Sacramento
California, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Sacramento, CA

The State Capitol Building in Sacramento, California, under the perfect blue sky
The State Capitol Building in Sacramento, California, under the perfect blue sky
The last month of the summer, August, is another tropical month in Sacramento, California, with average temperature varying between 91.2°F (32.9°C) and 57.9°F (14.4°C).

Temperature

In August, the average high-temperature is practically the same as in July - a still hot 91.2°F (32.9°C). In August, in Sacramento, the average low-temperature is 57.9°F (14.4°C).

Heat index

In August, the average heat index is calculated to a sweltering 100°F (37.8°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, pregnancy, wind), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In August, the average relative humidity is 55.7%.

Rainfall

Months with rainfall in Sacramento are January through June, August through December. August is the first month it rains in Sacramento. Throughout August, in the average 0.3 rainfall days, it receives 0.1" (1.3mm) of precipitation. In Sacramento, during the entire year, the rain falls for 60.1 days and collects up to 18.5" (470.5mm) of precipitation.

Daylight

In August, the average length of the day in Sacramento, California, is 13.6h.

Sunshine

In Sacramento, the average sunshine in August is 13.1h.

UV index

In Sacramento, the average daily maximum UV index in August is 8. A UV Index reading of 8 to 10 represents a very high health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 8 in August transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in August in Sacramento?

In August, in Sacramento, California, the average high-temperature is 91.2°F (32.9°C), and the average low-temperature is 57.9°F (14.4°C). The average heat index (a.k.a. 'real feel', 'feels like'), that combines air temperature and relative humidity, in August is estimated at 100°F (37.8°C).

What is the average humidity in August in Sacramento?

In August, the average relative humidity is 55.7%.

When does it start raining in Sacramento?

August is the first month it rains in Sacramento, California. Throughout August, in the average 0.3 rainfall days, it receives 0.1" (1.3mm) of precipitation.

What is the average length of the day in August in Sacramento?

The average length of the day in August in Sacramento, California, is 13.6h.

How many hours of sunshine does Sacramento have in August?

In Sacramento, California, the average sunshine in August is 13.1h.

How high is the UV index in August in Sacramento?

In Sacramento, California, the average daily maximum UV index in August is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in August - Sacramento, CA
  • Average high temperature in August: 32.9°C

The warmest month (with the highest average high temperature) is July (33.4°C).
The month with the lowest average high temperature is January (12.1°C).

  • Average low temperature in August: 14.4°C

The month with the highest average low temperature is July (14.7°C).
The coldest month (with the lowest average low temperature) is December (3.6°C).

Average humidity in August - Sacramento, CA
  • Average humidity in August: 55.7%

The month with the highest relative humidity is January (83.3%).
The month with the lowest relative humidity is July (53.2%).

Average rainfall in August - Sacramento, CA
  • Average rainfall in August: 1.3mm

The wettest month (with the highest rainfall) is January (92.5mm).
The driest month (with the lowest rainfall) is July (0mm).

Average rainfall days in August - Sacramento, CA
  • Average rainfall days in August: 0.3 days

The month with the highest number of rainy days is January (10.3 days).
The month with the lowest number of rainy days is July (0 days).

Average daylight in August / Average sunshine in August - Sacramento, CA
  • Average daylight in August: 13.6h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in August: 13.1h

The month with most sunshine is July (Average sunshine: 14.2h).
The month with least sunshine is December (Average sunshine: 4.6h).

Average UV index in August - Sacramento, CA
  • Average UV index in August: 8

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 2).