September weather forecast
Glencoe, CA

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Weather in September

The first month of the autumn, September, is still a warm month in Glencoe, California, with an average temperature varying between 54°F (12.2°C) and 79.9°F (26.6°C).

Temperature

In Glencoe, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's 85.3°F (29.6°C) to a still moderately hot 79.9°F (26.6°C). September in Glencoe presents a pronounced difference from daytime highs, with a consistent average low-temperature of 54°F (12.2°C).

Humidity

The average relative humidity in September is 39%.

Rainfall

In Glencoe, during September, the rain falls for 3.5 days and regularly aggregates up to 0.31" (8mm) of precipitation. Throughout the year, in Glencoe, there are 78.6 rainfall days, and 31.18" (792mm) of precipitation is accumulated.

Snowfall

In Glencoe, California, snow does not fall in June through September.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of September, sunrise is at 6:32 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:46 pm PDT.

Sunshine

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

UV index

The average daily maximum UV index in September in Glencoe is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: In September, a regular UV index of 4 translates into these guidelines:
Take precautions - Protection against sun damage is advised. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Boost your sun resistance with garments that are densely woven yet spacious. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Frequently asked questions

What is the average September temperature in Glencoe?

In Glencoe, in September, the average high-temperature is 79.9°F (26.6°C), and the average low-temperature is 54°F (12.2°C).

What is the average humidity in September in Glencoe?

In September, the average relative humidity in Glencoe, California, is 39%.

How much does it rain in Glencoe in September?

In Glencoe, California, in September, it is raining for 3.5 days, with typically 0.31" (8mm) of accumulated precipitation.

When it does not snow in Glencoe?

In Glencoe, California, snow does not fall in June through September.

Does it snow in Glencoe in September?

In Glencoe, in September, it doesn't snow. In October, it regularly snows.

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

The average day length in September in Glencoe, California, is 12h and 25min.

What time are sunrise and sunset in September in Glencoe?

On the first day of September in Glencoe, California, sunrise is at 6:32 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:46 pm PDT.

How long on average sun shines in September in Glencoe?

In September, the average sunshine duration in Glencoe is 11.3h.

What is the UV index reading in September in Glencoe?

The average daily maximum UV index in September in Glencoe is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Glencoe, CA

Average temperature in September - Glencoe, CA
  • Average high temperature in September: 79.9°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (48.6°F).

  • Average low temperature in September: 54°F

The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).

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Average pressure in September
Glencoe, CA

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in September
Glencoe, CA

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

The windiest month (with the highest average wind speed) is February (6.2mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in September
Glencoe, CA

Average humidity in September - Glencoe, CA
  • Average humidity in September: 39%

The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July and August (37%).

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Average rainfall in September
Glencoe, CA

Average rainfall in September - Glencoe, CA
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is March (6.14").
The driest months (with the least rainfall) are July and August (0.08").

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Average rainfall days in September
Glencoe, CA

Average rainfall days in September - Glencoe, CA
  • Average rainfall days in September: 3.5 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (1.8 days).

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Average snowfall in September
Glencoe, CA

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

The month with the highest snowfall is March (18.98").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Glencoe, CA

Average snowfall days in September - Glencoe, CA
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is March (6.4 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

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

  • Average sunshine in September: 11h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

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Average sunshine days in September
Glencoe, CA

Average sunshine days in September - Glencoe, CA
  • Average sunshine days in September: 25.7 days

The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (14.3 days).

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Average UV index in September
Glencoe, CA

Average UV index in September - Glencoe, CA
  • Average UV index in September: 4

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

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Average cloud cover in September
Glencoe, CA

Average cloud cover in September - Glencoe, CA
  • Average cloud cover in September: 7

The month with the most cloud cover is March (Cloud cover 37).
The months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in September
Glencoe, CA

Average visibility in September - Glencoe, 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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Glencoe, California, USA

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