September weather forecastBloomington, MD
September
Weather in September
The first month of the autumn, September, is still a warm month in Bloomington, Maryland, with temperature in the range of an average high of 73.4°F (23°C) and an average low of 52.3°F (11.3°C).Temperature
Bloomington in September undergoes a slight reduction in the average high-temperature, shifting from August's warm 80.4°F (26.9°C) to a still moderately hot 73.4°F (23°C). In Bloomington, the average low-temperature during the month of September is a cool 52.3°F (11.3°C).Humidity
In Bloomington, the average relative humidity in September is 79%.Rainfall
In Bloomington, in September, it is raining for 13.9 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, there are 184.1 rainfall days, and 30.75" (781mm) of precipitation is accumulated.Snowfall
In Bloomington, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:59 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. To protect against the Sun's most potent rays, avoid direct exposure around midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bloomington, MD
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Bloomington, 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 (29.95"Hg).
Average wind speed in September
Bloomington, MD
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
Bloomington, MD
- Average humidity in September: 79%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April, June and July (76%).
Average rainfall in September
Bloomington, MD
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is November (1.89").
Average rainfall days in September
Bloomington, MD
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is November (11.8 days).
Average snowfall in September
Bloomington, MD
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.84").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Bloomington, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bloomington, 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 24min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Bloomington, MD
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is November (15 days).
The month with the least sunshine days is May (8.5 days).
Average UV index in September
Bloomington, MD
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Bloomington, MD
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Bloomington, MD
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
