Monthly weather forecast and climate
Upper Lake, CA

Weather in January

January, like December, in Upper Lake, California, is a cool winter month, with average temperature ranging between max 54.7°F (12.6°C) and min 38.7°F (3.7°C). In January, the average high-temperature is relatively the same as in December - a still cool 54.7°F (12.6°C). Weather in January »

Weather in February

The last month of the winter, February, is a moderate month in Upper Lake, California, with average temperature varying between 37.9°F (3.3°C) and 55.9°F (13.3°C). In Upper Lake, the average high-temperature in February is essentially the same as in January - a moderate 55.9°F (13.3°C). Weather in February »

Weather in March

The first month of the spring, March, is still a mild month in Upper Lake, California, with average temperature fluctuating between 38.8°F (3.8°C) and 57.9°F (14.4°C). In Upper Lake, California, the average high-temperature in March is almost the same as in February - a still moderate 57.9°F (14.4°C). Weather in March »

Weather in April

April is a comfortable spring month in Upper Lake, California, with average temperature varying between 64.8°F (18.2°C) and 42.3°F (5.7°C). In April, the average high-temperature slightly increases, from a mild 57.9°F (14.4°C) in March, to an enjoyable 64.8°F (18.2°C). Weather in April »

Weather in May

May, the last month of the spring, in Upper Lake, is an agreeable month, with average temperature varying between 72.1°F (22.3°C) and 46.9°F (8.3°C). In Upper Lake, the average high-temperature slightly increases, from a comfortable 64.8°F (18.2°C) in April, to a pleasant 72.1°F (22.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Upper Lake, California, with temperature in the range of an average high of 82.6°F (28.1°C) and an average low of 54.1°F (12.3°C). In Upper Lake, the average high-temperature rises, from an agreeable 72.1°F (22.3°C) in May, to a moderately hot 82.6°F (28.1°C). Weather in June »

Weather in July

July is a tropical summer month in Upper Lake, California, with temperature in the range of an average high of 89.6°F (32°C) and an average low of 57.7°F (14.3°C). With an average high-temperature of 89.6°F (32°C) and an average low-temperature of 57.7°F (14.3°C), July is the warmest month. The average heat index in July is calculated to a tropical 92.7°F (33.7°C). Weather in July »

Weather in August

August, the last month of the summer, in Upper Lake, is also a hot month, with average temperature ranging between max 89.1°F (31.7°C) and min 57.4°F (14.1°C). In Upper Lake, the average high-temperature in August is practically the same as in July - a still tropical 89.1°F (31.7°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Upper Lake, California, with average temperature ranging between max 84.2°F (29°C) and min 54.1°F (12.3°C). In Upper Lake, the average high-temperature is relatively the same as in August - a moderately hot 84.2°F (29°C). Weather in September »

Weather in October

October, the same as September, in Upper Lake, California, is another pleasant autumn month, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 48°F (8.9°C). In Upper Lake, the average high-temperature drops, from a warm 84.2°F (29°C) in September, to a pleasant 72.5°F (22.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a moderate month in Upper Lake, California, with temperature in the range of an average high of 60.1°F (15.6°C) and an average low of 40.6°F (4.8°C). In Upper Lake, the average high-temperature drops, from an agreeable 72.5°F (22.5°C) in October, to a mild 60.1°F (15.6°C). Weather in November »

Weather in December

The first month of the winter, December, is also a fresh month in Upper Lake, California, with average temperature fluctuating between 37.2°F (2.9°C) and 52.3°F (11.3°C). December is the coldest month, with an average high-temperature of 52.3°F (11.3°C) and an average low-temperature of 37.2°F (2.9°C). Weather in December »
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FAQ

How many days does it rain in Upper Lake?

In Upper Lake, during the entire year, the rain falls for 92 days and collects up to 21.02" (534mm) of precipitation.

When does it snow in Upper Lake?

January through March, November and December are months with snowfall in Upper Lake, California.

How many days does it snow in Upper Lake?

Throughout the year, in Upper Lake, California, there are 2 snowfall days, and 1.34" (34mm) of snow is accumulated.

When does it snow the most in Upper Lake?

Months with the most snowfall in Upper Lake are January and February, with an average 0.47" (12mm) of accumulated snow.

What is the month with the lowest UV index in Upper Lake?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Upper Lake, California.

What is the rainiest month in Upper Lake?

The month with the most rainfall is February when the rain falls for 10.3 days and typically aggregates up to 4.06" (103mm) of precipitation.

What is the most humid month in Upper Lake?

The most humid month in Upper Lake is March, with an average relative humidity of 75%.

When it does not snow in Upper Lake?

April through October are months without snowfall in Upper Lake, California.

When are the longest days in Upper Lake?

June has the longest days of the year, with an average of 14.9h of daylight.

What is the month with 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 warmest month in Upper Lake?

With an average high-temperature of 89.6°F (32°C) and an average low-temperature of 57.7°F (14.3°C), July is the warmest month.

What is the least humid month in Upper Lake?

The least humid month is July, with an average relative humidity of 47%.

What is the driest month in Upper Lake?

July is the month with the least rainfall in Upper Lake, California. Rain falls for 1.3 days and accumulates 0.04" (1mm) of precipitation.

What month has the most sunshine in Upper Lake?

With an average of 12h of sunshine, July has the most sunshine of the year.

What is the coldest month in Upper Lake?

December is the coldest month, with an average high-temperature of 52.3°F (11.3°C) and an average low-temperature of 37.2°F (2.9°C).

What is the month with the shortest days in Upper Lake?

With an average of 9.5h of daylight, December has the shortest days of the year in Upper Lake.

What is the month with the least sunshine in Upper Lake?

The month with the least sunshine in Upper Lake, California, is December, with an average of 5.3h of sunshine.

Average temperature
Upper Lake, CA

Average temperature - Upper Lake, CA

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).

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
Upper Lake, CA

Average pressure - Upper Lake, CA

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

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Average wind speed
Upper Lake, CA

Average wind speed - Upper Lake, CA

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 rainfall
Upper Lake, CA

Average rainfall - Upper Lake, CA

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
Upper Lake, CA

Average rainfall days - Upper Lake, CA

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

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Average snowfall
Upper Lake, CA

Average snowfall - Upper Lake, CA

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

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Average snowfall days
Upper Lake, CA

Average snowfall days - Upper Lake, CA

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

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Average daylight / Average sunshine
Upper Lake, CA

Average daylight / Average sunshine - Upper Lake, CA

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.3h).

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Average sunshine days
Upper Lake, CA

Average sunshine days - Upper Lake, CA

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
Upper Lake, CA

Average UV index - Upper Lake, CA

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

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Average visibility
Upper Lake, CA

Average visibility - Upper Lake, CA

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

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