Happy Friday, Central Oregon.
A ridge of high pressure over the region will flatten over the weekend as a weather system passes.
There will not be much, if any, wind associated with it but there will be air that's a little cooler.
On Friday night, lows will be in the low 20s to low 30s, which is average for this time of year.
The slightly cooler air will lower temperatures in the mountains this weekend but will not have much impact on temperatures in lower elevations.
On Saturday, highs will be just above average in the high 50s to low 60s.
On Monday night through Friday, the broad upperr-level ridge off the eastern Pacific and the western U.S. will begin to show signs of breaking down.
Highs on Monday will be slightly cooler than Sunday and will be mostly in the high 50s.
The ridge will flatten Monday night, allowing mid- and high-level clouds to spread across the Pacific Northwest with lows again in the upper 20s and low 30s.
Models agree that a fast-moving shortwave low-pressure system
that will override the ridge and travel across the region Tuesday and Tuesday night.
The system will bring light showers along the Cascades and the eastern mountains with snow above 7,000 feet.
The high-pressure ridge will reverse Tuesday but return for dry and stable conditions Wednesday and Wednesday night.