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 September, Harbison Canyon observes a subtle ascent to a moderately hot 84.2°F (29°C) from August's 87.3°F (30.7°C) in the average high-temperature. Throughout September, Harbison Canyon experiences a low-temperature average of 62.8°F (17.1°C).Heat index
The heat index value for September is evaluated at a hot 86°F (30°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humidity
The average relative humidity in September is 53%.Rainfall
In Harbison Canyon, in September, during 5.5 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 62 rainfall days, and 6.38" (162mm) of precipitation is accumulated.Daylight
In Harbison Canyon, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:11 pm. On the last day of September, sunrise is at 6:41 am and sunset at 6:32 pm PDT.
Sunshine
In September, the average sunshine is 10.4h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
How hot does it get in Harbison Canyon in September?
What is the average humidity in September in Harbison Canyon?
How many days does it rain in September in Harbison Canyon?
What is the average length of the day in September in Harbison Canyon?
When is the sunrise / sunset in September in Harbison Canyon?
How long on average sun shines in September in Harbison Canyon?
What is the month with the highest UV index in Harbison Canyon?
What is the UV index intensity in September in Harbison Canyon?
Average temperature in September
Harbison Canyon, CA
- Average high temperature in September: 84.2°F
The warmest month (with the highest average high temperature) is August (87.3°F).
The month with the lowest average high temperature is December (61.3°F).
- Average low temperature in September: 62.8°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (44.2°F).
Average pressure in September
Harbison Canyon, CA
- Average pressure in September: 29.86"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Harbison Canyon, CA
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.1mph).
Average humidity in September
Harbison Canyon, CA
- Average humidity in September: 53%
The month with the highest relative humidity is May (62%).
The month with the lowest relative humidity is November (51%).
Average rainfall in September
Harbison Canyon, CA
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is February (0.94").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Harbison Canyon, CA
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (1.5 days).
Average daylight in September /
Average sunshine in September
Harbison Canyon, 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 2min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Harbison Canyon, CA
- Average sunshine days in September: 21.8 days
The month with the most sunshine days is June (27.5 days).
The month with the least sunshine days is July (19.4 days).
Average UV index in September
Harbison Canyon, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in September
Harbison Canyon, CA
- Average cloud cover in September: 8
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Harbison Canyon, 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).
Harbison Canyon, California, USA
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