September weather forecastRancho Santa Fe, CA
September
Weather in September
The first month of the autumn, September, is still a warm month in Rancho Santa Fe, California, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 76.6°F (24.8°C).Temperature
September, characterized by an average high temperature of 76.6°F (24.8°C) and a low temperature of 64.8°F (18.2°C), is generally the warmest month.Humidity
In Rancho Santa Fe, the average relative humidity in September is 69%.Rainfall
In Rancho Santa Fe, in September, it is raining for 3.8 days, with typically 0.28" (7mm) of accumulated precipitation. In Rancho Santa Fe, during the entire year, the rain falls for 55.7 days and collects up to 5.75" (146mm) of precipitation.Daylight
The average length of the day in September in Rancho Santa Fe is 12h and 22min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:13 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:34 pm PDT.
Sunshine
The average sunshine in September in Rancho Santa Fe is 10.3h.UV index
In Rancho Santa Fe, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 5 translates into these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rancho Santa Fe, CA
- Average high temperature in September: 76.6°F
The warmest month (with the highest average high temperature) is September (76.6°F).
The months with the lowest average high temperature are February and December (63°F).
- Average low temperature in September: 64.8°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).
Average pressure in September
Rancho Santa Fe, CA
- Average pressure in September: 29.88"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed in September
Rancho Santa Fe, CA
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is October (5.2mph).
Average humidity in September
Rancho Santa Fe, CA
- Average humidity in September: 69%
The month with the highest relative humidity is June (75%).
The month with the lowest relative humidity is November (60%).
Average rainfall in September
Rancho Santa Fe, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is December (1.06").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Rancho Santa Fe, CA
- Average rainfall days in September: 3.8 days
The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is August (2.8 days).
Average daylight in September /
Average sunshine in September
Rancho Santa Fe, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 18min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
Rancho Santa Fe, CA
- Average sunshine days in September: 23.7 days
The month with the most sunshine days is October (25.9 days).
The month with the least sunshine days is February (21 days).
Average UV index in September
Rancho Santa Fe, CA
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Rancho Santa Fe, CA
- Average cloud cover in September: 12
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in September
Rancho Santa Fe, 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).
