September weather forecast
Austin, NV

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Weather in September

Austin starts seeing a reprieve from high temperatures as September rolls in. The temperature begins to decline, heading toward milder conditions, but still quite warm with a high of 72.7°F (22.6°C). The shift from summer to fall is evident. While the heat may have subsided, the opportunities to enjoy outdoor activities continue. Landscapes start transforming into warmer hues, making this transition season all the more appealing.

Temperature

September implies a soft temperature shift, with average high-temperatures reducing from August's warm 81.1°F (27.3°C) to an agreeable 72.7°F (22.6°C). September in Austin witnesses an average low-temperature hovering around a fresh 52.2°F (11.2°C).

Humidity

In September, the average relative humidity is 30%.

Rainfall

In Austin, in September, it is raining for 4.7 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, there are 58.1 rainfall days, and 7.36" (187mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. September is the first month it typically snows in Austin. Throughout September, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow. In Austin, during the entire year, snow falls for 44.6 days and aggregates up to 28.27" (718mm) of snow.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 6:17 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:31 pm PDT.

Sunshine

In Austin, the average sunshine in September is 10.4h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 4 in September translates into this advice:
Prioritize safety - Suggestions to prevent sun damage are offered. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Stay sun-safe with clothing that is both closely woven and worn loosely. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Austin in September?

The high-temperature, in September, in Austin, records 72.7°F (22.6°C), while the low-temperature is 52.2°F (11.2°C).

What is the average humidity in September?

The average relative humidity in September is 30%.

How many days does it rain in September?

In Austin, in September, during 4.7 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

When does it start to snow?

September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow.

How many hours of daylight does Austin have in September?

In Austin, 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 6:17 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:31 pm PDT.

How many hours of sunshine does Austin have in September?

In September, the average sunshine duration is 10.4h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
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
Austin, NV

Average temperature in September - Austin, NV
  • Average high temperature in September: 72.7°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (34.7°F).

  • Average low temperature in September: 52.2°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is December (19.4°F).

Average pressure in September
Austin, NV

Average pressure in September - Austin, NV
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in September
Austin, NV

Average wind speed in September - Austin, NV
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is January (5.9mph).

Average humidity in September
Austin, NV

Average humidity in September - Austin, NV
  • Average humidity in September: 30%

The months with the highest relative humidity are January and December (73%).
The month with the lowest relative humidity is August (25%).

Average rainfall in September
Austin, NV

Average rainfall in September - Austin, NV
  • Average rainfall in September: 0.43"

The wettest month (with the highest rainfall) is May (1.3").
The driest month (with the least rainfall) is August (0.31").

Average rainfall days in September
Austin, NV

Average rainfall days in September - Austin, NV
  • Average rainfall days in September: 4.7 days

The month with the highest number of rainy days is May (9.2 days).
The month with the least rainy days is November (2.2 days).

Average snowfall in September
Austin, NV

Average snowfall in September - Austin, NV
  • Average snowfall in September: 0.2"

The month with the highest snowfall is March (6.1").
The months with the least snowfall are June, July and August (0").

Average snowfall days in September
Austin, NV

Average snowfall days in September - Austin, NV
  • Average snowfall days in September: 0.4 days

The month with the highest number of snowfall days is December (8.6 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in September /
Average sunshine in September
Austin, NV

Average daylight in September / Average sunshine in September - Austin, NV
  • 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: 10h and 2min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).

Average sunshine days in September
Austin, NV

Average sunshine days in September - Austin, NV
  • Average sunshine days in September: 23.5 days

The month with the most sunshine days is October (24.9 days).
The month with the least sunshine days is March (17.7 days).

Average UV index in September
Austin, NV

Average UV index in September - Austin, NV
  • Average UV index in September: 4

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in September
Austin, NV

Average cloud cover in September - Austin, NV
  • Average cloud cover in September: 12

The month with the most cloud cover is December (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 11).

Average visibility in September
Austin, NV

Average visibility in September - Austin, NV
  • Average visibility in September: 6mi

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

Austin, Nevada, USA

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