Snow is rare in Napa
Napa has mild winters and warm summers. A typical July afternoon reaches 86°, a January night drops to 38°, and snow is almost unheard of. In November, a normal day reaches 66° and a normal night drops to 42°.
Getting the latest forecast from the National Weather Service…
What stands out about Napa’s weather
Read from 30 years of NOAA records. Each one opens the full story on the Climate page.
Where today sits in Napa’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 Napa.
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 Napa itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Napa State Hospital, CA (2 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.