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Rio Vista, California, gets 17 inches of rain per year. The US average is 39. Snowfall is 0 inches. The average US city gets 26 inches of snow per year. The number of days with any measurable precipitation is 42.

On average, there are 268 sunny days per year in Rio Vista, California. The July high is around 89 degrees. The January low is 38. Sperling's comfort index for Rio Vista is a 84 out of 100, where a higher score indicates a more comfortable year-around climate. The US average for the comfort index is 54. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.

  CLIMATERio Vista, CaliforniaUnited States
  Rainfall (in.)  17.03539.2
  Snowfall (in.)  0.22351825.8
  Precipitation Days  41.5102
  Sunny Days  268205
  Avg. July High  88.95286.1
  Avg. Jan. Low  38.42222.6
  Comfort Index (higher=better)  8454
  UV Index  5.14.3
  Elevation ft.  561,443

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An inviting mix of rural and suburban lifestyles - 3/18/2018
Known as “the Gateway to the Delta”, Rio Vista is located in the heart of the California Delta on the Sacramento River. The views along the wide river bring to mind the... (Read More)

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What you can and can not find in Rio Vista - 4/3/2011
There is plenty to be had in Rio Vista, particularly if you like dead animal heads on a bar wall (Fosters Big Horn) and a state of the art fish cleaning station located... (Read More)

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