Climate and monthly weather forecast
Rio Oso, CA

Weather in January

January in Rio Oso, California, is a mild winter month, with an average temperature ranging between min 40.6°F (4.8°C) and max 56.1°F (13.4°C). In Rio Oso, California, the average high-temperature in January is almost the same as in December - a moderate 56.1°F (13.4°C). Weather in January »

Weather in February

February, the last month of the winter in Rio Oso, is another mild month, with temperature in the range of an average low of 41°F (5°C) and an average high of 58.3°F (14.6°C). In February, the average high-temperature is practically the same as in January - a still moderate 58.3°F (14.6°C). Weather in February »

Weather in March

The first month of the spring, March, is an enjoyable month in Rio Oso, California, with temperature in the range of an average high of 62.1°F (16.7°C) and an average low of 43.5°F (6.4°C). In Rio Oso, California, the average high-temperature in March is relatively the same as in February - a comfortable 62.1°F (16.7°C). Weather in March »

Weather in April

April is a pleasant spring month in Rio Oso, California, with an average temperature varying between 69.4°F (20.8°C) and 46.9°F (8.3°C). In April, the average high-temperature slightly increases from a comfortable 62.1°F (16.7°C) in March to an agreeable 69.4°F (20.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Rio Oso, California, with an average temperature varying between 52.7°F (11.5°C) and 77.5°F (25.3°C). In Rio Oso, the average high-temperature in May marginally rises from an agreeable 69.4°F (20.8°C) in April to a warm 77.5°F (25.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a hot month in Rio Oso, California, with temperature in the range of an average high of 88.7°F (31.5°C) and an average low of 58.8°F (14.9°C). In Rio Oso, the average high-temperature in June increases from a moderately hot 77.5°F (25.3°C) in May to a tropical 88.7°F (31.5°C). Weather in June »

Weather in July

July in Rio Oso, California, is a sweltering summer month, with an average temperature varying between 61.3°F (16.3°C) and 95.4°F (35.2°C). With an average high-temperature of 95.4°F (35.2°C) and an average low-temperature of 61.3°F (16.3°C), July is the warmest month. Weather in July »

Weather in August

The last month of the summer, August, is another tropical month in Rio Oso, California, with an average temperature varying between 94.6°F (34.8°C) and 60.8°F (16°C). In Rio Oso, the average high-temperature in August is relatively the same as in July - a hot 94.6°F (34.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a tropical month in Rio Oso, California, with temperature in the range of an average high of 88.9°F (31.6°C) and an average low of 59°F (15°C). In Rio Oso, California, the average high-temperature in September slightly decreases from 94.6°F (34.8°C) in August to a still tropical 88.9°F (31.6°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Rio Oso, California, with an average temperature ranging between min 53.1°F (11.7°C) and max 76.1°F (24.5°C). In October, the average high-temperature decreases from a tropical 88.9°F (31.6°C) in September to a moderately hot 76.1°F (24.5°C). Weather in October »

Weather in November

November, the last month of the autumn in Rio Oso, is another comfortable month, with temperature in the range of an average low of 45.3°F (7.4°C) and an average high of 63°F (17.2°C). In Rio Oso, the average high-temperature in November decreases from a warm 76.1°F (24.5°C) in October to an enjoyable 63°F (17.2°C). Weather in November »

Weather in December

December, the first month of the winter in Rio Oso, is also a fresh month, with an average temperature varying between 40.6°F (4.8°C) and 54.3°F (12.4°C). The coldest month is December, with an average high-temperature of 54.3°F (12.4°C) and an average low-temperature of 40.6°F (4.8°C). Weather in December »
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FAQ

How much does it rain in Rio Oso?

In Rio Oso, during the entire year, the rain falls for 78.2 days and collects up to 20.43" (519mm) of precipitation.

When it does not snow in Rio Oso?

January through November are months without snowfall in Rio Oso, California.

How many days does it snow in Rio Oso?

Throughout the year, in Rio Oso, California, there are 0.1 snowfall days.

When is the lowest UV index in Rio Oso?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.

What is the most humid month in Rio Oso?

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

What is the rainiest month in Rio Oso?

The month with the most rainfall is March, when the rain falls for 14.3 days and typically aggregates up to 3.9" (99mm) of precipitation.

When is Daylight Saving Time (DST) in Rio Oso?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from PDT to PST.

When are the longest days in Rio Oso?

With an average of 14h and 52min of daylight, June has the longest days of the year.

What is the month with the highest UV index in Rio Oso?

The months with the highest UV index in Rio Oso, California, are June and July, with an average maximum UV index of 7.

What is the warmest month in Rio Oso?

July is the warmest month, with an average high-temperature of 95.4°F (35.2°C) and an average low-temperature of 61.3°F (16.3°C).

What is the least humid month in Rio Oso?

The least humid month is July, with an average relative humidity of 39%.

What is the driest month in Rio Oso?

The months with the least rainfall are July and August Rain falls for 1 days and accumulates 0.04" (1mm) of rain.

What month has the most sunshine in Rio Oso?

The month with the most sunshine in Rio Oso, California, is July, with an average of 12.1h of sunshine.

What is the coldest month in Rio Oso?

December is the coldest month in Rio Oso, California, with an average high-temperature of 54.3°F (12.4°C) and an average low-temperature of 40.6°F (4.8°C).

When does it snow in Rio Oso?

December is the only month when snow falls in Rio Oso.

What is the snowiest month in Rio Oso?

The month with the most snowfall days is December, when snow falls for 0.1 days.

What is the month with the shortest days in Rio Oso?

December has the shortest days of the year, with an average of 9h and 29min of daylight.

What is the month with the least sunshine in Rio Oso?

December has the least sunshine of the year in Rio Oso, with an average of 5.5h of sunshine.

Average temperature
Rio Oso, CA

Average temperature - Rio Oso, CA

The warmest month (with the highest average high temperature) is July (95.4°F).
The month with the lowest average high temperature is December (54.3°F).

The month with the highest average low temperature is July (61.3°F).
The coldest months (with the lowest average low temperature) are January and December (40.6°F).

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Average pressure
Rio Oso, CA

Average pressure - Rio Oso, CA

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed
Rio Oso, CA

Average wind speed - Rio Oso, CA

The windiest months (with the highest average wind speed) are March and May (6.2mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).

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Average rainfall
Rio Oso, CA

Average rainfall - Rio Oso, CA

The wettest month (with the highest rainfall) is March (3.9").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days
Rio Oso, CA

Average rainfall days - Rio Oso, CA

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is July (1 days).

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Average snowfall days
Rio Oso, CA

Average snowfall days - Rio Oso, CA

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight / Average sunshine
Rio Oso, CA

Average daylight / Average sunshine - Rio Oso, CA

The month with the longest days is June (Average daylight: 14h and 52min).
The month with the shortest days is December (Average daylight: 9h and 29min).

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days
Rio Oso, CA

Average sunshine days - Rio Oso, CA

The month with the most sunshine days is July (30 days).
The month with the least sunshine days is March (16.1 days).

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Average UV index
Rio Oso, CA

Average UV index - Rio Oso, CA

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average visibility
Rio Oso, CA

Average visibility - Rio Oso, CA

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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