September weather forecast
Hornbrook, CA

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Weather in September

September, the first month of the autumn in Hornbrook, is still a warm month, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 45.1°F (7.3°C).

Temperature

The arrival of September correlates with a minor temperature reduction, down from August's moderately hot 84.6°F (29.2°C) to a still warm 76.5°F (24.7°C). A pronounced dip becomes evident during the nights in September as Hornbrook logs a consistent average temperature of 45.1°F (7.3°C).

Humidity

In September, the average relative humidity is 54%.

Rainfall

In Hornbrook, during September, the rain falls for 4.3 days and regularly aggregates up to 0.39" (10mm) of precipitation. Throughout the year, in Hornbrook, there are 115.8 rainfall days, and 14.96" (380mm) of precipitation is accumulated.

Snowfall

In Hornbrook, snow does not fall in June through September.

Daylight

In September, the average length of the day in Hornbrook is 12h and 28min.
On the first day of the month, sunrise is at 6:36 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:52 pm PDT.

Sunshine

In Hornbrook, the average sunshine in September is 11h.

UV index

In Hornbrook, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

What are September temperatures in Hornbrook?

The high-temperature, in September, in Hornbrook, is 76.5°F (24.7°C), while the low-temperature averages to 45.1°F (7.3°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 86°F (30°C).

What is the average humidity in September in Hornbrook?

In September, the average relative humidity in Hornbrook, California, is 54%.

How much does it rain in Hornbrook in September?

In September, the rain falls for 4.3 days. Throughout September, 0.39" (10mm) of precipitation is accumulated.

When it does not snow in Hornbrook?

June through September are months without snowfall.

Does it snow in Hornbrook in September?

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

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

The average day length in September is 12h and 28min.

When is the sunrise / sunset in September in Hornbrook?

On the first day of September, sunrise is at 6:36 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:52 pm PDT.

How many hours of sunshine does Hornbrook have in September?

In September, the average sunshine duration in Hornbrook, California, is 11h.

What is the UV index intensity in September in Hornbrook?

In September, the average daily maximum UV index in Hornbrook, California, is 4. A UV Index reading of 3 to 5 represents 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
Hornbrook, CA

Average temperature in September - Hornbrook, CA
  • Average high temperature in September: 76.5°F

The warmest months (with the highest average high temperature) are July and August (84.6°F).
The month with the lowest average high temperature is December (41.5°F).

  • Average low temperature in September: 45.1°F

The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).

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Average pressure in September
Hornbrook, CA

Average pressure in September - Hornbrook, CA
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).

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Average wind speed in September
Hornbrook, CA

Average wind speed in September - Hornbrook, CA
  • Average wind speed in September: 4.2mph

The windiest month (with the highest average wind speed) is March (5.7mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

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Average humidity in September
Hornbrook, CA

Average humidity in September - Hornbrook, CA
  • Average humidity in September: 54%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (50%).

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Average rainfall in September
Hornbrook, CA

Average rainfall in September - Hornbrook, CA
  • Average rainfall in September: 0.39"

The wettest month (with the highest rainfall) is December (2.56").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days in September
Hornbrook, CA

Average rainfall days in September - Hornbrook, CA
  • Average rainfall days in September: 4.3 days

The month with the highest number of rainy days is March (17.2 days).
The month with the least rainy days is August (3.5 days).

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Average snowfall in September
Hornbrook, CA

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

The month with the highest snowfall is January (4.45").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Hornbrook, CA

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

The month with the highest number of snowfall days is February (6.9 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
Hornbrook, CA

Average daylight in September / Average sunshine in September - Hornbrook, CA
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 11h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in September
Hornbrook, CA

Average sunshine days in September - Hornbrook, CA
  • Average sunshine days in September: 24.5 days

The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is March (11.5 days).

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Average UV index in September
Hornbrook, CA

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in September
Hornbrook, CA

Average cloud cover in September - Hornbrook, CA
  • Average cloud cover in September: 14

The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 8).

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Average visibility in September
Hornbrook, CA

Average visibility in September - Hornbrook, CA
  • Average visibility in September: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).

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Hornbrook, California, USA

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