August weather forecast
Upper Lake, CA

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Weather in August

The last month of the summer, August, is also a hot month in Upper Lake, California, with temperature in the range of an average high of 89.1°F (31.7°C) and an average low of 57.4°F (14.1°C).

Temperature

Upon the beginning of August, Upper Lake's high-temperatures register at a still tropical 89.1°F (31.7°C), closely mirroring the preceding month. Upper Lake reports a significant contrast between daytime and nighttime temperatures, with an average low of 57.4°F (14.1°C) in August.

Heat index

In August, the heat index is estimated at a hot 91.4°F (33°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

The average relative humidity in August in Upper Lake is 48%.

Rainfall

In Upper Lake, in August, it is raining for 1.3 days, with typically 0.08" (2mm) of accumulated precipitation. Throughout the year, in Upper Lake, California, there are 92 rainfall days, and 21.02" (534mm) of precipitation is accumulated.

Snowfall

In Upper Lake, snow does not fall in April through October.

Daylight

In August, the average length of the day in Upper Lake is 13h and 39min.
On the first day of August in Upper Lake, sunrise is at 6:12 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:43 pm PDT.

Sunshine

In Upper Lake, the average sunshine in August is 11.9h.

UV index

The months with the highest UV index in Upper Lake are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 6 suggests this advice:
Elude overexposure. Fair-skinned people could get burnt 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Frequently asked questions

How hot is August in Upper Lake?

August temperatures vary between a high-temperature of 89.1°F (31.7°C) and a low-temperature of 57.4°F (14.1°C). The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 91.4°F (33°C).

What is the average humidity in August in Upper Lake?

In Upper Lake, the average relative humidity in August is 48%.

How much does it rain in Upper Lake in August?

In Upper Lake, in August, it is raining for 1.3 days, with typically 0.08" (2mm) of accumulated precipitation.

When it does not snow in Upper Lake?

In Upper Lake, California, snow does not fall in April through October.

How many hours of daylight does Upper Lake have in August?

In August, the average day length in Upper Lake is 13h and 39min.

What time are sunrise and sunset in August in Upper Lake?

On the first day of August, sunrise is at 6:12 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:43 pm PDT.

How many hours of sunshine does Upper Lake have in August?

In Upper Lake, the average sunshine duration in August is 11.9h.

When is the highest UV index in Upper Lake?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in August in Upper Lake?

In August, the average daily maximum UV index in Upper Lake, California, is 6. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
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
Upper Lake, CA

Average temperature in August - Upper Lake, CA
  • Average high temperature in August: 89.1°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is December (52.3°F).

  • Average low temperature in August: 57.4°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).

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Average pressure in August
Upper Lake, CA

Average pressure in August - Upper Lake, CA
  • Average pressure in August: 29.91"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).

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Average wind speed in August
Upper Lake, CA

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

The windiest month (with the highest average wind speed) is April (5.3mph).
The calmest month (with the lowest average wind speed) is November (4.1mph).

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Average humidity in August
Upper Lake, CA

Average humidity in August - Upper Lake, CA
  • Average humidity in August: 48%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (47%).

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Average rainfall in August
Upper Lake, CA

Average rainfall in August - Upper Lake, CA
  • Average rainfall in August: 0.08"

The wettest month (with the highest rainfall) is February (4.06").
The driest month (with the least rainfall) is July (0.04").

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Average rainfall days in August
Upper Lake, CA

Average rainfall days in August - Upper Lake, CA
  • Average rainfall days in August: 1.3 days

The month with the highest number of rainy days is March (15.9 days).
The months with the least rainy days are July and August (1.3 days).

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Average snowfall in August
Upper Lake, CA

Average snowfall in August - Upper Lake, CA
  • Average snowfall in August: 0"

The months with the highest snowfall are January and February (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Upper Lake, CA

Average snowfall days in August - Upper Lake, CA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Upper Lake, CA

Average daylight in August / Average sunshine in August - Upper Lake, 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: 11h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in August
Upper Lake, CA

Average sunshine days in August - Upper Lake, CA
  • Average sunshine days in August: 28.3 days

The months with the most sunshine days are July and August (28.3 days).
The month with the least sunshine days is March (13.7 days).

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Average UV index in August
Upper Lake, CA

Average UV index in August - Upper Lake, CA
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in August
Upper Lake, CA

Average cloud cover in August - Upper Lake, CA
  • Average cloud cover in August: 5

The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in August
Upper Lake, CA

Average visibility in August - Upper Lake, CA
  • Average visibility in August: 6mi

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

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Upper Lake, California, USA

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