September weather forecast
Summerland, CA

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Weather in September

The first month of the autumn, September, is still a warm month in Summerland, California, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 77.2°F (25.1°C).

Temperature

September observes an average high-temperature of a still warm 77.2°F (25.1°C), marking an insignificant difference from August's 79.2°F (26.2°C). During the month of September, the temperature in Summerland generally drops to a low average of 60.4°F (15.8°C).

Humidity

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

Rainfall

In Summerland, in September, during 2.5 rainfall days, 0.2" (5mm) of precipitation is typically accumulated. In Summerland, during the entire year, the rain falls for 46.9 days and collects up to 7.83" (199mm) of precipitation.

Daylight

In Summerland, the average length of the day in September is 12h and 22min.
On the first day of September in Summerland, sunrise is at 6:32 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:43 pm PDT.

Sunshine

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

UV index

In Summerland, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: A daily high UV index of 5 in September leads to these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
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Frequently asked questions

What are the temperatures in Summerland in September?

In Summerland, in September, the average high-temperature is 77.2°F (25.1°C), and the average low-temperature is 60.4°F (15.8°C).

What is the average humidity in September in Summerland?

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

How much does it rain in Summerland in September?

In Summerland, in September, during 2.5 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

How many hours of daylight does Summerland have in September?

The average day length in September is 12h and 22min.

When is the sunrise / sunset in September in Summerland?

In September, on the first day of the month, sunrise is at 6:32 am and sunset at 7:24 pm. On the last day of the month, in Summerland, California, sunrise is at 6:52 am and sunset at 6:43 pm PDT.

How many hours of sunshine does Summerland have in September?

In September, the average sunshine duration is 11h.

How high is the UV index in September in Summerland?

In September, the average daily maximum UV index in Summerland is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Summerland, CA

Average temperature in September - Summerland, CA
  • Average high temperature in September: 77.2°F

The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (59.4°F).

  • Average low temperature in September: 60.4°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (45.3°F).

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Average pressure in September
Summerland, CA

Average pressure in September - Summerland, CA
  • Average pressure in September: 29.9"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.9"Hg).

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Average wind speed in September
Summerland, CA

Average wind speed in September - Summerland, CA
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in September
Summerland, CA

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

The month with the highest relative humidity is March (63%).
The months with the lowest relative humidity are October and November (53%).

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Average rainfall in September
Summerland, CA

Average rainfall in September - Summerland, CA
  • Average rainfall in September: 0.2"

The wettest months (with the highest rainfall) are February and March (1.46").
The driest months (with the least rainfall) are June and August (0.12").

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Average rainfall days in September
Summerland, CA

Average rainfall days in September - Summerland, CA
  • Average rainfall days in September: 2.5 days

The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is August (1.5 days).

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

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

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 11h and 0min

The months with the most sunshine are June and August (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 30min).

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Average sunshine days in September
Summerland, CA

Average sunshine days in September - Summerland, CA
  • Average sunshine days in September: 23.7 days

The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is February (21.8 days).

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Average UV index in September
Summerland, CA

Average UV index in September - Summerland, CA
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Summerland, CA

Average cloud cover in September - Summerland, CA
  • Average cloud cover in September: 6

The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in September
Summerland, CA

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

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