September weather forecastSmith River, CA
September
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 12h and 30min
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 6min
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: 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: 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: 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: 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).
