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
September signals a slight drop in average high-temperature, sliding from August's 81.7°F (27.6°C) to a still moderately hot 76.1°F (24.5°C). Keen Mountain, in September, experiences a marked contrast from daytime zeniths to a steady average low-temperature of 53.6°F (12°C).Humidity
The average relative humidity in September is 78%.Rainfall
The month with the least rainfall in Keen Mountain is September, when the rain falls for 13.2 days and typically collects 1.14" (29mm) of precipitation.Snowfall
In Keen Mountain, snow does not fall in June through September.Daylight
In September, the average length of the day in Keen Mountain, Virginia, is 12h and 25min.On the first day of September in Keen Mountain, sunrise is at 6:59 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:12 pm EDT.
Sunshine
In Keen Mountain, Virginia, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What is the usual temperature for Keen Mountain in September?
What is the average humidity in September in Keen Mountain?
What is the driest month in Keen Mountain?
How much does it rain in Keen Mountain in September?
When it does not snow in Keen Mountain?
Does it snow in Keen Mountain in September?
How many hours of daylight does Keen Mountain have in September?
When is the sunrise / sunset in September in Keen Mountain?
How long on average sun shines in September in Keen Mountain?
What is the UV index reading in September in Keen Mountain?
Average temperature in September
Keen Mountain, VA
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in September
Keen Mountain, 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
Keen Mountain, VA
- Average wind speed in September: 4.5mph
The windiest months (with the highest average wind speed) are January, February and April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Keen Mountain, VA
- Average humidity in September: 78%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Keen Mountain, VA
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is February (2.72").
The driest month (with the least rainfall) is September (1.14").
Average rainfall days in September
Keen Mountain, VA
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in September
Keen Mountain, VA
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Keen Mountain, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Keen Mountain, VA
- Average daylight in September: 12h and 2min
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 42min).
- Average sunshine in September: 8h and 2min
The months with the most sunshine are June, July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Keen Mountain, VA
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in September
Keen Mountain, VA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Keen Mountain, VA
- Average cloud cover in September: 39
The months with the most cloud cover are January and February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Keen Mountain, VA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Keen Mountain, Virginia, USA
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