At this time of year, there are a lot of 1-Day SALES. Well, this is a 1-day COLD SNAP.
After today...warmer air will sweep in from the WNW.  (and this time, it WILL makes it's way into E-Ctl & NE Alta)

As for today-an arctic high pressure system centred just north of Saskatchewan is shoving some cold air into the province.
After hitting +2 yesterday afternoon in Edmonton, we've been sitting near -15 this morning & will fall to around -20 this afternoon.
Not much for snow accumulation, but some occasional light flurries will persist this morning.  Should be just mostly cloudy this afternoon in Edmonton.
Skies will clear out in NW Alta this afternoon & that clearing should hit the Edmonton area by this evening.
The good news is that the wind should stay light for most of today.
It WILL likely pick up this evening & with temperatures hitting -23 or -24 this evening, it's going to FEEL more like -30 this evening in the Capital Region. overnight warm-up will push us back to the -12 range by Thursday morning & up to about -7 Thursday afternoon.
Warming to about -3 or -4 Friday & then highs in the -5 to -10 range for Sat/Sun/Mon.
Colder air is expected to drop back in around the middle of next week.

Edmonton Forecast looks like this:

Today - Occasional morning flurries. Mostly cloudy this afternoon.
Falling to -18 this afternoon.

Tonight - Clearing.
-23 this evening, warming overnight.

Thursday - Increasing cloud.
Morning:  -12
Afternoon:  -7

Friday - Mostly cloudy.
High:  -4

Saturday - Mix of sun & cloud.
High:  -7

Sunday - Mostly cloudy.  
High:  -7

Monday - Mostly cloudy.
High:  -8