 82.6°F (28.1°C) in August to a still warm 76.8°F (24.9°C). Green Meadows, in September, observes a steady average low-temperature of 65.5°F (18.6°C).Humidity
The average relative humidity in September is 76%.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 1.22" (31mm) of precipitation is accumulated. Throughout the year, there are 132.6 rainfall days, and 14.8" (376mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In Green Meadows, Maryland, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:37 am and sunset at 7:37 pm. On the last day of the month, 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 Green Meadows, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 during September translates into the following directions:
Undertake precautions - It is suggested to shield oneself from sunburn. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Green Meadows, MD
- Average high temperature in September: 76.8°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (40.8°F).
- Average low temperature in September: 65.5°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in September
Green Meadows, 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
Green Meadows, MD
- Average wind speed in September: 7.9mph
The windiest months (with the highest average wind speed) are January and March (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in September
Green Meadows, MD
- Average humidity in September: 76%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and November (72%).
Average rainfall in September
Green Meadows, MD
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is August (2.52").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Green Meadows, MD
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is August (15.9 days).
The month with the least rainy days is November (6.4 days).
Average snowfall in September
Green Meadows, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Green Meadows, MD
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Green Meadows, 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 30min).
- Average sunshine in September: 9h and 6min
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 6min).
Average sunshine days in September
Green Meadows, MD
- Average sunshine days in September: 16 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is July (12.6 days).
Average UV index in September
Green Meadows, 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
Green Meadows, 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 28).
Average visibility in September
Green Meadows, 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).
