LONG TERM (Saturday through next Tuesday)...
The latest GFS and ECMWF are in good agreement in forecasting large
500mb height falls over the CONUS (east of the Rockies) early next
week, coupled with plenty of very cold arctic air at the surface.
Saturday through Monday our temperatures will be near average, with
lows in the 30s and highs in the 60s. By Monday night or early
Tuesday, however, an arctic cold front may pass through our forecast
area, setting up a 24-hour period of strong cold air advection. As
is often the case this far out, there are model differences
regarding the details of how cold it could get here, but we have
plenty of time to watch.