Historical weather data, all-time temperature records, and monthly climate averages for Moraga, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
July 23rd is Moraga's statistically hottest day of the year, with an average high of 84° during the Jul 23–29 window. It's also the date of the all-time record: a blistering 114° set in 2006, making it one of the most extreme heat events in this East Bay hills town's recorded history.
Moraga has seen the full spectrum, from a bone-chilling 25° in January 1997 to a scorching 114° in July 2006. That 89-degree spread tells the story of a Mediterranean climate that can push hard in both directions when conditions align.
Moraga is at its warmest from July through September, with average highs in the low-to-mid 80s, while December and January cool things down to the low 50s. Rain falls almost exclusively in winter, making May through October essentially dry — ideal if you're planning outdoor time, but plan around the heat if you're visiting in late July or August.