Historical weather data, all-time temperature records, and monthly climate averages for Oakley, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Oakley typically lands in comfortable spring territory, with an average high of 70° and low of 46° across 64 years of records. The date has seen real swings though — from a warm 87° back in 1960 to a chilly 35° low in 1975. Rain is unlikely but not impossible, with just a 16% chance of precipitation.
Oakley's weather has some serious range baked into its history. The all-time high of 117° in June 1961 puts it firmly in Central Valley extremes territory, while an 18° low in December 1972 proves winters can bite. A single October day in 1962 dumped over 3 inches of rain — a reminder that fall storms here can arrive fast and heavy.
Oakley runs hot in summer and mild in winter, with highs climbing from 55° in January to a peak of 92° during the second week of July. If heat isn't your thing, the sweet spots are spring and fall — April through October covers a wide range, so aim for May or October for warmth without the triple digits. Rain is almost entirely a winter and early spring story, with mid-February being the wettest stretch of the year.