August weather forecast
Truckee, CA

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The iconic Donner Summit Bridge called the Rainbow Bridge or Route 40, in Truckee, California
The iconic Donner Summit Bridge called the Rainbow Bridge or Route 40, in Truckee, California

Weather in August

August carries forward the high-temperature trend from July, matching the average high temperatures at 78.3°F (25.7°C). Despite temperatures continuing to be elevated, nights gradually become cool, hinting at the impending autumn. Sunshine remains ample, illuminating the Truckee landscape beautifully. The wind velocity dips, creating favorable conditions for outdoor pursuits. The humidity starts to creep back in, indicating a wind-down of the summer heat.

Temperature

August ushers in an average high-temperature of a still moderately hot 78.3°F (25.7°C), aligning closely with the preceding month. Truckee's August nights see a large temperature deviation, with temperatures resting at a low of 47.7°F (8.7°C).

Humidity

The months with the lowest humidity are July and August, with an average relative humidity of 39%.

Rainfall

August is the month with the least rainfall in Truckee. Rain falls for 2.7 days and accumulates 0.12" (3mm) of precipitation.

Snowfall

July and August are months without snowfall in Truckee.

Daylight

The average length of the day in August in Truckee is 13h and 40min.
On the first day of August, sunrise is at 6:01 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:32 pm PDT.

Sunshine

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

UV index

The months with the highest UV index in Truckee are June through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: In August, a daily maximum UV index of 5 leads to the following instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What are August temperatures in Truckee?

An average high-temperature, in August, in Truckee, is 78.3°F (25.7°C) and the average low-temperature is 47.7°F (8.7°C).

What is the least humid month in Truckee?

July and August, with an average relative humidity of 39%, are the least humid months.

What is the average humidity in August in Truckee?

In Truckee, California, the average relative humidity in August is 39%.

What is the driest month in Truckee?

August is the month with the least rainfall in Truckee, California. Rain falls for 2.7 days and accumulates 0.12" (3mm) of precipitation.

How much does it rain in Truckee in August?

In Truckee, in August, during 2.7 rainfall days, 0.12" (3mm) of precipitation is typically accumulated.

When it does not snow in Truckee?

July and August are months without snowfall in Truckee, California.

Does it snow in Truckee in August?

In Truckee, in August, it doesn't snow. In September, it regularly snows.

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

In August, the average day length is 13h and 40min.

When are sunrise and sunset in August in Truckee?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 8:12 pm. On the last day of the month, in Truckee, sunrise is at 6:29 am and sunset at 7:32 pm PDT.

How many hours of sunshine does Truckee have in August?

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

When is the highest UV index in Truckee?

June through August, with an average maximum UV index of 5, are months with the highest UV index in Truckee, California.

How high is the UV index in August in Truckee?

In Truckee, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium 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
Truckee, CA

Average temperature in August - Truckee, CA
  • Average high temperature in August: 78.3°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (37°F).

  • Average low temperature in August: 47.7°F

The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is December (22.1°F).

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Average pressure in August
Truckee, CA

Average pressure in August - Truckee, CA
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in August
Truckee, CA

Average wind speed in August - Truckee, CA
  • Average wind speed in August: 4.8mph

The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in August
Truckee, CA

Average humidity in August - Truckee, CA
  • Average humidity in August: 39%

The month with the highest relative humidity is March (80%).
The months with the lowest relative humidity are July and August (39%).

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Average rainfall in August
Truckee, CA

Average rainfall in August - Truckee, CA
  • Average rainfall in August: 0.12"

The wettest month (with the highest rainfall) is February (4.37").
The driest month (with the least rainfall) is August (0.12").

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Average rainfall days in August
Truckee, CA

Average rainfall days in August - Truckee, CA
  • Average rainfall days in August: 2.7 days

The month with the highest number of rainy days is May (8.9 days).
The month with the least rainy days is July (2.4 days).

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Average snowfall in August
Truckee, CA

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

The month with the highest snowfall is March (30.35").
The months with the least snowfall are July and August (0").

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Average snowfall days in August
Truckee, CA

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

The month with the highest number of snowfall days is March (16.2 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in August / Average sunshine in August - Truckee, CA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 12h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in August
Truckee, CA

Average sunshine days in August - Truckee, CA
  • Average sunshine days in August: 26.8 days

The month with the most sunshine days is July (27.1 days).
The month with the least sunshine days is March (12.8 days).

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Average UV index in August
Truckee, CA

Average UV index in August - Truckee, CA
  • Average UV index in August: 5

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in August
Truckee, CA

Average cloud cover in August - Truckee, CA
  • Average cloud cover in August: 7

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 6).

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Average visibility in August
Truckee, CA

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

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).

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Truckee, California, USA

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