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
As August turns into September, the average high-temperatures rest at a still hot 88.7°F (31.5°C), showing a minor variation from the prior month. Racimo documents a significant temperature variance in September, with the mean nighttime lows settling at an enjoyable 64.2°F (17.9°C).Heat index
In September, the heat index is calculated to be a tropical 89.6°F (32°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
The average relative humidity in September is 45%.Rainfall
In Racimo, in September, during 1.9 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. In Racimo, during the entire year, the rain falls for 46.6 days and collects up to 6.54" (166mm) of precipitation.Daylight
In Racimo, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:35 pm PDT.
Sunshine
The average sunshine in September is 10.7h.UV index
In Racimo, California, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Deter overexposure. Protecting against the sun's effects is essential. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Racimo have in September?
When is the sunrise / sunset in September in Racimo?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Racimo, CA
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in September: 64.2°F
The month with the highest average low temperature is August (66.4°F).
The coldest month (with the lowest average low temperature) is February (45.9°F).
Average pressure in September
Racimo, CA
- Average pressure in September: 29.88"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Racimo, CA
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is May (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in September
Racimo, CA
- Average humidity in September: 45%
The months with the highest relative humidity are March and May (54%).
The month with the lowest relative humidity is August (43%).
Average rainfall in September
Racimo, CA
- Average rainfall in September: 0.08"
The wettest months (with the highest rainfall) are February and December (1.42").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in September
Racimo, CA
- Average rainfall days in September: 1.9 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.1 days).
Average daylight in September /
Average sunshine in September
Racimo, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 10h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).
Average sunshine days in September
Racimo, CA
- Average sunshine days in September: 26.8 days
The month with the most sunshine days is August (28.6 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in September
Racimo, CA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Racimo, CA
- Average cloud cover in September: 7
The months with the most cloud cover are February, March and December (Cloud cover 21).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in September
Racimo, 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).
Racimo, California, USA
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