August weather forecast
Lake Arrowhead, CA

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Weather in August

August, the last month of the summer in Lake Arrowhead, is another hot month, with an average temperature varying between 88.3°F (31.3°C) and 66.4°F (19.1°C).

Temperature

In Lake Arrowhead, the warmest months are July and August, registering an average high-temperature of 88.3°F (31.3°C).

Humidity

With an average relative humidity of 32%, August is the least humid month in Lake Arrowhead.

Rainfall

In Lake Arrowhead, California, during August, the rain falls for 2 days and regularly aggregates up to 0.12" (3mm) of precipitation. Throughout the year, in Lake Arrowhead, there are 42.2 rainfall days, and 5.55" (141mm) of precipitation is accumulated.

Snowfall

In Lake Arrowhead, California, snow does not fall in June through October.

Daylight

In Lake Arrowhead, the average length of the day in August is 13h and 23min.
On the first day of the month, sunrise is at 6:00 am and sunset at 7:49 pm. On the last day of August, in Lake Arrowhead, sunrise is at 6:22 am and sunset at 7:15 pm PDT.

Sunshine

The average sunshine in August is 12h.

UV index

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In August, the maximum UV index of 6 transforms into these recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Feb 9, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the warmest month in Lake Arrowhead?

The warmest period in Lake Arrowhead is usually observed in July and August, with the average high-temperature peaking at 88.3°F (31.3°C).

How hot is August in Lake Arrowhead?

In Lake Arrowhead, in August, the average high-temperature is 88.3°F (31.3°C), and the average low-temperature is 66.4°F (19.1°C).

What is the least humid month in Lake Arrowhead?

The least humid month is August, with an average relative humidity of 32%.

What is the average humidity in August in Lake Arrowhead?

In August, the average relative humidity is 32%.

How many days does it rain in August in Lake Arrowhead?

In August, in Lake Arrowhead, California, the rain falls for 2 days. Throughout August, 0.12" (3mm) of precipitation is accumulated.

When it does not snow in Lake Arrowhead?

In Lake Arrowhead, snow does not fall in June through October.

How many hours of daylight does Lake Arrowhead have in August?

In Lake Arrowhead, the average day length in August is 13h and 23min.

When is the sunrise / sunset in August in Lake Arrowhead?

On the first day of August in Lake Arrowhead, California, sunrise is at 6:00 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:15 pm PDT.

How long on average sun shines in August in Lake Arrowhead?

The average sunshine duration in August is 12h.

What is the UV index intensity in August in Lake Arrowhead?

The average daily maximum UV index in August in Lake Arrowhead is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Lake Arrowhead, CA

Average temperature in August - Lake Arrowhead, CA
  • Average high temperature in August: 88.3°F

The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is December (53.4°F).

  • Average low temperature in August: 66.4°F

The month with the highest average low temperature is August (66.4°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).

Average pressure in August
Lake Arrowhead, CA

Average pressure in August - Lake Arrowhead, CA
  • Average pressure in August: 29.85"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in August
Lake Arrowhead, CA

Average wind speed in August - Lake Arrowhead, CA
  • Average wind speed in August: 5.6mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).

Average humidity in August
Lake Arrowhead, CA

Average humidity in August - Lake Arrowhead, CA
  • Average humidity in August: 32%

The months with the highest relative humidity are February and December (52%).
The month with the lowest relative humidity is August (32%).

Average rainfall in August
Lake Arrowhead, CA

Average rainfall in August - Lake Arrowhead, CA
  • Average rainfall in August: 0.12"

The wettest month (with the highest rainfall) is February (1.1").
The driest month (with the least rainfall) is June (0.08").

Average rainfall days in August
Lake Arrowhead, CA

Average rainfall days in August - Lake Arrowhead, CA
  • Average rainfall days in August: 2 days

The month with the highest number of rainy days is March (5.7 days).
The month with the least rainy days is June (1.2 days).

Average snowfall in August
Lake Arrowhead, CA

Average snowfall in August - Lake Arrowhead, CA
  • Average snowfall in August: 0"

The month with the highest snowfall is April (4.09").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August
Lake Arrowhead, CA

Average snowfall days in August - Lake Arrowhead, CA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Lake Arrowhead, CA

Average daylight in August / Average sunshine in August - Lake Arrowhead, 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: 9h and 54min).

  • Average sunshine in August: 12h and 0min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

Average sunshine days in August
Lake Arrowhead, CA

Average sunshine days in August - Lake Arrowhead, CA
  • Average sunshine days in August: 26.4 days

The month with the most sunshine days is June (27.9 days).
The month with the least sunshine days is February (21.8 days).

Average UV index in August
Lake Arrowhead, CA

Average UV index in August - Lake Arrowhead, CA
  • Average UV index in August: 6

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in August
Lake Arrowhead, CA

Average cloud cover in August - Lake Arrowhead, CA
  • Average cloud cover in August: 5

The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in August
Lake Arrowhead, CA

Average visibility in August - Lake Arrowhead, 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).

Lake Arrowhead, California, USA

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