September weather forecast
Anderson, CA

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Weather in September

The first month of the autumn, September, is still a tropical month in Anderson, California, with an average temperature ranging between max 86.5°F (30.3°C) and min 59.2°F (15.1°C).

Temperature

In Anderson, the average high-temperature in September gently drops from a hot 93.7°F (34.3°C) in August to a still tropical 86.5°F (30.3°C). A striking difference from the daytime highs is registered during September nights, with an average temperature of 59.2°F (15.1°C).

Humidity

In Anderson, the average relative humidity in September is 36%.

Rainfall

In Anderson, in September, it is raining for 3.4 days, with typically 0.28" (7mm) of accumulated precipitation. In Anderson, during the entire year, the rain falls for 88.1 days and collects up to 23.62" (600mm) of precipitation.

Snowfall

April through October are months without snowfall in Anderson.

Daylight

In September, the average length of the day in Anderson is 12h and 26min.
On the first day of the month, sunrise is at 6:37 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:52 pm PDT.

Sunshine

In September, the average sunshine is 11.1h.

UV index

In Anderson, California, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 5 in September translates into these instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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Frequently asked questions

How hot does it get in Anderson in September?

The average high-temperature and low-temperature during September are 86.5°F (30.3°C) and 59.2°F (15.1°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in June is estimated at 86°F (30°C).

What is the average humidity in September in Anderson?

In September, the average relative humidity in Anderson, California, is 36%.

How many days does it rain in September in Anderson?

In Anderson, California, during September, the rain falls for 3.4 days and regularly aggregates up to 0.28" (7mm) of precipitation.

When it does not snow in Anderson?

April through October are months without snowfall in Anderson.

What is the average length of the day in September in Anderson?

In September, the average day length in Anderson, California, is 12h and 26min.

When is the sunrise / sunset in September in Anderson?

On the first day of September in Anderson, California, sunrise is at 6:37 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:52 pm PDT.

How long on average sun shines in September in Anderson?

In Anderson, California, the average sunshine duration in September is 11.1h.

What is the UV index intensity in September in Anderson?

In Anderson, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Anderson, CA

Average temperature in September - Anderson, CA
  • Average high temperature in September: 86.5°F

The warmest month (with the highest average high temperature) is July (95.2°F).
The month with the lowest average high temperature is December (51.8°F).

  • Average low temperature in September: 59.2°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is December (37.8°F).

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Average pressure in September
Anderson, CA

Average pressure in September - Anderson, CA
  • Average pressure in September: 29.93"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, July and August (29.92"Hg).

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Average wind speed in September
Anderson, CA

Average wind speed in September - Anderson, CA
  • Average wind speed in September: 4.5mph

The windiest month (with the highest average wind speed) is March (5.4mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

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Average humidity in September
Anderson, CA

Average humidity in September - Anderson, CA
  • Average humidity in September: 36%

The month with the highest relative humidity is March (73%).
The month with the lowest relative humidity is August (32%).

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Average rainfall in September
Anderson, CA

Average rainfall in September - Anderson, CA
  • Average rainfall in September: 0.28"

The wettest month (with the highest rainfall) is March (4.65").
The driest month (with the least rainfall) is July (0.08").

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Average rainfall days in September
Anderson, CA

Average rainfall days in September - Anderson, CA
  • Average rainfall days in September: 3.4 days

The month with the highest number of rainy days is March (15.1 days).
The month with the least rainy days is August (1.4 days).

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Average snowfall in September
Anderson, CA

Average snowfall in September - Anderson, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Anderson, CA

Average snowfall days in September - Anderson, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Anderson, CA

Average daylight in September / Average sunshine in September - Anderson, CA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 11h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in September
Anderson, CA

Average sunshine days in September - Anderson, CA
  • Average sunshine days in September: 26 days

The month with the most sunshine days is July (28.4 days).
The month with the least sunshine days is March (14.6 days).

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Average UV index in September
Anderson, CA

Average UV index in September - Anderson, CA
  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Anderson, CA

Average cloud cover in September - Anderson, CA
  • Average cloud cover in September: 9

The month with the most cloud cover is March (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in September
Anderson, CA

Average visibility in September - Anderson, 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).

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Anderson, California, USA

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