August weather forecast
Signal Hill, CA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Signal Hill, California, with an average temperature fluctuating between 64.9°F (18.3°C) and 79.5°F (26.4°C).

Temperature

In Signal Hill, the month of August is known for its highest average temperatures, reaching a high of 79.5°F (26.4°C) and a low of 64.9°F (18.3°C).

Humidity

The average relative humidity in August in Signal Hill, California, is 65%.

Rainfall

In August, the rain falls for 2.6 days. Throughout August, 0.2" (5mm) of precipitation is accumulated. Throughout the year, in Signal Hill, there are 47.2 rainfall days, and 5.59" (142mm) of precipitation is accumulated.

Daylight

The average length of the day in August is 13h and 22min.
On the first day of the month, sunrise is at 6:05 am and sunset at 7:52 pm. On the last day of August, sunrise is at 6:26 am and sunset at 7:19 pm PDT.

Sunshine

The months with the most sunshine are July and August, with an average of 12h of sunshine.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

What month is the hottest in Signal Hill?

August is the warmest month of the year in Signal Hill, registering average temperatures as high as 79.5°F (26.4°C) and as low as 64.9°F (18.3°C).

What are the temperatures in Signal Hill in August?

In Signal Hill, in August, the average high-temperature is 79.5°F (26.4°C), and the average low-temperature is 64.9°F (18.3°C).

What is the average humidity in August in Signal Hill?

In Signal Hill, the average relative humidity in August is 65%.

How many days does it rain in August in Signal Hill?

In Signal Hill, in August, it is raining for 2.6 days, with typically 0.2" (5mm) of accumulated precipitation.

What is the average length of the day in August in Signal Hill?

In August, the average day length in Signal Hill is 13h and 22min.

When are sunrise and sunset in August in Signal Hill?

In August, on the first day of the month, sunrise is at 6:05 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:19 pm PDT.

What are the months with the most sunshine in Signal Hill?

July and August, with an average of 12h of sunshine, are months with the most sunshine in Signal Hill, California.

How many hours of sunshine does Signal Hill have in August?

In Signal Hill, California, the average sunshine duration in August is 12h.

What are the months with the highest UV index in Signal Hill?

June through September, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in August in Signal Hill?

In August, the average daily maximum UV index in Signal Hill is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Signal Hill, CA

Average temperature in August - Signal Hill, CA
  • Average high temperature in August: 79.5°F

The warmest month (with the highest average high temperature) is August (79.5°F).
The month with the lowest average high temperature is December (63.5°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (52°F).

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Average pressure in August
Signal Hill, CA

Average pressure in August - Signal Hill, CA
  • Average pressure in August: 29.9"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).

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Average wind speed in August
Signal Hill, CA

Average wind speed in August - Signal Hill, CA
  • Average wind speed in August: 5.2mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (5mph).

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Average humidity in August
Signal Hill, CA

Average humidity in August - Signal Hill, CA
  • Average humidity in August: 65%

The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (55%).

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Average rainfall in August
Signal Hill, CA

Average rainfall in August - Signal Hill, CA
  • Average rainfall in August: 0.2"

The wettest month (with the highest rainfall) is December (1.14").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in August
Signal Hill, CA

Average rainfall days in August - Signal Hill, CA
  • Average rainfall days in August: 2.6 days

The month with the highest number of rainy days is March (6 days).
The month with the least rainy days is June (1.8 days).

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Average daylight in August /
Average sunshine in August
Signal Hill, CA

Average daylight in August / Average sunshine in August - Signal Hill, CA
  • Average daylight in August: 13h 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: 10h and 0min).

  • Average sunshine in August: 12h and 0min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).

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Average sunshine days in August
Signal Hill, CA

Average sunshine days in August - Signal Hill, CA
  • Average sunshine days in August: 24.5 days

The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is June (20.8 days).

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Average UV index in August
Signal Hill, CA

Average UV index in August - Signal Hill, CA
  • Average UV index in August: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in August
Signal Hill, CA

Average cloud cover in August - Signal Hill, CA
  • Average cloud cover in August: 7

The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in August
Signal Hill, CA

Average visibility in August - Signal Hill, CA
  • Average visibility in August: 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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Signal Hill, California, USA

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