Anaheim
California, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Anaheim, CA

Aerial view of a beautiful residential area in Anaheim, California, with a tall flat building in the distance
Aerial view of a beautiful residential area in Anaheim, California, with a tall flat building in the distance
September, the first month of the autumn, in Anaheim, is still a warm month, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 85.8°F (29.9°C).

Temperature

In September, the average high-temperature is almost the same as in August - a moderately hot 85.8°F (29.9°C). The average low-temperature, in September, is 62.2°F (16.8°C).

Rainfall

Months with rainfall are January through July, September through December. September is the first month it rains in Anaheim. Throughout September, in the average 2 rainfall days, it receives 0.1" (2.3mm) of precipitation. In Anaheim, during the entire year, the rain falls for 34 days and collects up to 14.3" (362.3mm) of precipitation.

Daylight

The average length of the day in September is 12.4h.

Sunshine

The average sunshine in September is 9h.

UV index

In Anaheim, the average daily maximum UV index is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 8 interpret into the following advice:
Take special precautions, as unprotected skin can be damaged and can burn quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Anaheim?

In September, in Anaheim, California, the average high-temperature is 85.8°F (29.9°C), and the average low-temperature is 62.2°F (16.8°C).

When does it start raining in Anaheim?

September is the first month it rains in Anaheim. Throughout September, in the average 2 rainfall days, it receives 0.1" (2.3mm) of precipitation.

How many hours of daylight does Anaheim have in September?

The average length of the day in September in Anaheim is 12.4h.

How many hours of sunshine does Anaheim have in September?

The average sunshine in September in Anaheim is 9h.

What is the UV index reading in September in Anaheim?

The average daily maximum UV index in September in Anaheim is 8. A UV Index reading of 8 to 10 represents a very high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Anaheim, CA
  • Average high temperature in September: 85.8°F

The warmest month (with the highest average high temperature) is August (86.9°F).
The month with the lowest average high temperature is January (69.7°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is January (47.3°F).

Average rainfall in September - Anaheim, CA
  • Average rainfall in September: 0.1"

The wettest month (with the highest rainfall) is January (3.4").
Driest months (with the lowest rainfall) are July and August (0").

Average rainfall days in September - Anaheim, CA
  • Average rainfall days in September: 2 days

The month with the highest number of rainy days is March (6 days).
Months with the lowest number of rainy days are June and July (0 days).

Average daylight in September / Average sunshine in September - Anaheim, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 9h

Months with most sunshine are July and August (Average sunshine: 11h).
Months with least sunshine are January, November and December (Average sunshine: 7).

Average UV index in September - Anaheim, CA
  • Average UV index in September: 8

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).