September weather forecast
Lake Isabella, CA

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Weather in September

The first month of the autumn, September, is still a warm month in Lake Isabella, California, with an average temperature fluctuating between 79.3°F (26.3°C) and 54.5°F (12.5°C).

Temperature

September is characterized by a mild reduction in the average high-temperature, from 85.3°F (29.6°C) in August to a still warm 79.3°F (26.3°C). A noteworthy thermal contrast characterizes Lake Isabella's September nights, with temperatures averaging at a fresh 54.5°F (12.5°C).

Humidity

In Lake Isabella, the average relative humidity in September is 35%.

Rainfall

In Lake Isabella, during September, the rain falls for 3.4 days and regularly aggregates up to 0.24" (6mm) of precipitation. Throughout the year, in Lake Isabella, California, there are 65.1 rainfall days, and 12.28" (312mm) of precipitation is accumulated.

Snowfall

In Lake Isabella, snow does not fall in June through October.

Daylight

In Lake Isabella, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:20 pm. On the last day of September, sunrise is at 6:48 am and sunset at 6:38 pm PDT.

Sunshine

In Lake Isabella, the average sunshine in September is 10.9h.

UV index

In September, the average daily maximum UV index in Lake Isabella is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 5 in September translates into this advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What are the temperatures in Lake Isabella in September?

September temperatures in Lake Isabella vary between a high-temperature of 79.3°F (26.3°C) and a low-temperature of 54.5°F (12.5°C).

What is the average humidity in September in Lake Isabella?

In September, the average relative humidity in Lake Isabella, California, is 35%.

How many days does it rain in September in Lake Isabella?

In Lake Isabella, California, in September, during 3.4 rainfall days, 0.24" (6mm) of precipitation is typically accumulated.

When it does not snow in Lake Isabella?

June through October are months without snowfall.

What is the average length of the day in September in Lake Isabella?

In September, the average day length in Lake Isabella, California, is 12h and 23min.

What time are sunrise and sunset in September in Lake Isabella?

On the first day of September, sunrise is at 6:26 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:38 pm PDT.

How long on average sun shines in September in Lake Isabella?

In September, the average sunshine duration in Lake Isabella is 10.9h.

What is the UV index intensity in September in Lake Isabella?

The average daily maximum UV index in September in Lake Isabella is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
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
Lake Isabella, CA

Average temperature in September - Lake Isabella, CA
  • Average high temperature in September: 79.3°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is December (49.3°F).

  • Average low temperature in September: 54.5°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (32.4°F).

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Average pressure in September
Lake Isabella, CA

Average pressure in September - Lake Isabella, CA
  • Average pressure in September: 29.89"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in September
Lake Isabella, CA

Average wind speed in September - Lake Isabella, CA
  • Average wind speed in September: 5.4mph

The windiest month (with the highest average wind speed) is May (7.4mph).
The calmest month (with the lowest average wind speed) is September (5.4mph).

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Average humidity in September
Lake Isabella, CA

Average humidity in September - Lake Isabella, CA
  • Average humidity in September: 35%

The month with the highest relative humidity is February (61%).
The month with the lowest relative humidity is August (31%).

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Average rainfall in September
Lake Isabella, CA

Average rainfall in September - Lake Isabella, CA
  • Average rainfall in September: 0.24"

The wettest month (with the highest rainfall) is January (2.24").
The driest month (with the least rainfall) is June (0.2").

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Average rainfall days in September
Lake Isabella, CA

Average rainfall days in September - Lake Isabella, CA
  • Average rainfall days in September: 3.4 days

The month with the highest number of rainy days is March (10.1 days).
The month with the least rainy days is June (1.5 days).

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Average snowfall in September
Lake Isabella, CA

Average snowfall in September - Lake Isabella, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Lake Isabella, CA

Average snowfall days in September - Lake Isabella, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Lake Isabella, CA

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

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 10h and 5min

The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 6h and 24min).

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Average sunshine days in September
Lake Isabella, CA

Average sunshine days in September - Lake Isabella, CA
  • Average sunshine days in September: 25.9 days

The month with the most sunshine days is June (27.4 days).
The month with the least sunshine days is February (19.2 days).

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Average UV index in September
Lake Isabella, CA

Average UV index in September - Lake Isabella, CA
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are November and December (UV index 2).

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Average cloud cover in September
Lake Isabella, CA

Average cloud cover in September - Lake Isabella, CA
  • Average cloud cover in September: 6

The month with the most cloud cover is March (Cloud cover 31).
The months with the least cloud cover are August and September (Cloud cover 6).

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Average visibility in September
Lake Isabella, CA

Average visibility in September - Lake Isabella, 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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Lake Isabella, California, USA

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