August weather forecast and climate
Walnut Creek, NC

August, the last month of the summer, in Walnut Creek, is also a hot month, with average temperature varying between 70.3°F (21.3°C) and 86.9°F (30.5°C).

Temperature

In August, the average high-temperature is practically the same as in July - a still tropical 86.9°F (30.5°C). In Walnut Creek, the average low-temperature is 70.3°F (21.3°C).

Heat index

In August, the average heat index is evaluated at a torrid 102°F (38.9°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, 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 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.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

August and September, with an average relative humidity of 79%, are most humid months.

Rainfall

August is the month with the most rainfall in Walnut Creek. Rain falls for 15 days and accumulates 1.42" (36mm) of precipitation.

Snowfall

March through December are months without snowfall.

Daylight

The average length of the day in August is 13.4h.

Sunshine

The average sunshine in Walnut Creek, North Carolina, is 10.1h.

UV index

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in August in Walnut Creek?

The average high-temperature, in August, is 86.9°F (30.5°C), while the average low-temperature is 70.3°F (21.3°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), that calculates temperature value influenced by the moisture in the air, in August is estimated at 102°F (38.9°C).

What are the most humid months in Walnut Creek?

Months with the highest humidity are August and September, with an average relative humidity of 79%.

What is the average humidity in August in Walnut Creek?

The average relative humidity in August in Walnut Creek, North Carolina, is 79%.

How many days does it rain in August in Walnut Creek?

In Walnut Creek, in August, during 15 rainfall days, 1.42" (36mm) of precipitation is typically accumulated.

What is the rainiest month in Walnut Creek?

August is the month with the most rainfall in Walnut Creek, North Carolina. Rain falls for 15 days and accumulates 1.42" (36mm) of precipitation.

When it does not snow in Walnut Creek?

In Walnut Creek, North Carolina, snow does not fall in March through December.

How many hours of daylight does Walnut Creek have in August?

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

How long on average sun shines in August in Walnut Creek?

The average sunshine in August in Walnut Creek is 10.1h.

How high is the UV index in August in Walnut Creek?

In August, the average daily maximum UV index in Walnut Creek is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to the UV radiation.
Average temperature in August - Walnut Creek, NC
  • Average high temperature in August: 30.5°C

The warmest month (with the highest average high temperature) is July (31.3°C).
The month with the lowest average high temperature is January (9.8°C).

  • Average low temperature in August: 21.3°C

The month with the highest average low temperature is July (22°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).

Average pressure in August - Walnut Creek, NC
  • Average pressure in August: 1015.5mbar

The month with the highest atmospheric pressure is November (1020.5mbar).
The month with the lowest atmospheric pressure is June (1014.6mbar).

Average wind speed in August - Walnut Creek, NC
  • Average wind speed in August: 9km/h

The windiest month (with the highest average wind speed) is April (13.9km/h).
The calmest month (with the lowest average wind speed) is August (9km/h).

Average humidity in August - Walnut Creek, NC
  • Average humidity in August: 79%

Months with the highest relative humidity are August and September (79%).
The month with the lowest relative humidity is January (73%).

Average rainfall in August - Walnut Creek, NC
  • Average rainfall in August: 36mm

The wettest month (with the highest rainfall) is August (36mm).
The driest month (with the least rainfall) is January (10mm).

Average rainfall days in August - Walnut Creek, NC
  • Average rainfall days in August: 15 days

The month with the highest number of rainy days is August (15 days).
The month with the least rainy days is November (5.8 days).

Average snowfall in August - Walnut Creek, NC
  • Average snowfall in August: 0mm

The month with the highest snowfall is February (2mm).
Months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in August - Walnut Creek, NC
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (0.7 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in August / Average sunshine in August - Walnut Creek, NC
  • Average daylight in August: 13.4h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in August: 10.1h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 5.5h).

Average sunshine days in August - Walnut Creek, NC
  • Average sunshine days in August: 11.5 days

The month with the most sunshine days is October (23.5 days).
The month with the least sunshine days is June (11.3 days).

Average UV index in August - Walnut Creek, NC
  • Average UV index in August: 6

Months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in August - Walnut Creek, NC
  • Average cloud cover in August: 35

Months with the most cloud cover are February and March (Cloud cover 41).
Months with the least cloud cover are June, July and October (Cloud cover 32).

Average visibility in August - Walnut Creek, NC
  • Average visibility in August: 8km

Months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (9km).
The month with the lowest visibility is August (8km).