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
During the shift to September, a minor reduction in average high-temperature is observed, shifting from 93.9°F (34.4°C) in August to a still hot 87.1°F (30.6°C). September sees the temperature falling to a mean low of 68.2°F (20.1°C).Humidity
In September, the average relative humidity is 32%.Rainfall
In Cahuilla Hills, in September, it is raining for 6 days, with typically 0.55" (14mm) of accumulated precipitation. In Cahuilla Hills, during the entire year, the rain falls for 51.6 days and collects up to 6.06" (154mm) of precipitation.Daylight
The average length of the day in September is 12h and 22min.On the first day of September in Cahuilla Hills, sunrise is at 6:20 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:30 pm PDT.
Sunshine
The average sunshine in September is 10.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Cahuilla Hills have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Cahuilla Hills, CA
- Average high temperature in September: 87.1°F
The warmest month (with the highest average high temperature) is July (94.5°F).
The month with the lowest average high temperature is December (58.1°F).
- Average low temperature in September: 68.2°F
The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is December (43.5°F).
Average pressure in September
Cahuilla Hills, CA
- Average pressure in September: 29.84"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).
Average wind speed in September
Cahuilla Hills, CA
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is May (8.6mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).
Average humidity in September
Cahuilla Hills, CA
- Average humidity in September: 32%
The month with the highest relative humidity is December (47%).
The months with the lowest relative humidity are June, July and August (29%).
Average rainfall in September
Cahuilla Hills, CA
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is May (0.12").
Average rainfall days in September
Cahuilla Hills, CA
- Average rainfall days in September: 6 days
The month with the highest number of rainy days is July (8.8 days).
The month with the least rainy days is June (1.8 days).
Average daylight in September /
Average sunshine in September
Cahuilla Hills, 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: 10h and 0min).
- Average sunshine in September: 10h and 3min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Cahuilla Hills, CA
- Average sunshine days in September: 22.3 days
The month with the most sunshine days is October (27.5 days).
The month with the least sunshine days is July (18.3 days).
Average UV index in September
Cahuilla Hills, 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
Cahuilla Hills, CA
- Average cloud cover in September: 6
The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in September
Cahuilla Hills, 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).
Cahuilla Hills, California, USA
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