September weather forecastClifton Forge, VA
September
Weather in September
The first month of the autumn, September, is still a warm month in Clifton Forge, Virginia, with an average temperature ranging between min 53.6°F (12°C) and max 75.9°F (24.4°C).Temperature
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from 82.4°F (28°C) to a still warm 75.9°F (24.4°C). September witnesses a substantial contrast between the daytime highs and the average low of 53.6°F (12°C).Humidity
May, September and December, with an average relative humidity of 79%, are the most humid months.Rainfall
September is the month with the least rainfall. Rain falls for 12 days and accumulates 1.22" (31mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:14 am and sunset at 7:03 pm EDT.
Sunshine
In September, the average sunshine in Clifton Forge is 8.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Clifton Forge, VA
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in September
Clifton Forge, 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 (29.97"Hg).
Average wind speed in September
Clifton Forge, VA
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in September
Clifton Forge, VA
- Average humidity in September: 79%
The months with the highest relative humidity are May, September and December (79%).
The month with the lowest relative humidity is July (75%).
Average rainfall in September
Clifton Forge, VA
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in September
Clifton Forge, VA
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (8.2 days).
Average snowfall in September
Clifton Forge, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.87").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Clifton Forge, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Clifton Forge, VA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 30min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Clifton Forge, VA
- Average sunshine days in September: 16 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in September
Clifton Forge, VA
- Average UV index in September: 4
The months with the highest UV index are June and 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
Clifton Forge, VA
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are June and July (Cloud cover 33).
Average visibility in September
Clifton Forge, VA
- Average visibility in September: 4mi
The month with the highest visibility is November (6mi).
The months with the lowest visibility are May and September (4mi).
