Yeah…I had -17 here which tied my coldest. I think that may be the last -20s for CON (-24).
18z gfs comes in colder than 12z. Looks like the coldest of the season is coming…severity tbd.
If we have the same cultivars it doesn't matter. But it's possible the forsythia are hardier here. The rhodies are a bit protected on the east side too.