September weather forecast
Stateline, NV

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Weather in September

September is a transition period, marking the commencement of fall. As autumn sets in, the leaves change colors, attributing to a unique aesthetic appeal to the regions. Though temperatures gradually descend, a balance between warmth and coolness establishes an agreeable environment. The daylight hours begin to recede, contrasting with the extended sunlight witnessed in the previous months. However, pleasant weather conditions retain sufficient allure to outdoor activities and exploration.

Temperature

Stateline experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from a moderately hot 74.7°F (23.7°C) in August to an agreeable 68.5°F (20.3°C). Despite the hot September days, Stateline's nights see an average temperature plunge to a frosty 44.2°F (6.8°C).

Humidity

In Stateline, the average relative humidity in September is 43%.

Rainfall

In Stateline, Nevada, during September, the rain falls for 4.2 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Stateline, during the entire year, the rain falls for 63.5 days and collects up to 20.75" (527mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.8 snowfall days, it receives 0.31" (8mm) of snow. In Stateline, during the entire year, snow falls for 84.1 days and aggregates up to 118.7" (3015mm) of snow.

Daylight

The average length of the day in September in Stateline is 12h and 25min.
On the first day of the month, sunrise is at 6:29 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:43 pm PDT.

Sunshine

In September, the average sunshine is 11.1h.

UV index

The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To cut down UV radiation exposure by about half, sport a wide-brim hat. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Stateline?

In September, the average high-temperature and low-temperature are 68.5°F (20.3°C) and 44.2°F (6.8°C) respectively.

What is the average humidity in September?

In Stateline, the average relative humidity in September is 43%.

How many days does it rain in September?

In September, the rain falls for 4.2 days. Throughout September, 0.31" (8mm) of precipitation is accumulated.

When does it start snowing?

September is the first month it typically snows in Stateline. Throughout September, in the average 0.8 snowfall days, it receives 0.31" (8mm) of snow.

What is the average length of the day in September?

The average day length in September in Stateline is 12h and 25min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:29 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm PDT.

How long on average sun shines in September?

In September, the average sunshine duration is 11.1h.

What is the UV index reading in September?

The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Stateline, NV

Average temperature in September - Stateline, NV
  • Average high temperature in September: 68.5°F

The warmest month (with the highest average high temperature) is July (75.4°F).
The month with the lowest average high temperature is December (35.2°F).

  • Average low temperature in September: 44.2°F

The month with the highest average low temperature is July (49.6°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).

Average pressure in September
Stateline, NV

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

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Stateline, NV

Average wind speed in September - Stateline, NV
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in September
Stateline, NV

Average humidity in September - Stateline, NV
  • Average humidity in September: 43%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is August (39%).

Average rainfall in September
Stateline, NV

Average rainfall in September - Stateline, NV
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is February (3.62").
The driest month (with the least rainfall) is August (0.24").

Average rainfall days in September
Stateline, NV

Average rainfall days in September - Stateline, NV
  • Average rainfall days in September: 4.2 days

The month with the highest number of rainy days is May (9.3 days).
The month with the least rainy days is November (3.7 days).

Average snowfall in September
Stateline, NV

Average snowfall in September - Stateline, NV
  • Average snowfall in September: 0.31"

The month with the highest snowfall is March (25.75").
The months with the least snowfall are July and August (0").

Average snowfall days in September
Stateline, NV

Average snowfall days in September - Stateline, NV
  • Average snowfall days in September: 0.8 days

The month with the highest number of snowfall days is March (15.9 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in September / Average sunshine in September - Stateline, 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 30min).

  • Average sunshine in September: 11h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

Average sunshine days in September
Stateline, NV

Average sunshine days in September - Stateline, NV
  • Average sunshine days in September: 25 days

The month with the most sunshine days is August (25.7 days).
The month with the least sunshine days is March (13.3 days).

Average UV index in September
Stateline, NV

Average UV index in September - Stateline, NV
  • Average UV index in September: 3

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in September
Stateline, NV

Average cloud cover in September - Stateline, NV
  • Average cloud cover in September: 9

The month with the most cloud cover is March (Cloud cover 36).
The months with the least cloud cover are July and August (Cloud cover 8).

Average visibility in September
Stateline, NV

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

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

Stateline, Nevada, USA

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