Monthly weather forecast and climate
Rohnert Park, CA

Weather in January

January, the same as December, in Rohnert Park, California, is another mild winter month, with average temperature varying between 43.2°F (6.2°C) and 57°F (13.9°C). In Rohnert Park, California, the average high-temperature is relatively the same as in December - a still moderate 57°F (13.9°C). Weather in January »

Weather in February

The last month of the winter, February, is also a moderate month in Rohnert Park, California, with average temperature fluctuating between 42.6°F (5.9°C) and 58.6°F (14.8°C). In February, the average high-temperature is almost the same as in January - a still moderate 58.6°F (14.8°C). Weather in February »

Weather in March

March, the first month of the spring, in Rohnert Park, is also a moderate month, with average temperature fluctuating between 44.1°F (6.7°C) and 60.4°F (15.8°C). In Rohnert Park, the average high-temperature is relatively the same as in February - a still moderate 60.4°F (15.8°C). Weather in March »

Weather in April

April is an enjoyable spring month in Rohnert Park, California, with average temperature ranging between max 64.9°F (18.3°C) and min 45.5°F (7.5°C). In Rohnert Park, the average high-temperature in April is essentially the same as in March - an enjoyable 64.9°F (18.3°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Rohnert Park, California, with temperature in the range of an average low of 48.6°F (9.2°C) and an average high of 69.3°F (20.7°C). In Rohnert Park, the average high-temperature in May is practically the same as in April - a pleasant 69.3°F (20.7°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Rohnert Park, California, with average temperature ranging between max 76.5°F (24.7°C) and min 52.9°F (11.6°C). In Rohnert Park, California, the average high-temperature slightly increases, from an agreeable 69.3°F (20.7°C) in May, to a moderately hot 76.5°F (24.7°C). Weather in June »

Weather in July

July, like June, in Rohnert Park, California, is a moderately hot summer month, with average temperature fluctuating between 54.5°F (12.5°C) and 79.9°F (26.6°C). The warmest months are July and August, with an average high-temperature of 79.9°F (26.6°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Rohnert Park, California, with average temperature varying between 79.9°F (26.6°C) and 55°F (12.8°C). July and August, with an average high-temperature of 79.9°F (26.6°C), are the warmest months. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Rohnert Park, California, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 79.3°F (26.3°C). In September, the average high-temperature is essentially the same as in August - a still moderately hot 79.3°F (26.3°C). Weather in September »

Weather in October

October, like September, is an agreeable autumn month in Rohnert Park, California, with average temperature varying between 51.8°F (11°C) and 72.3°F (22.4°C). In October, the average high-temperature slightly decreases, from a warm 79.3°F (26.3°C) in September, to an agreeable 72.3°F (22.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Rohnert Park, California, with average temperature varying between 63.5°F (17.5°C) and 46°F (7.8°C). In Rohnert Park, the average high-temperature slightly decreases, from an agreeable 72.3°F (22.4°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 Rohnert Park, is also a moderate month, with average temperature ranging between min 42.4°F (5.8°C) and max 55.6°F (13.1°C). The coldest month is December, with an average high-temperature of 55.6°F (13.1°C) and an average low-temperature of 42.4°F (5.8°C). Weather in December »
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FAQ

How much does it rain in Rohnert Park?

In Rohnert Park, California, during the entire year, the rain falls for 44.3 days and collects up to 3.78" (96mm) of precipitation.

What is the month with the lowest UV index in Rohnert Park?

Months with the lowest UV index in Rohnert Park, California, are January, February, November and December, with an average maximum UV index of 3.

What is the rainiest month in Rohnert Park?

February is the month with the most rainfall in Rohnert Park. Rain falls for 5.3 days and accumulates 0.91" (23mm) of precipitation.

What is the most humid month in Rohnert Park?

With an average relative humidity of 77%, March is the most humid month in Rohnert Park.

What is the driest month in Rohnert Park?

Months with the least rainfall are June through September Rain falls for 0.8 days and accumulates 0.04" (1mm) of rain.

When are the longest days in Rohnert Park?

June has the longest days of the year, with an average of 14.8h of daylight.

What is the month with the highest UV index in Rohnert Park?

June is the month with the highest UV index in Rohnert Park, California, with an average maximum UV index of 6.

What are the warmest months in Rohnert Park?

July and August, with an average high-temperature of 79.9°F (26.6°C), are warmest months in Rohnert Park.

What month has the most sunshine in Rohnert Park?

July has the most sunshine of the year in Rohnert Park, with an average of 11.9h of sunshine.

What is the least humid month in Rohnert Park?

September is the least humid month in Rohnert Park, California, with an average relative humidity of 62%.

What is the coldest month in Rohnert Park?

December is the coldest month in Rohnert Park, with an average high-temperature of 55.6°F (13.1°C) and an average low-temperature of 42.4°F (5.8°C).

What is the month with the shortest days in Rohnert Park?

The month with the shortest days in Rohnert Park is December, with an average of 9.5h of daylight.

What is the month with the least sunshine in Rohnert Park?

December has the least sunshine of the year in Rohnert Park, with an average of 5.7h of sunshine.

Average temperature
Rohnert Park, CA

Average temperature - Rohnert Park, CA

The warmest months (with the highest average high temperature) are July and August (79.9°F).
The month with the lowest average high temperature is December (55.6°F).

Months with the highest average low temperature are August and September (55°F).
The coldest month (with the lowest average low temperature) is December (42.4°F).

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Average pressure
Rohnert Park, CA

Average pressure - Rohnert Park, 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
Rohnert Park, CA

Average wind speed - Rohnert Park, CA

The windiest month (with the highest average wind speed) is May (6.8mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).

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Average humidity
Rohnert Park, CA

Average humidity - Rohnert Park, CA

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).

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Average rainfall
Rohnert Park, CA

Average rainfall - Rohnert Park, CA

The wettest month (with the highest rainfall) is February (0.91").
The driest months (with the least rainfall) are June, July, August and September (0.04").

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Average rainfall days
Rohnert Park, CA

Average rainfall days - Rohnert Park, CA

The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (0.5 days).

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Average daylight / Average sunshine
Rohnert Park, CA

Average daylight / Average sunshine - Rohnert Park, 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: 11.9h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days
Rohnert Park, CA

Average sunshine days - Rohnert Park, CA

The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is March (20.8 days).

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Average UV index
Rohnert Park, CA

Average UV index - Rohnert Park, CA

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

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Average visibility
Rohnert Park, CA

Average visibility - Rohnert Park, 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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