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
Transitioning from August to September, Radec observes an average high-temperature of a moderately hot 85.1°F (29.5°C), differing subtly from the previous month. Contrasted against daytime highs, Radec records an average nighttime low of 60.4°F (15.8°C) in September.Heat index
September's mean heat index is estimated at a tropical 87.8°F (31°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.One should consider that heat index numbers are for shaded settings and light wind. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Humidity
In September, the average relative humidity in Radec, California, is 54%.Rainfall
In Radec, during September, the rain falls for 4.1 days and regularly aggregates up to 0.28" (7mm) of precipitation. Throughout the year, there are 60.6 rainfall days, and 9.37" (238mm) of precipitation is accumulated.Daylight
In Radec, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:22 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:32 pm PDT.
Sunshine
In Radec, the average sunshine in September is 10.5h.UV index
The average daily maximum UV index in September in Radec is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
Is it hot in Radec during September?
What is the average humidity in September in Radec?
How much does it rain in Radec in September?
How many hours of daylight does Radec have in September?
When is the sunrise / sunset in September in Radec?
How many hours of sunshine does Radec have in September?
What is the UV index reading in September in Radec?
Average temperature in September
Radec, CA
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is December (61.7°F).
- Average low temperature in September: 60.4°F
The month with the highest average low temperature is August (62.2°F).
The coldest month (with the lowest average low temperature) is February (43.3°F).
Average pressure in September
Radec, CA
- Average pressure in September: 29.87"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Radec, CA
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).
Average humidity in September
Radec, CA
- Average humidity in September: 54%
The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).
Average rainfall in September
Radec, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Radec, CA
- Average rainfall days in September: 4.1 days
The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is June (1.4 days).
Average daylight in September /
Average sunshine in September
Radec, CA
- Average daylight in September: 12h and 2min
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 3min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Radec, CA
- Average sunshine days in September: 24 days
The month with the most sunshine days is June (26.5 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in September
Radec, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Radec, CA
- Average cloud cover in September: 10
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in September
Radec, 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).
Radec, California, USA
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