Historical weather data, all-time temperature records, and monthly climate averages for Pinole, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Pinole typically feels like a mild late-winter day, with average highs of 66° and lows around 49°. There's a 1-in-4 chance of rain, so don't leave the umbrella at home. The date's range is wide though — it's hit as warm as 83° back in 1989 and dipped to 39° as recently as 2010.
Pinole's weather has real range for a Bay Area town — it's touched 107° in September 1971 and bottomed out at 24° in December 1972. The wettest single day on record dumped 6.83 inches on January 4, 1982, which is a serious soaking by any measure. Snow is essentially a unicorn here, with the all-time record sitting at just 0.1 inches from April 1999.
Pinole runs cool and even by most standards, with highs ranging from just 56° in early January up to 75° in late September. Summer is mild and fog-tempered — July, August, and September all hover in the low-to-mid 70s, making it a reliably comfortable season. If you're trying to dodge rain, aim for summer; peak wet season lands in mid-February, averaging over an inch of precip in a single week.