September weather forecast
Smith River, CA

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Weather in September

September, the first month of the autumn in Smith River, is also an agreeable month, with an average temperature fluctuating between 68.9°F (20.5°C) and 51.3°F (10.7°C).

Temperature

Smith River's shift into September is marked by a subtle change to a still agreeable 68.9°F (20.5°C) from August's 71.6°F (22°C) in temperature. September sees the temperature falling to a mean low of 51.3°F (10.7°C).

Humidity

July and September, with an average relative humidity of 73%, are the least humid months.

Rainfall

In Smith River, California, in September, during 5.6 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 132.6 rainfall days, and 47.76" (1213mm) of precipitation is accumulated.

Snowfall

January, March through December are months without snowfall.

Daylight

In Smith River, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:43 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:13 am and sunset at 6:59 pm PDT.

Sunshine

In Smith River, the average sunshine in September is 10.1h.

UV index

In Smith River, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Adopt protective measures - It is advised to guard against sun damage. To guard against the harmful effects of the Sun, minimize exposure during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Smith River in September?

The average high-temperature and low-temperature during September are 68.9°F (20.5°C) and 51.3°F (10.7°C) respectively.

What are the least humid months?

The months with the lowest humidity are July and September, with an average relative humidity of 73%.

What is the average humidity in September?

In Smith River, the average relative humidity in September is 73%.

How much does it rain in September?

In September, the rain falls for 5.6 days. Throughout September, 1.1" (28mm) of precipitation is accumulated.

When it does not snow?

January, March through December are months without snowfall.

How many hours of daylight does Smith River have in September?

In September, the average day length is 12h and 28min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:43 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:59 pm PDT.

How many hours of sunshine does Smith River have in September?

In September, the average sunshine duration is 10.1h.

What is the UV index intensity in September in Smith River?

In Smith River, California, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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
Smith River, CA

Average temperature in September - Smith River, CA
  • Average high temperature in September: 68.9°F

The warmest month (with the highest average high temperature) is July (71.8°F).
The month with the lowest average high temperature is December (50.4°F).

  • Average low temperature in September: 51.3°F

The month with the highest average low temperature is July (53.4°F).
The coldest month (with the lowest average low temperature) is February (40.5°F).

Average pressure in September
Smith River, CA

Average pressure in September - Smith River, CA
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).

Average wind speed in September
Smith River, CA

Average wind speed in September - Smith River, CA
  • Average wind speed in September: 6.1mph

The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in September
Smith River, CA

Average humidity in September - Smith River, CA
  • Average humidity in September: 73%

The month with the highest relative humidity is March (83%).
The months with the lowest relative humidity are July and September (73%).

Average rainfall in September
Smith River, CA

Average rainfall in September - Smith River, CA
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is December (8.19").
The driest month (with the least rainfall) is July (0.12").

Average rainfall days in September
Smith River, CA

Average rainfall days in September - Smith River, CA
  • Average rainfall days in September: 5.6 days

The month with the highest number of rainy days is March (19.2 days).
The month with the least rainy days is July (2.3 days).

Average snowfall in September
Smith River, CA

Average snowfall in September - Smith River, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.59").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Smith River, CA

Average snowfall days in September - Smith River, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Smith River, CA

Average daylight in September / Average sunshine in September - Smith River, CA
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 10h and 1min

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

Average sunshine days in September
Smith River, CA

Average sunshine days in September - Smith River, CA
  • Average sunshine days in September: 23.6 days

The month with the most sunshine days is July (27.8 days).
The month with the least sunshine days is March (10.7 days).

Average UV index in September
Smith River, CA

Average UV index in September - Smith River, CA
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 2).

Average cloud cover in September
Smith River, CA

Average cloud cover in September - Smith River, CA
  • Average cloud cover in September: 18

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 10).

Average visibility in September
Smith River, CA

Average visibility in September - Smith River, CA
  • 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).

Smith River, California, USA

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