HAPPINESS
IS A WARM CUP
September 21, 2025 1:58 pm
Southern California Overview:
- Monsoonal moisture will begin to move north again today. There is a slight chance of thunderstorms over the coastal waters near Catalina Island this morning and in the mountains this afternoon. The chance of showers and thunderstorms will expand to all areas Monday night into Tuesday when the monsoon reaches its peak. This may continue into Wednesday before the monsoon weakens.
- Clusters of thunderstorms will continue through early this week across portions of the Midwest southwest through the central/southern Plains with threats of flash flooding and severe weather. Scattered showers and thunderstorms expected across the Southwest/California with isolated flash flooding possible. Above average temperatures are expected across much of the central and eastern U.S., with near to below average temperatures across the West as Summer draws to a close.