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
A minor adjustment in San Andreas's average high-temperature is noted with the start of September, touching a moderately hot 85.6°F (29.8°C) from August's 91°F (32.8°C). San Andreas documents a striking divergence from daytime highs, with an average nighttime temperature of 57°F (13.9°C) in September.Humidity
In September, the average relative humidity in San Andreas, California, is 39%.Rainfall
In San Andreas, California, during September, the rain falls for 3.3 days and regularly aggregates up to 0.2" (5mm) of precipitation. In San Andreas, during the entire year, the rain falls for 73.3 days and collects up to 16.42" (417mm) of precipitation.Daylight
In San Andreas, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:33 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:46 pm PDT.
Sunshine
In San Andreas, the average sunshine in September is 11.3h.UV index
In San Andreas, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
How hot is September in San Andreas?
What is the average humidity in September in San Andreas?
How many days does it rain in September in San Andreas?
How many hours of daylight does San Andreas have in September?
When are sunrise and sunset in September in San Andreas?
How long on average sun shines in September in San Andreas?
How high is the UV index in September in San Andreas?
Average temperature in September
San Andreas, CA
- Average high temperature in September: 85.6°F
The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is December (53.6°F).
- Average low temperature in September: 57°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is December (37.8°F).
Average pressure in September
San Andreas, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
San Andreas, CA
- Average wind speed in September: 4.4mph
The windiest month (with the highest average wind speed) is February (5.6mph).
The calmest months (with the lowest average wind speed) are August and September (4.4mph).
Average humidity in September
San Andreas, CA
- Average humidity in September: 39%
The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is July (37%).
Average rainfall in September
San Andreas, CA
- Average rainfall in September: 0.2"
The wettest month (with the highest rainfall) is March (3.39").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
San Andreas, CA
- Average rainfall days in September: 3.3 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is July (1.7 days).
Average daylight in September /
Average sunshine in September
San Andreas, 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 36min).
- Average sunshine in September: 11h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
San Andreas, CA
- Average sunshine days in September: 26.4 days
The month with the most sunshine days is July (28.2 days).
The month with the least sunshine days is March (16.9 days).
Average UV index in September
San Andreas, CA
- Average UV index in September: 5
The month with the highest UV index is 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
San Andreas, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
San Andreas, 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).
San Andreas, California, USA
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