August weather forecast and climate
Montebello, CA

Weather in August

The last month of the summer, August, is a tropical month in Montebello, California, with average temperature ranging between min 65.8°F (18.8°C) and max 86.5°F (30.3°C).

Temperature

With an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 65.8°F (18.8°C), August is the warmest month.

Heat index

The average heat index is calculated to a hot 90°F (32.2°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 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, clothing, pregnancy, and wind affect individual temperature impact. 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 particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Montebello, California, the average relative humidity is 54%.

Rainfall

In August, the rain falls for 1.4 days. Throughout August, 0.08" (2mm) of precipitation is accumulated. In Montebello, California, during the entire year, the rain falls for 40.9 days and collects up to 6.18" (157mm) of precipitation.

Daylight

In Montebello, California, the average length of the day in August is 13.4h.

Sunshine

July and August, with an average of 12h of sunshine, are months with the most sunshine in Montebello.

UV index

With an average maximum UV index of 7, August is the month with the highest UV index in Montebello. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: In August, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the warmest month in Montebello?

The warmest month in Montebello is August, with an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 65.8°F (18.8°C).

What is the temperature in August in Montebello?

In August, the average high-temperature is 86.5°F (30.3°C), and the average low-temperature is 65.8°F (18.8°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that calculates temperature value influenced by the moisture in the air, is calculated to 90°F (32.2°C).

What is the average humidity in August in Montebello?

In August, the average relative humidity in Montebello, California, is 54%.

How much does it rain in Montebello in August?

In August, the rain falls for 1.4 days. Throughout August, 0.08" (2mm) of precipitation is accumulated.

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

In August, the average length of the day in Montebello, California, is 13.4h.

What is the month with the most sunshine in Montebello?

July and August, with an average of 12h of sunshine, are months with the most sunshine.

How long on average sun shines in August in Montebello?

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

When is the highest UV index in Montebello?

With an average maximum UV index of 7, August is the month with the highest UV index in Montebello.

How high is the UV index in August in Montebello?

In August, the average daily maximum UV index in Montebello is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.

Average temperature in August
Montebello, CA

Average temperature in August - Montebello, CA
  • Average high temperature in August: 86.5°F

The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is December (64.9°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).

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Average pressure in August
Montebello, CA

Average pressure in August - Montebello, CA
  • Average pressure in August: 29.9"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in August
Montebello, CA

Average wind speed in August - Montebello, CA
  • Average wind speed in August: 4.7mph

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 and October (4.7mph).

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Average humidity in August
Montebello, CA

Average humidity in August - Montebello, CA
  • Average humidity in August: 54%

The month with the highest relative humidity is June (62%).
The month with the lowest relative humidity is November (48%).

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Average rainfall in August
Montebello, CA

Average rainfall in August - Montebello, CA
  • Average rainfall in August: 0.08"

The wettest month (with the highest rainfall) is December (1.3").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in August
Montebello, CA

Average rainfall days in August - Montebello, CA
  • Average rainfall days in August: 1.4 days

The month with the highest number of rainy days is March (6 days).
The month with the least rainy days is June (1.2 days).

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

Average daylight in August / Average sunshine in August - Montebello, CA
  • Average daylight in August: 13.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in August: 12h

Months with the most sunshine are July and August (Average sunshine: 12h).
Months with the least sunshine are January, February and December (Average sunshine: 6.8).

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Average sunshine days in August
Montebello, CA

Average sunshine days in August - Montebello, CA
  • Average sunshine days in August: 27.6 days

The month with the most sunshine days is August (27.6 days).
The month with the least sunshine days is February (22.5 days).

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Average UV index in August
Montebello, CA

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

The month with the highest UV index is August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in August
Montebello, CA

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

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).

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Average visibility in August
Montebello, CA

Average visibility in August - Montebello, CA
  • Average visibility in August: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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