September weather forecastKnights Landing, CA
September
Weather in September
The first month of the autumn, September, is still a tropical month in Knights Landing, California, with an average temperature ranging between max 88.9°F (31.6°C) and min 59.4°F (15.2°C).Temperature
Knights Landing experiences a transition to a still hot 88.9°F (31.6°C) in average high-temperatures with the arrival of September, not greatly differing from August's 93.7°F (34.3°C). A noteworthy thermal contrast characterizes Knights Landing's September nights, with temperatures averaging at a moderate 59.4°F (15.2°C).Heat index
September's heat index is estimated at a hot 89.6°F (32°C). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Humidity
September is the least humid month, with an average relative humidity of 43%.Rainfall
In Knights Landing, during September, the rain falls for 1.6 days and regularly aggregates up to 0.08" (2mm) of precipitation. In Knights Landing, during the entire year, the rain falls for 67.1 days and collects up to 12.09" (307mm) of precipitation.Daylight
In Knights Landing, California, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:36 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:50 pm PDT.
Sunshine
In September, the average sunshine is 11.2h.UV index
In Knights Landing, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A daily high UV index of 5 in September leads to these guidelines:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Knights Landing, CA
- Average high temperature in September: 88.9°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 (54.5°F).
- Average low temperature in September: 59.4°F
The months with the highest average low temperature are August and September (59.4°F).
The coldest month (with the lowest average low temperature) is December (41.2°F).
Average pressure in September
Knights Landing, 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 (29.9"Hg).
Average wind speed in September
Knights Landing, CA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is February (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.7mph).
Average humidity in September
Knights Landing, CA
- Average humidity in September: 43%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (43%).
Average rainfall in September
Knights Landing, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is February (2.44").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Knights Landing, CA
- Average rainfall days in September: 1.6 days
The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is July (0.8 days).
Average daylight in September /
Average sunshine in September
Knights Landing, 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: 11h and 12min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Knights Landing, CA
- Average sunshine days in September: 27.9 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (18.2 days).
Average UV index in September
Knights Landing, 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
Knights Landing, CA
- Average cloud cover in September: 8
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Knights Landing, 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).
