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's arrival aligns with a minor decrease in average high-temperatures, from August's 81.3°F (27.4°C) to a still warm 75.4°F (24.1°C). Fort Defiance's average low-temperature during September nights is observed to be a cool 54.7°F (12.6°C).Humidity
With an average relative humidity of 79%, September is the most humid month.Rainfall
In September, in Fort Defiance, Virginia, the rain falls for 13 days. Throughout September, 1.69" (43mm) of precipitation is accumulated. In Fort Defiance, during the entire year, the rain falls for 144.6 days and collects up to 23.46" (596mm) of precipitation.Snowfall
In Fort Defiance, Virginia, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September in Fort Defiance, sunrise is at 6:46 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:59 pm EDT.
Sunshine
In Fort Defiance, Virginia, the average sunshine in September is 8.5h.UV index
In Fort Defiance, Virginia, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Guard yourself - Precautionary measures against sun damage are advocated. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What are September temperatures in Fort Defiance?
What is the most humid month in Fort Defiance?
What is the average humidity in September in Fort Defiance?
How many days does it rain in September in Fort Defiance?
When it does not snow in Fort Defiance?
Does it snow in Fort Defiance in September?
How many hours of daylight does Fort Defiance have in September?
When is the sunrise / sunset in September in Fort Defiance?
How long on average sun shines in September in Fort Defiance?
What is the UV index reading in September in Fort Defiance?
Average temperature in September
Fort Defiance, VA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in September
Fort Defiance, VA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Fort Defiance, VA
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Fort Defiance, VA
- Average humidity in September: 79%
The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is January (74%).
Average rainfall in September
Fort Defiance, VA
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in September
Fort Defiance, VA
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in September
Fort Defiance, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Fort Defiance, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Fort Defiance, VA
- Average daylight in September: 12h and 2min
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: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Fort Defiance, VA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Fort Defiance, VA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Fort Defiance, VA
- Average cloud cover in September: 40
The month with the most cloud cover is March (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 32).
Average visibility in September
Fort Defiance, VA
- Average visibility in September: 5mi
The months with the highest visibility are April, June, July and November (6mi).
The months with the lowest visibility are January, February, March, May, August, September, October and December (5mi).
Fort Defiance, Virginia, USA
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