September weather forecast and climate
Lompoc, CA

Rows of a colorful flower garden and varying flower petal colors in a field in Lompoc, California
Rows of a colorful flower garden and varying flower petal colors in a field in Lompoc, California

Weather in September

September, the first month of the autumn, in Lompoc, is also a moderately hot month, with temperature in the range of an average low of 60.1°F (15.6°C) and an average high of 74.7°F (23.7°C).

Temperature

With an average high-temperature of 74.7°F (23.7°C) and an average low-temperature of 60.1°F (15.6°C), September is the warmest month.

Humidity

In September, the average relative humidity in Lompoc is 67%.

Rainfall

In Lompoc, it is raining for 2 days, with typically 0.08" (2mm) of accumulated precipitation. Throughout the year, in Lompoc, there are 43.4 rainfall days, and 7.09" (180mm) of precipitation is accumulated.

Daylight

In Lompoc, the average length of the day is 12.4h.

Sunshine

In Lompoc, the average sunshine is 11.2h.

UV index

In Lompoc, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 warmest month in Lompoc?

The warmest month in Lompoc is September, with an average high-temperature of 74.7°F (23.7°C) and an average low-temperature of 60.1°F (15.6°C).

What is the temperature in September in Lompoc?

In Lompoc, California, in September, the average high-temperature is 74.7°F (23.7°C), and the average low-temperature is 60.1°F (15.6°C).

What is the average humidity in September in Lompoc?

The average relative humidity in September in Lompoc is 67%.

How much does it rain in Lompoc in September?

In September, in Lompoc, California, the rain falls for 2 days. Throughout September, 0.08" (2mm) of precipitation is accumulated.

How many hours of daylight does Lompoc have in September?

The average length of the day in September in Lompoc is 12.4h.

How many hours of sunshine does Lompoc have in September?

The average sunshine in September is 11.2h.

What is the UV index intensity in September in Lompoc?

In Lompoc, California, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in September
Lompoc, CA

Average temperature in September - Lompoc, CA
  • Average high temperature in September: 74.7°F

The warmest month (with the highest average high temperature) is September (74.7°F).
The month with the lowest average high temperature is December (61.3°F).

  • Average low temperature in September: 60.1°F

The month with the highest average low temperature is September (60.1°F).
The coldest month (with the lowest average low temperature) is February (49.1°F).

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Average pressure in September
Lompoc, CA

Average pressure in September - Lompoc, CA
  • Average pressure in September: 29.91"

The month with the highest atmospheric pressure is January (30.11").
Months with the lowest atmospheric pressure are June and September (29.91").

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Average wind speed in September
Lompoc, CA

Average wind speed in September - Lompoc, CA
  • Average wind speed in September: 8.8mph

The windiest month (with the highest average wind speed) is May (10.6mph).
The calmest month (with the lowest average wind speed) is January (7.9mph).

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Average humidity in September
Lompoc, CA

Average humidity in September - Lompoc, CA
  • Average humidity in September: 67%

Months with the highest relative humidity are June, July and August (71%).
The month with the lowest relative humidity is November (63%).

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Average rainfall in September
Lompoc, CA

Average rainfall in September - Lompoc, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is January (1.5").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in September
Lompoc, CA

Average rainfall days in September - Lompoc, CA
  • Average rainfall days in September: 2 days

The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.2 days).

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

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

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 11.2h

Months with the most sunshine are June, July and August (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.4h).

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Average sunshine days in September
Lompoc, CA

Average sunshine days in September - Lompoc, CA
  • Average sunshine days in September: 27.3 days

The month with the most sunshine days is August (28.6 days).
The month with the least sunshine days is February (21.3 days).

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Average UV index in September
Lompoc, CA

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

The month with the highest UV index is August (UV index 6).
Months with the lowest UV index are January, February, March, April, November and December (UV index 4).

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Average cloud cover in September
Lompoc, CA

Average cloud cover in September - Lompoc, CA
  • Average cloud cover in September: 9

The month with the most cloud cover is March (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 9).

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Average visibility in September
Lompoc, CA

Average visibility in September - Lompoc, 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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