September weather forecastGarden Acres, CA
September
Weather in September
September, the first month of the autumn in Garden Acres, is still a tropical month, with an average temperature fluctuating between 58.5°F (14.7°C) and 88.7°F (31.5°C).Temperature
Upon the beginning of September, Garden Acres's high-temperatures register at a still tropical 88.7°F (31.5°C), closely mirroring the preceding month. September nights experience a distinct temperature drop from the daily highs, with an average low-temperature of 58.5°F (14.7°C).Heat index
September's heat index is estimated at a hot 89.6°F (32°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.The heat index's values are generally associated with conditions in shade and light breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
The average relative humidity in September is 45%.Rainfall
In Garden Acres, in September, during 2.1 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. Throughout the year, in Garden Acres, there are 50.5 rainfall days, and 5.12" (130mm) of precipitation is accumulated.Daylight
In Garden Acres, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:33 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:48 pm PDT.
Sunshine
In September, the average sunshine is 11.4h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Garden Acres, CA
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is December (55.2°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is December (40.8°F).
Average pressure in September
Garden Acres, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Garden Acres, CA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is June (6.9mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in September
Garden Acres, CA
- Average humidity in September: 45%
The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is July (42%).
Average rainfall in September
Garden Acres, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is February (0.91").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in September
Garden Acres, CA
- Average rainfall days in September: 2.1 days
The month with the highest number of rainy days is March (9.3 days).
The month with the least rainy days is June (0.9 days).
Average daylight in September /
Average sunshine in September
Garden Acres, 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 36min).
- Average sunshine in September: 11h and 24min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in September
Garden Acres, CA
- Average sunshine days in September: 27.5 days
The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is February (21 days).
Average UV index in September
Garden Acres, CA
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Garden Acres, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Garden Acres, 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).
