September weather forecast and climate
Hornbrook, CA

Weather in September

The first month of the autumn, September, is still a warm month in Hornbrook, California, with average temperature fluctuating between 45.1°F (7.3°C) and 76.5°F (24.7°C).

Temperature

In Hornbrook, the average high-temperature marginally drops, from a moderately hot 84.6°F (29.2°C) in August, to a still warm 76.5°F (24.7°C). The average low-temperature, in Hornbrook, is 45.1°F (7.3°C).

Humidity

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

Rainfall

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

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September is 12.5h.

Sunshine

In September, the average sunshine is 11h.

UV index

In Hornbrook, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in September in Hornbrook?

In September, the average high-temperature is 76.5°F (24.7°C), and the average low-temperature is 45.1°F (7.3°C).

What is the average humidity in September in Hornbrook?

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

How many days does it rain in September in Hornbrook?

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

Does it snow in Hornbrook in September?

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

When it does not snow in Hornbrook?

June through September are months without snowfall.

How many hours of daylight does Hornbrook have in September?

In September, the average length of the day in Hornbrook, California, is 12.5h.

How many hours of sunshine does Hornbrook have in September?

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

What is the UV index intensity in September in Hornbrook?

In Hornbrook, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.

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"

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

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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").
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).
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: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 11h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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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).
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

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

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