September weather forecast
Santiago, WV

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Weather in September

The first month of the autumn, September, is still a warm month in Santiago, West Virginia, with temperature in the range of an average low of 54.7°F (12.6°C) and an average high of 76.1°F (24.5°C).

Temperature

September brings a slight decrease in temperature, down from 81.7°F (27.6°C) in August to a still moderately hot 76.1°F (24.5°C). The average temperature in Santiago drops to a fresh 54.7°F (12.6°C) during the night in the month of September.

Humidity

In Santiago, West Virginia, the average relative humidity in September is 78%.

Rainfall

September and November are months with the least rain when the rain falls for 15.8 days and typically aggregates up to 2.2" (56mm) of rain.

Snowfall

June through September are months without snowfall in Santiago.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:49 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:04 pm EDT.

Sunshine

The average sunshine in September is 8.8h.

UV index

In September, the average daily maximum UV index is 4. 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 daily high UV index of 4 in September translates into this advice:
Be vigilant - Suggestions to stave off sun damage are provided. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Santiago?

The high-temperature, in September, in Santiago, records 76.1°F (24.5°C), while the low-temperature is 54.7°F (12.6°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 87.8°F (31°C).

What is the average humidity in September in Santiago?

In September, the average relative humidity in Santiago is 78%.

What is the driest month in Santiago?

The months with the least rainfall are September and November Rain falls for 15.8 days and accumulates 2.2" (56mm) of rain.

How much does it rain in Santiago in September?

In Santiago, during September, the rain falls for 15.8 days and regularly aggregates up to 2.2" (56mm) of precipitation.

When it does not snow in Santiago?

June through September are months without snowfall.

Does it snow in Santiago in September?

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

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

The average day length in September in Santiago is 12h and 26min.

What time are sunrise and sunset in September in Santiago?

In September, on the first day of the month, sunrise is at 6:49 am and sunset at 7:51 pm. On the last day of the month, in Santiago, West Virginia, sunrise is at 7:16 am and sunset at 7:04 pm EDT.

How many hours of sunshine does Santiago have in September?

The average sunshine duration in September in Santiago is 8.8h.

What is the UV index reading in September in Santiago?

In Santiago, West Virginia, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Santiago, WV

Average temperature in September - Santiago, WV
  • Average high temperature in September: 76.1°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in September: 54.7°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in September
Santiago, WV

Average pressure in September - Santiago, WV
  • 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
Santiago, WV

Average wind speed in September - Santiago, WV
  • Average wind speed in September: 4.5mph

The windiest months (with the highest average wind speed) are January and February (7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

Average humidity in September
Santiago, WV

Average humidity in September - Santiago, WV
  • Average humidity in September: 78%

The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are August and November (77%).

Average rainfall in September
Santiago, WV

Average rainfall in September - Santiago, WV
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are September and November (2.2").

Average rainfall days in September
Santiago, WV

Average rainfall days in September - Santiago, WV
  • Average rainfall days in September: 15.8 days

The month with the highest number of rainy days is May (21.8 days).
The month with the least rainy days is February (10.8 days).

Average snowfall in September
Santiago, WV

Average snowfall in September - Santiago, WV
  • Average snowfall in September: 0"

The month with the highest snowfall is February (6.73").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Santiago, WV

Average snowfall days in September - Santiago, WV
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Santiago, WV

Average daylight in September / Average sunshine in September - Santiago, WV
  • 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 24min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

Average sunshine days in September
Santiago, WV

Average sunshine days in September - Santiago, WV
  • Average sunshine days in September: 11.5 days

The month with the most sunshine days is November (14.7 days).
The month with the least sunshine days is May (7.7 days).

Average UV index in September
Santiago, WV

Average UV index in September - Santiago, WV
  • Average UV index in September: 4

The months with the highest UV index are May, 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
Santiago, WV

Average cloud cover in September - Santiago, WV
  • Average cloud cover in September: 37

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in September
Santiago, WV

Average visibility in September - Santiago, WV
  • Average visibility in September: 5mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is January (4mi).

Santiago, West Virginia, USA

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