Historical weather data, all-time temperature records, and monthly climate averages for Modesto, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Modesto typically feels like a proper spring day, with average highs of 71° and lows around 46°. There's a modest 23% chance of rain, though snow is essentially off the table. The date has swung wildly in the past — from a scorching 90° in 1960 to a near-freezing 34° back in 1945.
Modesto doesn't do things halfway — its all-time high of 113° in July 2006 puts it firmly in Central Valley furnace territory, while the record low of 18° in January 1949 proves winters can still bite. Rain is rare but occasionally dramatic; a single March day in 1978 dropped 2.72 inches, and the city even saw 1.5 inches of snow in January 1962.
Modesto follows a classic Central Valley rhythm: mild, dry springs give way to a long, blazing summer that peaks around July 9–15 with average highs of 95°. Temperatures ease through fall before settling into cool, damp winters — the wettest stretch runs late December, and January highs barely crack 54°. If you're heat-averse, stick to November through March; otherwise, summers here are reliably hot and bone dry.