August weather forecast
Winchester, CA

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Weather in August

August, the last month of the summer in Winchester, is another hot month, with an average temperature ranging between max 89.6°F (32°C) and min 63.3°F (17.4°C).

Temperature

The warmest period tends to be August, when average temperatures fluctuate between a high of 89.6°F (32°C) and a low of 63.3°F (17.4°C).

Heat index

For August, the heat index is calculated to be a tropical 93.2°F (34°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. 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 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

With an average relative humidity of 47%, August is the least humid month.

Rainfall

In August, the rain falls for 3.8 days. Throughout August, 0.31" (8mm) of precipitation is accumulated. In Winchester, California, during the entire year, the rain falls for 55.7 days and collects up to 7.05" (179mm) of precipitation.

Snowfall

January, March through December are months without snowfall.

Daylight

The average length of the day in August in Winchester is 13h and 22min.
On the first day of the month, sunrise is at 6:01 am and sunset at 7:48 pm. On the last day of August, sunrise is at 6:22 am and sunset at 7:14 pm PDT.

Sunshine

In August, the average sunshine in Winchester, California, is 12h.

UV index

In Winchester, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 6 in August translates into this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
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Frequently asked questions

What part of the year is the hottest in Winchester?

The warmest month is August, with an average high-temperature of 89.6°F (32°C) and an average low-temperature of 63.3°F (17.4°C).

How hot is it in Winchester in August?

August temperatures in Winchester, California, vary between a high-temperature of 89.6°F (32°C) and a low-temperature of 63.3°F (17.4°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 93.2°F (34°C).

What is the least humid month in Winchester?

August is the least humid month in Winchester, California, with an average relative humidity of 47%.

What is the average humidity in August in Winchester?

In Winchester, the average relative humidity in August is 47%.

How many days does it rain in August in Winchester?

In Winchester, California, during August, the rain falls for 3.8 days and regularly aggregates up to 0.31" (8mm) of precipitation.

When it does not snow in Winchester?

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

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

The average day length in August in Winchester is 13h and 22min.

When is the sunrise / sunset in August in Winchester?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:14 pm PDT.

How long on average sun shines in August in Winchester?

The average sunshine duration in August in Winchester is 12h.

What is the UV index intensity in August in Winchester?

In Winchester, California, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Winchester, CA

Average temperature in August - Winchester, CA
  • Average high temperature in August: 89.6°F

The warmest month (with the highest average high temperature) is August (89.6°F).
The month with the lowest average high temperature is December (61°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is December (43°F).

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Average pressure in August
Winchester, CA

Average pressure in August - Winchester, CA
  • Average pressure in August: 29.87"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in August
Winchester, CA

Average wind speed in August - Winchester, CA
  • Average wind speed in August: 4.2mph

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest months (with the lowest average wind speed) are August and September (4.2mph).

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Average humidity in August
Winchester, CA

Average humidity in August - Winchester, CA
  • Average humidity in August: 47%

The month with the highest relative humidity is May (60%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in August
Winchester, CA

Average rainfall in August - Winchester, CA
  • Average rainfall in August: 0.31"

The wettest month (with the highest rainfall) is December (1.38").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in August
Winchester, CA

Average rainfall days in August - Winchester, CA
  • Average rainfall days in August: 3.8 days

The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.3 days).

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Average snowfall in August
Winchester, CA

Average snowfall in August - Winchester, CA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in August
Winchester, CA

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

The month with the highest number of snowfall days is February (0.2 days).
The 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
Winchester, CA

Average daylight in August / Average sunshine in August - Winchester, 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: 10h and 0min).

  • Average sunshine in August: 12h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days in August
Winchester, CA

Average sunshine days in August - Winchester, CA
  • Average sunshine days in August: 24.5 days

The month with the most sunshine days is June (26.9 days).
The month with the least sunshine days is February (21.6 days).

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Average UV index in August
Winchester, CA

Average UV index in August - Winchester, CA
  • Average UV index in August: 6

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

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Average cloud cover in August
Winchester, CA

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

The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in August
Winchester, CA

Average visibility in August - Winchester, 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).

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Winchester, California, USA

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