September weather forecast
Mountville, VA

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Weather in September

September, the first month of the autumn in Mountville, is still a warm month, with temperature in the range of an average low of 58.3°F (14.6°C) and an average high of 77.4°F (25.2°C).

Temperature

The arrival of September suggests a slight decrease in the average high-temperature, moving from 84.6°F (29.2°C) in August to a still moderately hot 77.4°F (25.2°C). During the nights in September, Mountville observes an average low-temperature of 58.3°F (14.6°C).

Humidity

The average relative humidity in September is 77%.

Rainfall

The month with the least rainfall is September, when the rain falls for 13.7 days and typically collects 1.93" (49mm) of precipitation.

Snowfall

In Mountville, snow does not fall in May through September.

Daylight

In Mountville, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:40 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:54 pm EDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

In Mountville, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: In September, a regular UV index of 4 translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

The average high-temperature and low-temperature during September are 77.4°F (25.2°C) and 58.3°F (14.6°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is evaluated at 93.2°F (34°C).

What is the average humidity in September in Mountville?

In Mountville, the average relative humidity in September is 77%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 13.7 days and accumulates 1.93" (49mm) of precipitation.

How many days does it rain in September?

In September, the rain falls for 13.7 days. Throughout September, 1.93" (49mm) of precipitation is accumulated.

When it does not snow?

May through September are months without snowfall.

Does it snow in September?

In Mountville, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Mountville have in September?

In Mountville, the average day length in September is 12h and 26min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:40 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:54 pm EDT.

How long on average sun shines in September?

In Mountville, the average sunshine duration in September is 8.9h.

What is the UV index reading in September?

In Mountville, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Mountville, VA

Average temperature in September - Mountville, VA
  • Average high temperature in September: 77.4°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in September: 58.3°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in September
Mountville, VA

Average pressure in September - Mountville, VA
  • Average pressure in September: 30.06"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).

Average wind speed in September
Mountville, VA

Average wind speed in September - Mountville, VA
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).

Average humidity in September
Mountville, VA

Average humidity in September - Mountville, VA
  • Average humidity in September: 77%

The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (73%).

Average rainfall in September
Mountville, VA

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

The wettest months (with the highest rainfall) are May and August (3.35").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in September
Mountville, VA

Average rainfall days in September - Mountville, VA
  • Average rainfall days in September: 13.7 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (10.1 days).

Average snowfall in September
Mountville, VA

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

The month with the highest snowfall is January (4.17").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Mountville, VA

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

The month with the highest number of snowfall days is January (6.8 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
Mountville, VA

Average daylight in September / Average sunshine in September - Mountville, VA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).

Average sunshine days in September
Mountville, VA

Average sunshine days in September - Mountville, VA
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.1 days).

Average UV index in September
Mountville, VA

Average UV index in September - Mountville, VA
  • Average UV index in September: 4

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).

Average cloud cover in September
Mountville, VA

Average cloud cover in September - Mountville, VA
  • Average cloud cover in September: 36

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in September
Mountville, VA

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

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

Mountville, Virginia, USA

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