September weather forecast
Cedar Ridge, CA

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Weather in September

The first month of the autumn, September, is still a warm month in Cedar Ridge, California, with an average temperature varying between 56.5°F (13.6°C) and 83.8°F (28.8°C).

Temperature

September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a hot 89.2°F (31.8°C) in August to a warm 83.8°F (28.8°C). A sharp contrast between day and night is prevalent in September with an average nighttime temperature of 56.5°F (13.6°C).

Heat index

Throughout September, the heat index is appraised at 82.4°F (28°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.

Humidity

In Cedar Ridge, the average relative humidity in September is 40%.

Rainfall

In Cedar Ridge, in September, it is raining for 2.3 days, with typically 0.28" (7mm) of accumulated precipitation. In Cedar Ridge, during the entire year, the rain falls for 82 days and collects up to 33.11" (841mm) of precipitation.

Snowfall

In Cedar Ridge, California, snow does not fall in June through October.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 6:33 am and sunset at 7:34 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:47 pm PDT.

Sunshine

The average sunshine in September is 11.2h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 5 in September translates into these instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

An average high-temperature, in September, in Cedar Ridge, is 83.8°F (28.8°C) and the average low-temperature is 56.5°F (13.6°C). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 82.4°F (28°C).

What is the average humidity in September?

In September, the average relative humidity is 40%.

How many days does it rain in September?

In Cedar Ridge, during September, the rain falls for 2.3 days and regularly aggregates up to 0.28" (7mm) of precipitation.

When it does not snow?

June through October are months without snowfall.

What is the average length of the day in September?

The average day length in September is 12h and 26min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:33 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:47 pm PDT.

How long on average sun shines in September in Cedar Ridge?

In Cedar Ridge, the average sunshine duration in September is 11.2h.

What is the UV index reading in September?

In Cedar Ridge, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe 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
Cedar Ridge, CA

Average temperature in September - Cedar Ridge, CA
  • Average high temperature in September: 83.8°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (51.3°F).

  • Average low temperature in September: 56.5°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).

Average pressure in September
Cedar Ridge, CA

Average pressure in September - Cedar Ridge, CA
  • Average pressure in September: 29.92"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in September
Cedar Ridge, CA

Average wind speed in September - Cedar Ridge, CA
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is February (6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Cedar Ridge, CA

Average humidity in September - Cedar Ridge, CA
  • Average humidity in September: 40%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (37%).

Average rainfall in September
Cedar Ridge, CA

Average rainfall in September - Cedar Ridge, CA
  • Average rainfall in September: 0.28"

The wettest month (with the highest rainfall) is March (6.57").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in September
Cedar Ridge, CA

Average rainfall days in September - Cedar Ridge, CA
  • Average rainfall days in September: 2.3 days

The month with the highest number of rainy days is March (15.1 days).
The month with the least rainy days is July (1.1 days).

Average snowfall in September
Cedar Ridge, CA

Average snowfall in September - Cedar Ridge, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in September
Cedar Ridge, CA

Average snowfall days in September - Cedar Ridge, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is March (2.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Cedar Ridge, CA

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 11h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).

Average sunshine days in September
Cedar Ridge, CA

Average sunshine days in September - Cedar Ridge, CA
  • Average sunshine days in September: 26.9 days

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (14.8 days).

Average UV index in September
Cedar Ridge, CA

Average UV index in September - Cedar Ridge, CA
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 2).

Average cloud cover in September
Cedar Ridge, CA

Average cloud cover in September - Cedar Ridge, CA
  • Average cloud cover in September: 8

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 4).

Average visibility in September
Cedar Ridge, CA

Average visibility in September - Cedar Ridge, 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).

Cedar Ridge, California, USA

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