In fact, the last time it was 11˚F was January 2nd, 2019 and the last time it was colder than 11˚F was January 1, 2019 when it dropped to 6˚F.
During the record October cold stretch we got down to 14˚F on October 30th. It took us a while, but we finally eclipsed that.
If you want to feel even colder than 11˚F, go to areas that see easterly flow. The map below shows barbs with gusts in text next to each site. Some bench sites near Farmington and Bountiful show easterly flow with gusts of 25, 27, and 29 mph. At the University of Utah, east winds are gusting into the teens on upper campus (lower campus at this time was less breezy). Finally, the mouth of Parley's and Millcreek area is seeing gusts over 20 mph.
Alta Base: -3˚F
Hidden Peak: -9˚F
Solitude Base: -9˚F
Kimball Junction: -9˚F
Swanson's/North Fork: -1˚F
Peter Sinks: -32˚F