- Typical variability in September temperatures with the onset of fall conditions evident throughout the western US. Mixed rainfall amounts, with most of it welcomed at the end of a dry run of 45-90 days in the west.
- Current conditions favor cool to seasonal temperatures and drier than average conditions in October throughout the western US. Rains should stay mostly away till mid-month or later.
- The extended forecast calls for much of the same, with a typical fall transition but forecast now calls for a chance of La Niña development, which would tilt the odds to winter being cool/wet in the PNW and cool/dry in California.