September weather forecast and climate
Westmorland, CA

Weather in September

The first month of the autumn, September, is still a very hot month in Westmorland, California, with temperature in the range of an average high of 100.2°F (37.9°C) and an average low of 80.2°F (26.8°C).

Temperature

In Westmorland, the average high-temperature marginally drops, from an extreme hot 107.2°F (41.8°C) in August, to a very hot 100.2°F (37.9°C). In September, the average low-temperature is 80.2°F (26.8°C).

Humidity

The average relative humidity in September is 26%.

Rainfall

In September, the rain falls for 4 days. Throughout September, 0.43" (11mm) of precipitation is accumulated. Throughout the year, in Westmorland, California, there are 31.2 rainfall days, and 3.27" (83mm) of precipitation is accumulated.

Daylight

In September, the average length of the day in Westmorland is 12.4h.

Sunshine

The average sunshine in Westmorland is 10.2h.

UV index

In September, the average daily maximum UV index in Westmorland, California, is 8. A UV Index estimate of 8 to 10 represents a very high health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 8 translate into the following recommendations:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Westmorland?

The average high-temperature, in September, in Westmorland, is 100.2°F (37.9°C), while the average low-temperature is 80.2°F (26.8°C).

What is the average humidity in September in Westmorland?

In Westmorland, the average relative humidity in September is 26%.

How many days does it rain in September in Westmorland?

In Westmorland, California, in September, during 4 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

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

The average length of the day in September in Westmorland, California, is 12.4h.

How many hours of sunshine does Westmorland have in September?

The average sunshine in September in Westmorland is 10.2h.

What is the UV index reading in September in Westmorland?

In Westmorland, California, the average daily maximum UV index in September is 8. A UV Index estimate of 8 to 10 represents a very high health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Westmorland, CA

Average temperature in September - Westmorland, CA
  • Average high temperature in September: 100.2°F

The warmest months (with the highest average high temperature) are July and August (107.2°F).
The month with the lowest average high temperature is December (67.3°F).

  • Average low temperature in September: 80.2°F

The month with the highest average low temperature is August (85.6°F).
The coldest months (with the lowest average low temperature) are January and December (50.4°F).

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Average pressure in September
Westmorland, CA

Average pressure in September - Westmorland, CA
  • Average pressure in September: 29.81"

The month with the highest atmospheric pressure is January (30.08").
The month with the lowest atmospheric pressure is June (29.78").

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Average wind speed in September
Westmorland, CA

Average wind speed in September - Westmorland, CA
  • Average wind speed in September: 6.5mph

The windiest months (with the highest average wind speed) are April and May (8.1mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).

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Average humidity in September
Westmorland, CA

Average humidity in September - Westmorland, CA
  • Average humidity in September: 26%

The month with the highest relative humidity is December (40%).
The month with the lowest relative humidity is June (22%).

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Average rainfall in September
Westmorland, CA

Average rainfall in September - Westmorland, CA
  • Average rainfall in September: 0.43"

The wettest month (with the highest rainfall) is July (0.67").
The driest month (with the least rainfall) is May (0.04").

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Average rainfall days in September
Westmorland, CA

Average rainfall days in September - Westmorland, CA
  • Average rainfall days in September: 4 days

The month with the highest number of rainy days is July (6.4 days).
The month with the least rainy days is May (0.8 days).

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

Average daylight in September / Average sunshine in September - Westmorland, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 10.2h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 7h).

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Average sunshine days in September
Westmorland, CA

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

The month with the most sunshine days is May (30.1 days).
The month with the least sunshine days is August (21.6 days).

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Average UV index in September
Westmorland, CA

Average UV index in September - Westmorland, CA
  • Average UV index in September: 8

Months with the highest UV index are July and August (UV index 9).
The month with the lowest UV index is December (UV index 4).

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Average cloud cover in September
Westmorland, CA

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

The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in September
Westmorland, CA

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

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

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