September weather forecastMarion, VA
September
Weather in September
September, the first month of the autumn in Marion, is still a warm month, with an average temperature ranging between max 74.5°F (23.6°C) and min 52.2°F (11.2°C).Temperature
Marion sees the arrival of September with an average high-temperature of a still warm 74.5°F (23.6°C), indicating a subtle variation from August. A pronounced dip becomes evident during the nights in September as Marion logs a consistent average temperature of 52.2°F (11.2°C).Humidity
The average relative humidity in September is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 16.9 days and typically collects 1.77" (45mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 24min.On the first day of September, sunrise is at 6:57 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:10 pm EDT.
Sunshine
In September, the average sunshine is 8.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Marion, VA
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in September
Marion, VA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Marion, VA
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Marion, VA
- Average humidity in September: 80%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is November (77%).
Average rainfall in September
Marion, VA
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in September
Marion, VA
- Average rainfall days in September: 16.9 days
The month with the highest number of rainy days is July (22 days).
The month with the least rainy days is November (10.8 days).
Average snowfall in September
Marion, VA
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Marion, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Marion, VA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Marion, VA
- Average sunshine days in September: 10.2 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is May (6.7 days).
Average UV index in September
Marion, VA
- Average UV index in September: 4
The month with the highest UV index is 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
Marion, VA
- Average cloud cover in September: 43
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are June, July and August (Cloud cover 40).
Average visibility in September
Marion, VA
- 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).
