Historical weather data, all-time temperature records, and monthly climate averages for Vista, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Vista runs mild, with highs averaging 71° and virtually no chance of precipitation at 13%. But the date has some range in its history — temperatures have swung from a scorching 101° back in 1989 down to a chilly 37° low as recently as 2023.
Vista's weather has real teeth when it wants to — the mercury has hit 108° (June 1985) and plunged to 21° (January 1963), a nearly 90-degree spread between extremes. The wildest single day on record was February 28, 1991, when 3.26 inches of rain fell, and a remarkable 16 inches of snow blanketed the area on February 26, 2004.
Vista earns its Southern California reputation with monthly highs that never dip below 66° even in the dead of winter, and peak out around 84° in late August and early September. If you're chasing warmth, aim for late summer; if you want to avoid rain, skip late February through early March, the wettest stretch of the year averaging 0.83 inches per week.