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 arrival of September, Garrison notices a mild change in the average high-temperature, sliding from August's moderately hot 83.1°F (28.4°C) to a still warm 76.5°F (24.7°C). During September, the nighttime temperature in Garrison averages of 59.7°F (15.4°C).Humidity
In Garrison, Maryland, the average relative humidity in September is 76%.Rainfall
In Garrison, in September, during 14.2 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, there are 167.8 rainfall days, and 34.53" (877mm) of precipitation is accumulated.Snowfall
In Garrison, snow does not fall in May through October.Daylight
The average length of the day in September in Garrison is 12h and 26min.On the first day of September, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm EDT.
Sunshine
In Garrison, the average sunshine in September is 9h.UV index
The average daily maximum UV index in September in Garrison is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a daily UV index of 5 turns into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What is the temperature in September in Garrison?
What is the average humidity in September in Garrison?
How many days does it rain in September in Garrison?
When it does not snow in Garrison?
How many hours of daylight does Garrison have in September?
What time are sunrise and sunset in September in Garrison?
How long on average sun shines in September in Garrison?
How high is the UV index in September in Garrison?
Average temperature in September
Garrison, MD
- Average high temperature in September: 76.5°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in September
Garrison, MD
- Average pressure in September: 30.06"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
Garrison, MD
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Garrison, MD
- Average humidity in September: 76%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are April and July (73%).
Average rainfall in September
Garrison, MD
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is August (4.37").
The driest months (with the least rainfall) are January and February (2.28").
Average rainfall days in September
Garrison, MD
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in September
Garrison, MD
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.39").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Garrison, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.1 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
Garrison, 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 24min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 0min).
Average sunshine days in September
Garrison, MD
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (10.2 days).
Average UV index in September
Garrison, 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
Garrison, MD
- Average cloud cover in September: 36
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Garrison, MD
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Garrison, Maryland, USA
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