September weather forecastBonita, CA
September
Weather in September
The first month of the autumn, September, is still a warm month in Bonita, California, with temperature in the range of an average high of 78.3°F (25.7°C) and an average low of 65.5°F (18.6°C).Temperature
Bonita observes an average high-temperature of a still moderately hot 78.3°F (25.7°C) in September, barely different from 79.2°F (26.2°C) in August. September witnesses an average low-temperature hovering around a refreshing 65.5°F (18.6°C).Humidity
The average relative humidity in September in Bonita is 66%.Rainfall
In Bonita, during September, the rain falls for 3.5 days and regularly aggregates up to 0.28" (7mm) of precipitation. In Bonita, during the entire year, the rain falls for 51 days and collects up to 5.63" (143mm) of precipitation.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:12 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:33 pm PDT.
Sunshine
In Bonita, the average sunshine in September is 10.3h.UV index
The months with the highest UV index in Bonita are June through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a regular UV index of 6 translates into these guidelines:
Deflect overexposure. Sun protection is a necessity. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bonita, CA
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (63.7°F).
- Average low temperature in September: 65.5°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is February (51.1°F).
Average pressure in September
Bonita, 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
Bonita, CA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is October (5mph).
Average humidity in September
Bonita, CA
- Average humidity in September: 66%
The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (58%).
Average rainfall in September
Bonita, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is February (1.1").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Bonita, CA
- Average rainfall days in September: 3.5 days
The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.7 days).
Average daylight in September /
Average sunshine in September
Bonita, 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 month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Bonita, CA
- Average sunshine days in September: 24.8 days
The month with the most sunshine days is June (27.2 days).
The month with the least sunshine days is February (21.1 days).
Average UV index in September
Bonita, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (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
Bonita, CA
- Average cloud cover in September: 12
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in September
Bonita, 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).
