August weather forecast
Etiwanda, CA

Share

Weather in August

The last month of the summer, August, is also a hot month in Etiwanda, California, with an average temperature fluctuating between 91.8°F (33.2°C) and 66.6°F (19.2°C).

Temperature

With average temperatures fluctuating between a high of 91.8°F (33.2°C) and a low of 66.6°F (19.2°C), August stands out as the warmest month.

Heat index

During August, the heat index is calculated to be a hot 93.2°F (34°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

With an average relative humidity of 41%, August is the least humid month.

Rainfall

In Etiwanda, in August, during 1.9 rainfall days, 0.12" (3mm) of precipitation is typically accumulated. In Etiwanda, during the entire year, the rain falls for 42.3 days and collects up to 4.53" (115mm) of precipitation.

Snowfall

January, March through December are months without snowfall.

Daylight

In August, the average length of the day is 13h and 23min.
On the first day of August, sunrise is at 6:01 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:16 pm PDT.

Sunshine

In August, the average sunshine in Etiwanda is 12h.

UV index

The months with the highest UV index are July and August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In August, the maximum UV index of 7 suggests these recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

August is the month when Etiwanda sees the average highest temperatures, with a high of 91.8°F (33.2°C) and a low of 66.6°F (19.2°C).

How hot does it get in August?

An average high-temperature, in August, in Etiwanda, is 91.8°F (33.2°C) and the average low-temperature is 66.6°F (19.2°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is calculated to be 93.2°F (34°C).

What is the least humid month?

The least humid month is August, with an average relative humidity of 41%.

What is the average humidity in August?

In August, the average relative humidity is 41%.

How much does it rain in August?

In Etiwanda, during August, the rain falls for 1.9 days and regularly aggregates up to 0.12" (3mm) of precipitation.

When it does not snow?

In Etiwanda, snow does not fall in January, March through December.

How many hours of daylight does Etiwanda have in August?

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

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:16 pm PDT.

How long on average sun shines in August?

The average sunshine duration in August is 12h.

What is the month with the highest UV index?

July and August, with an average maximum UV index of 7, are months with the highest UV index.

How high is the UV index in August in Etiwanda?

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

Average temperature in August
Etiwanda, CA

Average temperature in August - Etiwanda, CA
  • Average high temperature in August: 91.8°F

The warmest month (with the highest average high temperature) is August (91.8°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in August: 66.6°F

The month with the highest average low temperature is August (66.6°F).
The coldest months (with the lowest average low temperature) are February and December (45.3°F).

Average pressure in August
Etiwanda, CA

Average pressure in August - Etiwanda, CA
  • Average pressure in August: 29.88"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in August
Etiwanda, CA

Average wind speed in August - Etiwanda, CA
  • Average wind speed in August: 4.8mph

The windiest month (with the highest average wind speed) is May (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

Average humidity in August
Etiwanda, CA

Average humidity in August - Etiwanda, CA
  • Average humidity in August: 41%

The months with the highest relative humidity are February, March and May (53%).
The month with the lowest relative humidity is August (41%).

Average rainfall in August
Etiwanda, CA

Average rainfall in August - Etiwanda, CA
  • Average rainfall in August: 0.12"

The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in August
Etiwanda, CA

Average rainfall days in August - Etiwanda, CA
  • Average rainfall days in August: 1.9 days

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.9 days).

Average snowfall days in August
Etiwanda, CA

Average snowfall days in August - Etiwanda, CA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in August / Average sunshine in August - Etiwanda, 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 month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).

Average sunshine days in August
Etiwanda, CA

Average sunshine days in August - Etiwanda, CA
  • Average sunshine days in August: 26.8 days

The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (22.8 days).

Average UV index in August
Etiwanda, CA

Average UV index in August - Etiwanda, CA
  • Average UV index in August: 7

The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in August
Etiwanda, CA

Average cloud cover in August - Etiwanda, CA
  • Average cloud cover in August: 5

The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in August
Etiwanda, CA

Average visibility in August - Etiwanda, 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).

Etiwanda, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location