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

September weather forecast and climate
Redding, CA

September, the first month of the autumn, in Redding, is also a hot month, with average temperature ranging between max 90.3°F (32.4°C) and min 57.7°F (14.3°C).

Temperature

In September, the average high-temperature slightly decreases, from a very hot 96.6°F (35.9°C) in August, to a hot 90.3°F (32.4°C). In September, in Redding, the average low-temperature is 57.7°F (14.3°C).

Rainfall

In Redding, in September, it is raining for 2.1 days, with typically 0.6" (16.3mm) of accumulated precipitation. Throughout the year, there are 77.9 rainfall days, and 34.6" (879.5mm) of precipitation is accumulated.

Daylight

In Redding, the average length of the day in September is 12.4h.

Sunshine

In September, the average sunshine in Redding is 11.3h.

UV index

In Redding, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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 Redding?

The average high-temperature, in September, in Redding, California, is 90.3°F (32.4°C), while the average low-temperature is 57.7°F (14.3°C).

How many days does it rain in September in Redding?

In Redding, in September, it is raining for 2.1 days, with typically 0.6" (16.3mm) of accumulated precipitation.

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

In September, the average length of the day is 12.4h.

How long on average sun shines in September in Redding?

In September, the average sunshine in Redding is 11.3h.

What is the UV index intensity in September in Redding?

In Redding, California, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in September - Redding, CA
  • Average high temperature in September: 90.4°F

The warmest month (with the highest average high temperature) is July (98.4°F).
The month with the lowest average high temperature is December (54.5°F).

  • Average low temperature in September: 57.7°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is December (36.3°F).

Average rainfall in September - Redding, CA
  • Average rainfall in September: 0.6"

The wettest month (with the highest rainfall) is December (6.3").
The driest month (with the lowest rainfall) is July (0.1").

Average rainfall days in September - Redding, CA
  • Average rainfall days in September: 2.1 days

The month with the highest number of rainy days is January (13.1 days).
The month with the lowest number of rainy days is July (0.6 days).

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

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 11.3h

The month with most sunshine is July (Average sunshine: 14.5h).
The month with least sunshine is December (Average sunshine: 6.6h).

Average UV index in September - Redding, CA
  • Average UV index in September: 6

Months with the highest UV index are June and July (UV index 9).
The month with the lowest UV index is December (UV index 1).