September weather forecast
Gainesville, VA

Weather in September

September, the first month of the autumn in Gainesville, is also a moderately hot month, with an average temperature ranging between min 59.7°F (15.4°C) and max 79°F (26.1°C).

Temperature

In Gainesville, the average high-temperature in September marginally drops from a warm 85.8°F (29.9°C) in August to a still moderately hot 79°F (26.1°C). In Gainesville, in September, the average low-temperature is 59.7°F (15.4°C).

Humidity

In September, the average relative humidity is 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12.7 days and typically collects 1.93" (49mm) of precipitation.

Snowfall

May through October are months without snowfall in Gainesville.

Daylight

The average length of the day in September in Gainesville is 12h and 26min.
On the first day of September, sunrise is at 6:39 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:55 pm EDT.

Sunshine

The average sunshine in September in Gainesville is 8.7h.

UV index

In Gainesville, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in September in Gainesville?

The average relative humidity in September in Gainesville, Virginia, is 76%.

What is the driest month in Gainesville?

September is the month with the least rainfall in Gainesville, Virginia. Rain falls for 12.7 days and accumulates 1.93" (49mm) of precipitation.

How many days does it rain in September in Gainesville?

In Gainesville, Virginia, in September, it is raining for 12.7 days, with typically 1.93" (49mm) of accumulated precipitation.

When it does not snow in Gainesville?

In Gainesville, Virginia, snow does not fall in May through October.

What is the average length of the day in September in Gainesville?

The average day length in September in Gainesville, Virginia, is 12h and 26min.

What time are sunrise and sunset in September in Gainesville?

On the first day of September in Gainesville, Virginia, sunrise is at 6:39 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:55 pm EDT.

How long on average sun shines in September in Gainesville?

The average sunshine duration in September in Gainesville, Virginia, is 8.7h.

How high is the UV index in September in Gainesville?

In September, the average daily maximum UV index in Gainesville, Virginia, is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Gainesville, VA

Average temperature in September - Gainesville, VA
  • Average high temperature in September: 79°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in September: 59.7°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).

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Average pressure in September
Gainesville, VA

Average pressure in September - Gainesville, VA
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in September
Gainesville, VA

Average wind speed in September - Gainesville, VA
  • Average wind speed in September: 5.1mph

The windiest months (with the highest average wind speed) are March and April (7mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

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Average humidity in September
Gainesville, VA

Average humidity in September - Gainesville, VA
  • Average humidity in September: 76%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (72%).

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Average rainfall in September
Gainesville, VA

Average rainfall in September - Gainesville, VA
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in September
Gainesville, VA

Average rainfall days in September - Gainesville, VA
  • Average rainfall days in September: 12.7 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in September
Gainesville, VA

Average snowfall in September - Gainesville, VA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Gainesville, VA

Average snowfall days in September - Gainesville, VA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Gainesville, VA

Average daylight in September / Average sunshine in September - Gainesville, VA
  • Average daylight in September: 12h and 26min

The month with the longest days is June (Average daylight: 14h and 50min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 8.7h

The month with the most sunshine is July (Average sunshine: 10.7h).
The months with the least sunshine are January, February and December (Average sunshine: 5.2).

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Average sunshine days in September
Gainesville, VA

Average sunshine days in September - Gainesville, VA
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.7 days).

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Average UV index in September
Gainesville, VA

Average UV index in September - Gainesville, VA
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Gainesville, VA

Average cloud cover in September - Gainesville, VA
  • Average cloud cover in September: 38

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in September
Gainesville, VA

Average visibility in September - Gainesville, VA
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, March, April, June, July, August and November (6mi).
The months with the lowest visibility are May, September, October and December (5mi).

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