September weather forecastFort Ross, CA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Fort Ross, California, with an average temperature varying between 53.4°F (11.9°C) and 79.9°F (26.6°C).Temperature
The arrival of September sees a recorded average high-temperature of a still warm 79.9°F (26.6°C), showing little divergence from the previous month's conditions. Fort Ross's September nights bring a significant temperature shift, averaging at a cool 53.4°F (11.9°C).Humidity
With an average relative humidity of 62%, September is the least humid month in Fort Ross.Rainfall
In September, in Fort Ross, the rain falls for 1.9 days. Throughout September, 0.08" (2mm) of precipitation is accumulated. Throughout the year, there are 60.1 rainfall days, and 12.87" (327mm) of precipitation is accumulated.Daylight
The average length of the day in September in Fort Ross is 12h and 25min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:42 pm. On the last day of September, in Fort Ross, sunrise is at 7:08 am and sunset at 6:56 pm PDT.
Sunshine
In Fort Ross, the average sunshine in September is 10.8h.UV index
The average daily maximum UV index in September in Fort Ross is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, an average UV index of 5 transforms into the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Fort Ross, CA
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in September: 53.4°F
The months with the highest average low temperature are August and September (53.4°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).
Average pressure in September
Fort Ross, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in September
Fort Ross, CA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity in September
Fort Ross, CA
- Average humidity in September: 62%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).
Average rainfall in September
Fort Ross, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is February (3.27").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Fort Ross, CA
- Average rainfall days in September: 1.9 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).
Average daylight in September /
Average sunshine in September
Fort Ross, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 10h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Fort Ross, CA
- Average sunshine days in September: 27.9 days
The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is February (19.9 days).
Average UV index in September
Fort Ross, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Fort Ross, CA
- Average cloud cover in September: 12
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in September
Fort Ross, 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).
