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 advent of September brings a slight shift in average high-temperature, moving from a moderately hot 85.1°F (29.5°C) in August to a still warm 78.6°F (25.9°C). Nighttime temperatures consistently average a comfortable 61.9°F (16.6°C) during September.Humidity
In Bel Alton, the average relative humidity in September is 77%.Rainfall
In September, the rain falls for 12.1 days. Throughout September, 2.05" (52mm) of precipitation is accumulated. In Bel Alton, during the entire year, the rain falls for 151.4 days and collects up to 29.33" (745mm) of precipitation.Snowfall
In Bel Alton, snow does not fall in May through October.Daylight
The average length of the day in September in Bel Alton is 12h and 25min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:37 pm. On the last day of September, in Bel Alton, sunrise is at 7:03 am and sunset at 6:51 pm EDT.
Sunshine
In September, the average sunshine in Bel Alton, Maryland, is 8.7h.UV index
The average daily maximum UV index in September in Bel Alton is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 5 in September leads to these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What are the temperatures in Bel Alton in September?
What is the average humidity in September in Bel Alton?
How many days does it rain in September in Bel Alton?
When it does not snow in Bel Alton?
How many hours of daylight does Bel Alton have in September?
When are sunrise and sunset in September in Bel Alton?
How long on average sun shines in September in Bel Alton?
What is the UV index reading in September in Bel Alton?
Average temperature in September
Bel Alton, MD
- Average high temperature in September: 78.6°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in September
Bel Alton, 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 (29.95"Hg).
Average wind speed in September
Bel Alton, MD
- Average wind speed in September: 5.8mph
The windiest months (with the highest average wind speed) are March and April (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Bel Alton, MD
- Average humidity in September: 77%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March and April (73%).
Average rainfall in September
Bel Alton, MD
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in September
Bel Alton, MD
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in September
Bel Alton, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Bel Alton, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.3 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
Bel Alton, MD
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).
Average sunshine days in September
Bel Alton, MD
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11.4 days).
Average UV index in September
Bel Alton, 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 and December (UV index 2).
Average cloud cover in September
Bel Alton, MD
- Average cloud cover in September: 38
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Bel Alton, 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).
Bel Alton, Maryland, USA
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