August weather forecast and climate
North Cucamonga, CA

Weather in August

The last month of the summer, August, is also a hot month in North Cucamonga, California, with temperature in the range of an average low of 66.6°F (19.2°C) and an average high of 91.8°F (33.2°C).

Temperature

August is the warmest month, with an average high-temperature of 91.8°F (33.2°C) and an average low-temperature of 66.6°F (19.2°C).

Heat index

The average heat index is evaluated at a hot 93.7°F (34.3°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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', 'real feel', 'apparent temperature', 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, metabolic differences, wind), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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

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

Rainfall

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

Snowfall

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

Daylight

In North Cucamonga, the average length of the day is 13.4h.

Sunshine

In August, the average sunshine is 12h.

UV index

Months with the highest UV index in North Cucamonga, California, are July and August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from the exposure to the Sun's UV rays for average individuals.
Note: In August, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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.
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FAQ

What is the warmest month in North Cucamonga?

August is the warmest month in North Cucamonga, with an average high-temperature of 91.8°F (33.2°C) and an average low-temperature of 66.6°F (19.2°C).

What is the temperature in August in North Cucamonga?

In August, the average high-temperature 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. 'real feel', 'apparent temperature'), that represents influence of the relative humidity to air temperaure, is appraised at 93.7°F (34.3°C).

What is the least humid month in North Cucamonga?

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

What is the average humidity in August in North Cucamonga?

In August, the average relative humidity in North Cucamonga is 41%.

How many days does it rain in August in North Cucamonga?

In North Cucamonga, in August, during 1.9 rainfall days, 0.12" (3mm) of precipitation is typically accumulated.

When it does not snow in North Cucamonga?

In North Cucamonga, California, snow does not fall in January, March through December.

What is the average length of the day in August in North Cucamonga?

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

How long on average sun shines in August in North Cucamonga?

In August, the average sunshine in North Cucamonga is 12h.

What are the months with the highest UV index in North Cucamonga?

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

What is the UV index intensity in August in North Cucamonga?

In North Cucamonga, California, the average daily maximum UV index in August is 7. A UV Index reading of 6 to 7 represents a high health threat from the exposure to the Sun's UV radiation.

Average temperature in August
North Cucamonga, CA

Average temperature in August - North Cucamonga, 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).

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Average pressure in August
North Cucamonga, CA

Average pressure in August - North Cucamonga, CA
  • Average pressure in August: 29.88"

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

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Average wind speed in August
North Cucamonga, CA

Average wind speed in August - North Cucamonga, 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).

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Average humidity in August
North Cucamonga, CA

Average humidity in August - North Cucamonga, CA
  • Average humidity in August: 41%

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

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Average rainfall in August
North Cucamonga, CA

Average rainfall in August - North Cucamonga, 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").

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Average rainfall days in August
North Cucamonga, CA

Average rainfall days in August - North Cucamonga, 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).

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Average snowfall days in August
North Cucamonga, CA

Average snowfall days in August - North Cucamonga, CA
  • Average snowfall days in August: 0 days

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

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Average daylight in August /
Average sunshine in August
North Cucamonga, CA

Average daylight in August / Average sunshine in August - North Cucamonga, 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

The month with the most sunshine is July (Average sunshine: 12.1h).
Months with the least sunshine are February and December (Average sunshine: 6.9).

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Average sunshine days in August
North Cucamonga, CA

Average sunshine days in August - North Cucamonga, 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).

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Average UV index in August
North Cucamonga, CA

Average UV index in August - North Cucamonga, CA
  • Average UV index in August: 7

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).

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Average cloud cover in August
North Cucamonga, CA

Average cloud cover in August - North Cucamonga, CA
  • Average cloud cover in August: 5

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).

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Average visibility in August
North Cucamonga, CA

Average visibility in August - North Cucamonga, 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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