Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Knights Landing, California, marks the start of September with an average high-temperature of a still hot 88.9°F (31.6°C), hinting at a slight fluctuation from August's 93.7°F (34.3°C). In Knights Landing, the average temperature during the nights of September marks a significant drop from the daily high, settling at a moderate 59.4°F (15.2°C).Heat index
The heat index value for September is estimated at a hot 89.6°F (32°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
The least humid month is September, 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. Throughout the year, in Knights Landing, there are 67.1 rainfall days, and 12.09" (307mm) of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September in Knights Landing, sunrise is at 6:36 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm PDT.
Sunshine
In September, the average sunshine in Knights Landing is 11.2h.UV index
In September, the average daily maximum UV index in Knights Landing is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Act with care - The need to guard against sun damage is communicated. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
How hot is September in Knights Landing?
What is the least humid month in Knights Landing?
What is the average humidity in September in Knights Landing?
How much does it rain in Knights Landing in September?
What is the average length of the day in September in Knights Landing?
When is the sunrise / sunset in September in Knights Landing?
How many hours of sunshine does Knights Landing have in September?
How high is the UV index in September in Knights Landing?
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 2min
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 1min
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).
Knights Landing, California, USA
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