Monthly weather forecast and climate
Monte Rio, CA

Weather in January

January, like December, is another mild winter month in Monte Rio, California, with temperature in the range of an average low of 42.3°F (5.7°C) and an average high of 57.7°F (14.3°C). In January, the average high-temperature is practically the same as in December - a still mild 57.7°F (14.3°C). Weather in January »

Weather in February

The last month of the winter, February, is another mild month in Monte Rio, California, with average temperature varying between 59.2°F (15.1°C) and 41.9°F (5.5°C). In February, the average high-temperature is essentially the same as in January - a still moderate 59.2°F (15.1°C). Weather in February »

Weather in March

The first month of the spring, March, is also a moderate month in Monte Rio, California, with average temperature fluctuating between 43°F (6.1°C) and 60.6°F (15.9°C). In March, the average high-temperature is practically the same as in February - a still moderate 60.6°F (15.9°C). Weather in March »

Weather in April

April in Monte Rio, California, is an enjoyable spring month, with temperature in the range of an average high of 65.7°F (18.7°C) and an average low of 44.8°F (7.1°C). In April, the average high-temperature is relatively the same as in March - a comfortable 65.7°F (18.7°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Monte Rio, California, with average temperature varying between 47.5°F (8.6°C) and 69.6°F (20.9°C). In May, the average high-temperature is almost the same as in April - an agreeable 69.6°F (20.9°C). Weather in May »

Weather in June

June, the first month of the summer, in Monte Rio, is a moderately hot month, with average temperature fluctuating between 51.8°F (11°C) and 77.2°F (25.1°C). In Monte Rio, the average high-temperature slightly increases, from an agreeable 69.6°F (20.9°C) in May, to a warm 77.2°F (25.1°C). Weather in June »

Weather in July

July, like June, in Monte Rio, California, is a moderately hot summer month, with average temperature fluctuating between 53.1°F (11.7°C) and 80.2°F (26.8°C). In July, the average high-temperature is relatively the same as in June - a still moderately hot 80.2°F (26.8°C). Weather in July »

Weather in August

August, the last month of the summer, in Monte Rio, is another warm month, with average temperature ranging between min 53.4°F (11.9°C) and max 81°F (27.2°C). The warmest month is August, with an average high-temperature of 81°F (27.2°C) and an average low-temperature of 53.4°F (11.9°C). In August, the average heat index is appraised at 83.8°F (28.8°C). Weather in August »

Weather in September

September, the first month of the autumn, in Monte Rio, is also a moderately hot month, with average temperature varying between 79.9°F (26.6°C) and 53.4°F (11.9°C). In September, the average high-temperature is practically the same as in August - a still warm 79.9°F (26.6°C). Weather in September »

Weather in October

October, like September, is another pleasant autumn month in Monte Rio, California, with average temperature fluctuating between 50.5°F (10.3°C) and 72.5°F (22.5°C). In October, the average high-temperature slightly decreases, from a warm 79.9°F (26.6°C) in September, to an agreeable 72.5°F (22.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Monte Rio, California, with average temperature ranging between max 63.5°F (17.5°C) and min 45.3°F (7.4°C). In November, the average high-temperature drops, from a pleasant 72.5°F (22.5°C) in October, to an enjoyable 63.5°F (17.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Monte Rio, is still a mild month, with average temperature varying between 56.3°F (13.5°C) and 41.4°F (5.2°C). The coldest month is December, with an average high-temperature of 56.3°F (13.5°C) and an average low-temperature of 41.4°F (5.2°C). Weather in December »
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FAQ

How many days does it rain in Monte Rio?

In Monte Rio, during the entire year, the rain falls for 60.1 days and collects up to 12.87" (327mm) of precipitation.

What are the months with the lowest UV index in Monte Rio?

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

What is the wettest month in Monte Rio?

The month with the most rainfall is February when the rain falls for 7.3 days and typically aggregates up to 3.27" (83mm) of precipitation.

What is the most humid month in Monte Rio?

March is the most humid month in Monte Rio, with an average relative humidity of 77%.

When are the longest days in Monte Rio?

With an average of 14.8h of daylight, June has the longest days of the year in Monte Rio, California.

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

Months with the highest UV index in Monte Rio are June through August, with an average maximum UV index of 6.

What is the driest month in Monte Rio?

Months with the least rainfall in Monte Rio are July and August Rain falls for 1.3 days and accumulates 0.04" (1mm) of rain.

What month has the most sunshine in Monte Rio?

The month with the most sunshine in Monte Rio, California, is July, with an average of 11.8h of sunshine.

What is the warmest month in Monte Rio?

The warmest month in Monte Rio is August, with an average high-temperature of 81°F (27.2°C) and an average low-temperature of 53.4°F (11.9°C).

What is the least humid month in Monte Rio?

The least humid month is September, with an average relative humidity of 62%.

What is the coldest month in Monte Rio?

The coldest month in Monte Rio, California, is December, with an average high-temperature of 56.3°F (13.5°C) and an average low-temperature of 41.4°F (5.2°C).

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

The month with the shortest days in Monte Rio, California, is December, with an average of 9.5h of daylight.

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

The month with the least sunshine is December, with an average of 5.4h of sunshine.

Average temperature
Monte Rio, CA

Average temperature - Monte Rio, CA

The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (56.3°F).

Months with the highest average low temperature are August and September (53.4°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

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Average pressure
Monte Rio, CA

Average pressure - Monte Rio, CA

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed
Monte Rio, CA

Average wind speed - Monte Rio, CA

The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is November (5mph).

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Average rainfall
Monte Rio, CA

Average rainfall - Monte Rio, CA

The wettest month (with the highest rainfall) is February (3.27").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days
Monte Rio, CA

Average rainfall days - Monte Rio, CA

The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).

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Average daylight / Average sunshine
Monte Rio, CA

Average daylight / Average sunshine - Monte Rio, CA

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

The month with the most sunshine is July (Average sunshine: 11.8h).
The month with the least sunshine is December (Average sunshine: 5.4h).

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Average sunshine days
Monte Rio, CA

Average sunshine days - Monte Rio, CA

The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is February (19.9 days).

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Average UV index
Monte Rio, CA

Average UV index - Monte Rio, 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
Monte Rio, CA

Average visibility - Monte Rio, CA

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

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