Nicasio, CA Climate


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Nicasio, CA enjoys a mild climate throughout the year. It has hot summers with average highs in the upper 80s and cool winters with average lows in the mid-40s. The area receives just under 20 inches of rain each year, mostly during the winter months. The area is also relatively dry and sunny with over 300 days of sunshine annually. The beautiful weather makes Nicasio a great destination for outdoor activities.

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Nicasio is 8.4 (10=best), which means it is more comfortable than most places in California.

9.6 Summer - 7 Winter
August, July and September are the most pleasant months in Nicasio, while January and December are the least comfortable months.

  ClimateNicasio, CaliforniaUnited States
  40.5 in.38.1 in.
  0.0 in.27.8 in.
  77.7 days106.2 days
  260 days205 days
  81.4°85.8°
  40.9°21.7°
  8.47
  5.24.3
  194 ft.2443 ft.
Climate
YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Nicasio with an average high temperature of 81.4°, which ranks it as cooler than most places in California. In Nicasio, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Nicasio are June, September and August.
In Nicasio, there are 17.8 days annually when the high temperature is over 90°, which is cooler than most places in California.
December has the coldest nighttime temperatures for Nicasio with an average of 40.7°. This is warmer than most places in California.
In Nicasio, there are 6.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.
In Nicasio, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.
Humidity in Nicasio is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are August, July and September.
December is the wettest month in Nicasio with 8.3 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 59% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 40.5 inches in Nicasio means that it is wetter than most places in California.
January is the rainiest month in Nicasio with 12.8 days of rain, and July is the driest month with only 0.9 rainy days. There are 77.7 rainy days annually in Nicasio, which is rainier than most places in California. The rainiest season is Spring when it rains 48% of the time and the driest is Autumn with only a 5% chance of a rainy day.
There is rarely any recorded snowfall in Nicasio, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in Nicasio.
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