August weather forecast
Sierra Madre, CA

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Weather in August

August, the last month of the summer in Sierra Madre, is also a hot month, with an average temperature fluctuating between 64.8°F (18.2°C) and 88.2°F (31.2°C).

Temperature

The highest temperatures are recorded in August, with averages reaching a high of 88.2°F (31.2°C) and a low of 64.8°F (18.2°C).

Heat index

In August, the heat index is calculated to be a tropical 91.4°F (33°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

The average relative humidity in August in Sierra Madre is 48%.

Rainfall

In Sierra Madre, in August, it is raining for 2.6 days, with typically 0.16" (4mm) of accumulated precipitation. In Sierra Madre, during the entire year, the rain falls for 48.7 days and collects up to 7.48" (190mm) of precipitation.

Daylight

The average length of the day in August is 13h and 23min.
On the first day of the month, sunrise is at 6:03 am and sunset at 7:53 pm. On the last day of August, sunrise is at 6:25 am and sunset at 7:18 pm PDT.

Sunshine

In Sierra Madre, the average sunshine in August is 12h.

UV index

The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 6 in August translates into this advice:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest?

Sierra Madre, California, registers the average highest temperatures during August, with peaks of 88.2°F (31.2°C) and lows of 64.8°F (18.2°C).

How hot does it get in August?

In Sierra Madre, in August, the average high-temperature is 88.2°F (31.2°C), and the average low-temperature is 64.8°F (18.2°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 91.4°F (33°C).

What is the average humidity in August?

In August, the average relative humidity is 48%.

How many days does it rain in August?

In August, the rain falls for 2.6 days. Throughout August, 0.16" (4mm) of precipitation is accumulated.

How many hours of daylight does Sierra Madre have in August?

The average day length in August is 13h and 23min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:03 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:18 pm PDT.

How many hours of sunshine does Sierra Madre have in August?

In Sierra Madre, the average sunshine duration in August is 12h.

What are the months with the highest UV index?

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

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe 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
Sierra Madre, CA

Average temperature in August - Sierra Madre, CA
  • Average high temperature in August: 88.2°F

The warmest month (with the highest average high temperature) is August (88.2°F).
The month with the lowest average high temperature is December (62.1°F).

  • Average low temperature in August: 64.8°F

The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is December (46.2°F).

Average pressure in August
Sierra Madre, CA

Average pressure in August - Sierra Madre, CA
  • Average pressure in August: 29.89"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in August
Sierra Madre, CA

Average wind speed in August - Sierra Madre, CA
  • Average wind speed in August: 4.6mph

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

Average humidity in August
Sierra Madre, CA

Average humidity in August - Sierra Madre, CA
  • Average humidity in August: 48%

The months with the highest relative humidity are March, May and June (56%).
The month with the lowest relative humidity is November (46%).

Average rainfall in August
Sierra Madre, CA

Average rainfall in August - Sierra Madre, CA
  • Average rainfall in August: 0.16"

The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in August
Sierra Madre, CA

Average rainfall days in August - Sierra Madre, CA
  • Average rainfall days in August: 2.6 days

The month with the highest number of rainy days is March (6.5 days).
The month with the least rainy days is June (1.3 days).

Average daylight in August /
Average sunshine in August
Sierra Madre, CA

Average daylight in August / Average sunshine in August - Sierra Madre, 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 January, February and December (Average sunshine: 6h and 54min).

Average sunshine days in August
Sierra Madre, CA

Average sunshine days in August - Sierra Madre, CA
  • Average sunshine days in August: 26.2 days

The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is February (22 days).

Average UV index in August
Sierra Madre, CA

Average UV index in August - Sierra Madre, CA
  • Average UV index in August: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in August
Sierra Madre, CA

Average cloud cover in August - Sierra Madre, CA
  • Average cloud cover in August: 5

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 5).

Average visibility in August
Sierra Madre, CA

Average visibility in August - Sierra Madre, 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).

Sierra Madre, California, USA

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