Historical weather data, all-time temperature records, and monthly climate averages for Chino, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Chino is a mild, nearly rain-free day — historically speaking. Highs land around 74° on average, though the date has swung anywhere from a 39° cold snap in 1999 to an 86° scorcher in 1991. There's only an 8% chance of any precipitation, so leave the umbrella at home.
Chino runs hot — and the numbers prove it. The all-time high of 112° set on September 6, 2024 is about as brutal as Southern California gets, while the coldest recorded day barely dipped to 30° back in January 2002. On the rare occasion it does rain hard, it really rains: a single January day in 2010 dropped 6.73 inches.
Chino is warm year-round, with monthly average highs that never dip below 69° even in the dead of winter. The peak of summer heat arrives in late August and early September, when highs average around 88–90°, while the wettest stretch of the year falls in late February with just under an inch of rain per week. If you want sunshine and mild warmth without the summer intensity, spring and fall are your sweet spots.