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
The arrival of September suggests a slight decrease in the average high-temperature, moving from a moderately hot 82.6°F (28.1°C) in August to a still warm 75.9°F (24.4°C). During September, the temperature tends to dip to an average of 58.6°F (14.8°C) at night.Humidity
The average relative humidity in September in Gerber Knoll, Maryland, is 78%.Rainfall
In September, the rain falls for 11.4 days. Throughout September, 1.14" (29mm) of precipitation is accumulated. Throughout the year, there are 130.3 rainfall days, and 15.47" (393mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Gerber Knoll, Maryland.Daylight
In September, the average length of the day in Gerber Knoll is 12h and 26min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:51 pm EDT.
Sunshine
In September, the average sunshine in Gerber Knoll is 8.8h.UV index
In Gerber Knoll, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Exercise prevention - Precautions against solar damage are endorsed. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the average September temperature in Gerber Knoll?
What is the average humidity in September in Gerber Knoll?
How many days does it rain in September in Gerber Knoll?
When it does not snow in Gerber Knoll?
What is the average length of the day in September in Gerber Knoll?
When is the sunrise / sunset in September in Gerber Knoll?
How many hours of sunshine does Gerber Knoll have in September?
How high is the UV index in September in Gerber Knoll?
Average temperature in September
Gerber Knoll, MD
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in September
Gerber Knoll, 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
Gerber Knoll, MD
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Gerber Knoll, MD
- Average humidity in September: 78%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, April, July and November (75%).
Average rainfall in September
Gerber Knoll, MD
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is August (2.48").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in September
Gerber Knoll, MD
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is August (15.1 days).
The months with the least rainy days are January and February (6.8 days).
Average snowfall in September
Gerber Knoll, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.34").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Gerber Knoll, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.9 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
Gerber Knoll, 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: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Gerber Knoll, MD
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is May (12.9 days).
Average UV index in September
Gerber Knoll, MD
- Average UV index in September: 4
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
Gerber Knoll, MD
- Average cloud cover in September: 38
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Gerber Knoll, 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).
Gerber Knoll, Maryland, USA
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