September weather forecast
Amarillo, TX

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Street lights shine bright in the night with a view of the scenic full moon up in Amarillo, Texas
Street lights shine bright in the night with a view of the scenic full moon up in Amarillo, Texas

Weather in September

September in Amarillo marks the gradual farewell to the dominant summer heat and welcomes the onset of the fall season. The adjustment from summer to fall is gentle with a slight drop in temperatures. This month experiences 1.18" (30mm) of rainfall, seemingly creating a softer transition between the seasons. With fall's arrival come shorter daylight hours and a subtle shift in the color of the city's foliage. Essentially, September denotes a climatic change towards a milder and more comfortable environment.

Temperature

September's arrival signals a moderate reduction in the average high-temperature, easing from a tropical 91.8°F (33.2°C) in August to a moderately hot 83.3°F (28.5°C). Amarillo usually reports an average low-temperature of 62.8°F (17.1°C) during the month of September.

Heat index

The average heat index in September is calculated to be 84.2°F (29°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

In September, the average relative humidity is 53%.

Rainfall

In September, the rain falls for 10.4 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. In Amarillo, during the entire year, the rain falls for 80.4 days and collects up to 9.76" (248mm) of precipitation.

Snowfall

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

Daylight

In Amarillo, the average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 7:20 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:32 pm CDT.

Sunshine

The average sunshine in September is 9.3h.

UV index

In Amarillo, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 6 in September transforms into the following instructions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

How hot is it in Amarillo in September?

The average high-temperature, in September, in Amarillo, is 83.3°F (28.5°C), while the average low-temperature is 62.8°F (17.1°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 84.2°F (29°C).

What is the average humidity in September in Amarillo?

In Amarillo, Texas, the average relative humidity in September is 53%.

How many days does it rain in September in Amarillo?

In September, in Amarillo, Texas, the rain falls for 10.4 days. Throughout September, 1.18" (30mm) of precipitation is accumulated.

When it does not snow in Amarillo?

In Amarillo, Texas, snow does not fall in May through September.

Does it snow in Amarillo in September?

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

How many hours of daylight does Amarillo have in September?

The average day length in September is 12h and 23min.

What time are sunrise and sunset in September in Amarillo?

On the first day of September in Amarillo, Texas, sunrise is at 7:20 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:32 pm CDT.

How many hours of sunshine does Amarillo have in September?

In September, the average sunshine duration is 9.3h.

How high is the UV index in September in Amarillo?

In September, the average daily maximum UV index in Amarillo is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's 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
Amarillo, TX

Average temperature in September - Amarillo, TX
  • Average high temperature in September: 83.3°F

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is December (49.8°F).

  • Average low temperature in September: 62.8°F

The month with the highest average low temperature is July (71.2°F).
The coldest months (with the lowest average low temperature) are January and December (31.1°F).

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Average pressure in September
Amarillo, TX

Average pressure in September - Amarillo, TX
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in September
Amarillo, TX

Average wind speed in September - Amarillo, TX
  • Average wind speed in September: 11.4mph

The windiest month (with the highest average wind speed) is April (14.1mph).
The calmest month (with the lowest average wind speed) is August (10.7mph).

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Average humidity in September
Amarillo, TX

Average humidity in September - Amarillo, TX
  • Average humidity in September: 53%

The month with the highest relative humidity is December (54%).
The month with the lowest relative humidity is April (42%).

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Average rainfall in September
Amarillo, TX

Average rainfall in September - Amarillo, TX
  • Average rainfall in September: 1.18"

The wettest months (with the highest rainfall) are July and October (1.26").
The driest month (with the least rainfall) is February (0.24").

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Average rainfall days in September
Amarillo, TX

Average rainfall days in September - Amarillo, TX
  • Average rainfall days in September: 10.4 days

The month with the highest number of rainy days is July (11.6 days).
The months with the least rainy days are January and February (2.5 days).

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Average snowfall in September
Amarillo, TX

Average snowfall in September - Amarillo, TX
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.18").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Amarillo, TX

Average snowfall days in September - Amarillo, TX
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (3.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Amarillo, TX

Average daylight in September / Average sunshine in September - Amarillo, TX
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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Average sunshine days in September
Amarillo, TX

Average sunshine days in September - Amarillo, TX
  • Average sunshine days in September: 17.2 days

The month with the most sunshine days is January (26.3 days).
The month with the least sunshine days is July (15.4 days).

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Average UV index in September
Amarillo, TX

Average UV index in September - Amarillo, TX
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Amarillo, TX

Average cloud cover in September - Amarillo, TX
  • Average cloud cover in September: 20

The month with the most cloud cover is February (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 14).

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Average visibility in September
Amarillo, TX

Average visibility in September - Amarillo, TX
  • Average visibility in September: 6mi

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

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Amarillo, Texas, USA

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