September weather forecastUpper Fairmount, MD
September
Weather in September
September, the first month of the autumn in Upper Fairmount, is still a warm month, with temperature in the range of an average low of 68.9°F (20.5°C) and an average high of 76.3°F (24.6°C).Temperature
A minor decrease in the average high-temperature is observed during September, shifting from a warm 81.9°F (27.7°C) in August to a still moderately hot 76.3°F (24.6°C). Upper Fairmount encounters a negligible difference from daytime peaks throughout the September nights, with a low-temperature average of 68.9°F (20.5°C).Humidity
The average relative humidity in September is 76%.Rainfall
In Upper Fairmount, in September, it is raining for 14.2 days, with typically 2.72" (69mm) of accumulated precipitation. In Upper Fairmount, during the entire year, the rain falls for 158.7 days and collects up to 32.72" (831mm) of precipitation.Snowfall
In Upper Fairmount, Maryland, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:32 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:47 pm EDT.
Sunshine
The average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. The Sun's radiation is especially intense around midday; try to stay in shade during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Upper Fairmount, MD
- Average high temperature in September: 76.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (42.4°F).
- Average low temperature in September: 68.9°F
The month with the highest average low temperature is July (74.7°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in September
Upper Fairmount, MD
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Upper Fairmount, MD
- Average wind speed in September: 10mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in September
Upper Fairmount, MD
- Average humidity in September: 76%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in September
Upper Fairmount, MD
- Average rainfall in September: 2.72"
The wettest month (with the highest rainfall) is August (4.17").
The driest month (with the least rainfall) is January (1.93").
Average rainfall days in September
Upper Fairmount, MD
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Upper Fairmount, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Upper Fairmount, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.9 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
Upper Fairmount, MD
- Average daylight in September: 12h and 24min
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 36min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Upper Fairmount, MD
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is August (11.2 days).
Average UV index in September
Upper Fairmount, MD
- Average UV index in September: 5
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Upper Fairmount, MD
- Average cloud cover in September: 32
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Upper Fairmount, 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).
