September weather forecast
Reno, NV

Big signage at the entrance into Reno, Nevada
Big signage at the entrance into Reno, Nevada

Weather in September

The first month of the autumn, September, is still a warm month in Reno, Nevada, with average temperature fluctuating between 49.3°F (9.6°C) and 75.2°F (24°C).

Temperature

In September, the average high-temperature marginally drops, from a warm 83.1°F (28.4°C) in August, to a still moderately hot 75.2°F (24°C). In Reno, the average low-temperature is 49.3°F (9.6°C).

Humidity

In Reno, Nevada, the average relative humidity is 34%.

Rainfall

In Reno, during September, the rain falls for 3.5 days and regularly aggregates up to 0.24" (6mm) of precipitation. Throughout the year, in Reno, there are 78.7 rainfall days, and 9.29" (236mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. September is the first month it typically snows in Reno. Throughout September, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow. In Reno, Nevada, during the entire year, snow falls for 33.8 days, and aggregates up to 23.94" (608mm) of snow.

Daylight

The average length of the day is 12.4h.

Sunshine

In Reno, the average sunshine in September is 11.1h.

UV index

In Reno, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in September in Reno?

In September, the average relative humidity is 34%.

How many days does it rain in September in Reno?

In Reno, in September, it is raining for 3.5 days, with typically 0.24" (6mm) of accumulated precipitation.

When does it start snowing in Reno?

September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow.

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

In September, the average length of the day is 12.4h.

How many hours of sunshine does Reno have in September?

In Reno, Nevada, the average sunshine in September is 11.1h.

How high is the UV index in September in Reno?

In September, the average daily maximum UV index in Reno is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in September
Reno, NV

Average temperature in September - Reno, NV
  • Average high temperature in September: 75.2°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (38.3°F).

  • Average low temperature in September: 49.3°F

The month with the highest average low temperature is July (56.3°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).

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Average pressure in September
Reno, NV

Average pressure in September - Reno, NV
  • Average pressure in September: 29.94"

The month with the highest atmospheric pressure is January (30.19").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in September
Reno, NV

Average wind speed in September - Reno, NV
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is January (5mph).

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Average humidity in September
Reno, NV

Average humidity in September - Reno, NV
  • Average humidity in September: 34%

The month with the highest relative humidity is January (73%).
Months with the lowest relative humidity are July and August (28%).

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Average rainfall in September
Reno, NV

Average rainfall in September - Reno, NV
  • Average rainfall in September: 0.24"

The wettest month (with the highest rainfall) is March (1.42").
The driest month (with the least rainfall) is August (0.16").

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Average rainfall days in September
Reno, NV

Average rainfall days in September - Reno, NV
  • Average rainfall days in September: 3.5 days

The month with the highest number of rainy days is March (11.6 days).
The month with the least rainy days is August (2.8 days).

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Average snowfall in September
Reno, NV

Average snowfall in September - Reno, NV
  • Average snowfall in September: 0.12"

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

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Average snowfall days in September
Reno, NV

Average snowfall days in September - Reno, NV
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is December (7.6 days).
Months with the least snowfall days are June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Reno, NV
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 11.1h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.1h).

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Average sunshine days in September
Reno, NV

Average sunshine days in September - Reno, NV
  • Average sunshine days in September: 25.4 days

The month with the most sunshine days is October (26.3 days).
The month with the least sunshine days is March (15.7 days).

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Average UV index in September
Reno, NV

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

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Reno, NV

Average cloud cover in September - Reno, NV
  • Average cloud cover in September: 10

The month with the most cloud cover is December (Cloud cover 34).
Months with the least cloud cover are July and August (Cloud cover 8).

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Average visibility in September
Reno, NV

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

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

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