August weather forecast
Campbell, CA

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The long roads in the crowded city of Campbell, California
The long roads in the crowded city of Campbell, California

Weather in August

August, the last month of the summer in Campbell, is another warm month, with an average temperature ranging between max 80.4°F (26.9°C) and min 55.9°F (13.3°C).

Temperature

Transitioning from July to August, Campbell observes an average high-temperature of a still warm 80.4°F (26.9°C), differing subtly from the previous month. A sharp contrast between day and night is prevalent in August with an average nighttime temperature of 55.9°F (13.3°C).

Humidity

In Campbell, the average relative humidity in August is 64%.

Rainfall

July and August are months with the least rain when the rain falls for 0.9 days and typically aggregates up to 0.04" (1mm) of rain.

Daylight

In Campbell, the average length of the day in August is 13h and 33min.
On the first day of August, sunrise is at 6:13 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:37 pm PDT.

Sunshine

The average sunshine in August is 12h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature?

In August, the average high-temperature and low-temperature are 80.4°F (26.9°C) and 55.9°F (13.3°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in July is computed to be 82.4°F (28°C).

What is the average humidity in August?

In August, the average relative humidity is 64%.

What is the driest month?

July and August are months with the least rain when the rain falls for 0.9 days and typically aggregates up to 0.04" (1mm) of rain.

How much does it rain in August?

In Campbell, in August, it is raining for 0.9 days, with typically 0.04" (1mm) of accumulated precipitation.

What is the average length of the day in August?

In Campbell, the average day length in August is 13h and 33min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:13 am and sunset at 8:15 pm. On the last day of the month, in Campbell, sunrise is at 6:38 am and sunset at 7:37 pm PDT.

How many hours of sunshine does Campbell have in August?

The average sunshine duration in August is 12h.

When is the highest UV index?

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

What is the UV index reading in August?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from 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 August
Campbell, CA

Average temperature in August - Campbell, CA
  • Average high temperature in August: 80.4°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is December (56.7°F).

  • Average low temperature in August: 55.9°F

The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).

Average pressure in August
Campbell, CA

Average pressure in August - Campbell, CA
  • Average pressure in August: 29.93"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June and September (29.92"Hg).

Average wind speed in August
Campbell, CA

Average wind speed in August - Campbell, CA
  • Average wind speed in August: 4.5mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest months (with the lowest average wind speed) are August, September, October and November (4.5mph).

Average humidity in August
Campbell, CA

Average humidity in August - Campbell, CA
  • Average humidity in August: 64%

The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July and September (62%).

Average rainfall in August
Campbell, CA

Average rainfall in August - Campbell, CA
  • Average rainfall in August: 0.04"

The wettest month (with the highest rainfall) is February (2.2").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in August
Campbell, CA

Average rainfall days in August - Campbell, CA
  • Average rainfall days in August: 0.9 days

The month with the highest number of rainy days is March (12.5 days).
The month with the least rainy days is August (0.9 days).

Average daylight in August /
Average sunshine in August
Campbell, CA

Average daylight in August / Average sunshine in August - Campbell, CA
  • Average daylight in August: 13h and 3min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 12h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

Average sunshine days in August
Campbell, CA

Average sunshine days in August - Campbell, CA
  • Average sunshine days in August: 29.2 days

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (17.3 days).

Average UV index in August
Campbell, CA

Average UV index in August - Campbell, CA
  • Average UV index in August: 6

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

Average cloud cover in August
Campbell, CA

Average cloud cover in August - Campbell, CA
  • Average cloud cover in August: 7

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 6).

Average visibility in August
Campbell, CA

Average visibility in August - Campbell, 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).

Campbell, California, USA

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