Snow is rare in Diablo
Diablo has warm winters and pleasant summers. A typical July afternoon reaches 84°, a January night drops to 42°, and snow is almost unheard of. In November, a normal day reaches 61° and a normal night drops to 46°.
Getting the latest forecast from the National Weather Service…
What stands out about Diablo’s weather
Read from 30 years of NOAA records. Each one opens the full story on the Climate page.
Where today sits in Diablo’s year
Typical highs and lows month by month, from 30 years of NOAA records.
Weather talk
Road reports, first frosts and storm memories from neighbors in Diablo.
Your answer becomes a post in Town Square.
Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Diablo itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Mt Diablo Junction, CA (3 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.