Rio Vista, CA Weather & Climate Normals
Rio Vista's real weather, in one number
Rio Vista, CA scores 64/100 on this site's reading of NOAA's own 30-year normals: mild with real seasons. A solid stretch of comfortable months alongside a noticeable but not extreme summer or winter. 7 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Rio Vista's hottest and coldest months
Rio Vista's hottest month is Jul, averaging 76°F; its coldest is Jan, averaging 48°F, a 28°F swing across the year, a middling gap by national standards.
Rain and snow in Rio Vista
Rio Vista averages 12.6in of precipitation a year across roughly 50 days with measurable rain or snow, and 0in of snow a year.
Where Rio Vista ranks
Rio Vista ranks 345 of 4876 US cities in this dataset for comfort score, and 284 of 429 within CA. About 10,248 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from ANTIOCH PUMPING PLT #3, CA US, 13.6 miles from Rio Vista, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station