September weather forecast
Wiley, VA

Share

Weather in September

September, the first month of the autumn in Wiley, is also a moderately hot month, with an average temperature ranging between min 61.3°F (16.3°C) and max 79°F (26.1°C).

Temperature

In Wiley, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's hot 86°F (30°C) to a warm 79°F (26.1°C). September brings an average low-temperature of 61.3°F (16.3°C) to Wiley.

Humidity

In September, the average relative humidity is 76%.

Rainfall

In September, the rain falls for 12.6 days. Throughout September, 2.13" (54mm) of precipitation is accumulated. In Wiley, Virginia, during the entire year, the rain falls for 164.3 days and collects up to 32.32" (821mm) of precipitation.

Snowfall

May through November are months without snowfall.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 6:38 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:52 pm EDT.

Sunshine

In Wiley, the average sunshine in September is 8.9h.

UV index

In Wiley, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Take precautions - Protection against sunburn is recommended. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

In Wiley, 79°F (26.1°C) is the average high-temperature and 61.3°F (16.3°C) is the average low-temperature during September. In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 96.8°F (36°C).

What is the average humidity in September?

In September, the average relative humidity is 76%.

How much does it rain in September?

In September, the rain falls for 12.6 days. Throughout September, 2.13" (54mm) of precipitation is accumulated.

When it does not snow?

In Wiley, snow does not fall in May through November.

What is the average length of the day in September?

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 6:38 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:52 pm EDT.

How many hours of sunshine does Wiley have in September?

In September, the average sunshine duration is 8.9h.

How high is the UV index in September?

In September, the average daily maximum UV index is 5. A UV Index value 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
Wiley, VA

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

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in September: 61.3°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in September
Wiley, VA

Average pressure in September - Wiley, 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).

Average wind speed in September
Wiley, VA

Average wind speed in September - Wiley, VA
  • Average wind speed in September: 5.3mph

The windiest months (with the highest average wind speed) are March and April (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in September
Wiley, VA

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

The months with the highest relative humidity are May, October and December (77%).
The months with the lowest relative humidity are April and July (72%).

Average rainfall in September
Wiley, VA

Average rainfall in September - Wiley, VA
  • Average rainfall in September: 2.13"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.01").

Average rainfall days in September
Wiley, VA

Average rainfall days in September - Wiley, VA
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is November (9.1 days).

Average snowfall in September
Wiley, VA

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

The month with the highest snowfall is January (2.44").
The months with the least snowfall are May, June, July, August, September, October and November (0").

Average snowfall days in September
Wiley, VA

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

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Wiley, 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 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 February and December (Average sunshine: 5h and 12min).

Average sunshine days in September
Wiley, VA

Average sunshine days in September - Wiley, VA
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (10.6 days).

Average UV index in September
Wiley, VA

Average UV index in September - Wiley, 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, November and December (UV index 2).

Average cloud cover in September
Wiley, VA

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

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in September
Wiley, VA

Average visibility in September - Wiley, VA
  • Average visibility in September: 6mi

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

Wiley, Virginia, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location