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
September brings a slight decrease in temperature, down from a moderately hot 83.7°F (28.7°C) in August to a still warm 77.4°F (25.2°C). Harbour Glen witnesses an average low-temperature of 63.3°F (17.4°C) throughout the month of September.Humidity
In Harbour Glen, the average relative humidity in September is 75%.Rainfall
The month with the least rainfall in Harbour Glen, Maryland, is September, when the rain falls for 11.8 days and typically collects 1.89" (48mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Harbour Glen, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:49 pm EDT.
Sunshine
The average sunshine in September in Harbour Glen is 9.2h.UV index
In Harbour Glen, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 suggests this advice:
Undertake protective steps - Preventing sun damage is advised. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
What are the temperatures in Harbour Glen in September?
What is the average humidity in September in Harbour Glen?
What is the driest month in Harbour Glen?
How much does it rain in Harbour Glen in September?
When it does not snow in Harbour Glen?
How many hours of daylight does Harbour Glen have in September?
When are sunrise and sunset in September in Harbour Glen?
How long on average sun shines in September in Harbour Glen?
What is the UV index intensity in September in Harbour Glen?
Average temperature in September
Harbour Glen, 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
Harbour Glen, 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
Harbour Glen, 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
Harbour Glen, 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
Harbour Glen, 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
Harbour Glen, 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
Harbour Glen, 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
Harbour Glen, 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 daylight in September /
Average sunshine in September
Harbour Glen, 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
Harbour Glen, 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
Harbour Glen, 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
Harbour Glen, 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
Harbour Glen, 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).
Harbour Glen, Maryland, USA
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