Climate and monthly weather forecast
Nicasio, CA

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Weather in January

January in Nicasio, California, is a moderate winter month, with temperature in the range of an average high of 56.3°F (13.5°C) and an average low of 44.2°F (6.8°C). The beginning of January records an average high-temperature of a refreshing 56.3°F (13.5°C), almost echoing the conditions of the previous month. Weather in January »

Weather in February

The last month of the winter, February, is another refreshing month in Nicasio, California, with an average temperature varying between 45°F (7.2°C) and 58.6°F (14.8°C). With the onset of February, Nicasio's average high-temperature clocks in at a still moderate 58.6°F (14.8°C), showing a minor fluctuation from the previous month. Weather in February »

Weather in March

The first month of the spring, March, is also a moderate month in Nicasio, California, with temperature in the range of an average high of 59.9°F (15.5°C) and an average low of 46°F (7.8°C). March's beginning signals an average high-temperature of a still refreshing 59.9°F (15.5°C), barely different from February's 58.6°F (14.8°C). Weather in March »

Weather in April

April in Nicasio, California, is a refreshing spring month, with temperature in the range of an average low of 47.1°F (8.4°C) and an average high of 64°F (17.8°C). Nicasio's weather, upon April's arrival, documents an average high-temperature of an enjoyable 64°F (17.8°C), nearly identical to the prior month. Weather in April »

Weather in May

May, the last month of the spring in Nicasio, is another refreshing month, with an average temperature fluctuating between 67.1°F (19.5°C) and 49.5°F (9.7°C). May commences with an average high-temperature of a still enjoyable 67.1°F (19.5°C), showing little deviation from April's 64°F (17.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in Nicasio, California, with an average temperature ranging between max 72.5°F (22.5°C) and min 53.1°F (11.7°C). The onset of June marks a slight increase in the average high-temperature, moving from an enjoyable 67.1°F (19.5°C) in May to a pleasant 72.5°F (22.5°C). Weather in June »

Weather in July

July is a moderately hot summer month in Nicasio, California, with an average temperature ranging between max 74.7°F (23.7°C) and min 54.1°F (12.3°C). The advent of July brings an average high-temperature of a warm 74.7°F (23.7°C), almost identical to the preceding month. Weather in July »

Weather in August

August, the last month of the summer in Nicasio, is another warm month, with an average temperature ranging between max 75°F (23.9°C) and min 55.4°F (13°C). With the advent of August, Nicasio's high-temperatures adjust to a still moderately hot 75°F (23.9°C), closely aligning with the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Nicasio, is also a moderately hot month, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 75.4°F (24.1°C). September, characterized by an average high temperature of 75.4°F (24.1°C) and a low temperature of 55.8°F (13.2°C), is generally the warmest month. Weather in September »

Weather in October

October, the same as September, in Nicasio, California, is another pleasant autumn month, with an average temperature ranging between max 70.5°F (21.4°C) and min 53.4°F (11.9°C). Stepping into October, Nicasio records an average high-temperature of a pleasant 70.5°F (21.4°C), almost consistent with September. Weather in October »

Weather in November

November, the last month of the autumn in Nicasio, is another refreshing month, with an average temperature varying between 48.4°F (9.1°C) and 62.2°F (16.8°C). November is characterized by a mild reduction in the average high-temperature, from an agreeable 70.5°F (21.4°C) in October to a refreshing 62.2°F (16.8°C). Weather in November »

Weather in December

December, the first month of the winter in Nicasio, is still a cool month, with an average temperature varying between 55.2°F (12.9°C) and 43.9°F (6.6°C). December, known for its average high temperature of 55.2°F (12.9°C) and an average low temperature of 43.9°F (6.6°C), is the coldest month. Weather in December »

Frequently asked questions

How many days does it rain in Nicasio?

In Nicasio, California, during the entire year, the rain falls for 68.4 days and collects up to 7.28" (185mm) of precipitation.

What is the month with the lowest UV index in Nicasio?

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

What is the wettest month in Nicasio?

The month with the most rainfall is February, when the rain falls for 7.7 days and typically aggregates up to 1.65" (42mm) of precipitation.

What is the most humid month in Nicasio?

The most humid month in Nicasio is March, with an average relative humidity of 77%.

When is Daylight Saving Time (DST) in Nicasio?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When are the longest days in Nicasio?

With an average of 14h and 48min of daylight, June has the longest days of the year.

When is the highest UV index in Nicasio?

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

What is the driest month in Nicasio?

The months with the least rainfall in Nicasio are July through September Rain falls for 2.5 days and accumulates 0.08" (2mm) of rain.

What month has the most sunshine in Nicasio?

July has the most sunshine of the year in Nicasio, with an average of 11.8h of sunshine.

What is the warmest month in Nicasio?

September, known for its average high temperature of 75.4°F (24.1°C) and an average low temperature of 55.8°F (13.2°C), is the warmest month.

What is the least humid month in Nicasio?

The least humid month is October, with an average relative humidity of 66%.

What is the coldest month in Nicasio?

Nicasio's coldest weather arrives in December, when temperatures average a high of 55.2°F (12.9°C) and a low of 43.9°F (6.6°C).

What is the month with the shortest days in Nicasio?

December has the shortest days of the year, with an average of 9h and 36min of daylight.

What is the month with the least sunshine in Nicasio?

The month with the least sunshine is December, with an average of 5.6h of sunshine.

Average temperature
Nicasio, CA

Average temperature - Nicasio, CA

The warmest month (with the highest average high temperature) is September (75.4°F).
The month with the lowest average high temperature is December (55.2°F).

The month with the highest average low temperature is September (55.8°F).
The coldest month (with the lowest average low temperature) is December (43.9°F).

Average pressure
Nicasio, CA

Average pressure - Nicasio, CA

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

Average wind speed
Nicasio, CA

Average wind speed - Nicasio, CA

The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (5.1mph).

Average humidity
Nicasio, CA

Average humidity - Nicasio, CA

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (66%).

Average rainfall
Nicasio, CA

Average rainfall - Nicasio, CA

The wettest month (with the highest rainfall) is February (1.65").
The driest months (with the least rainfall) are July, August and September (0.08").

Average rainfall days
Nicasio, CA

Average rainfall days - Nicasio, CA

The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is June (2 days).

Average daylight / Average sunshine
Nicasio, CA

Average daylight / Average sunshine - Nicasio, CA

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

Average sunshine days
Nicasio, CA

Average sunshine days - Nicasio, CA

The month with the most sunshine days is October (24.9 days).
The month with the least sunshine days is March (18.5 days).

Average UV index
Nicasio, CA

Average UV index - Nicasio, CA

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

Average visibility
Nicasio, CA

Average visibility - Nicasio, 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).

Nicasio, California, USA

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