It's time to dig out those winter coats and boots...even if it still feels a bit early.
Environment Canada is predicting as much as five centimetres of snow could fall in Calgary on Monday.
"Summer will stick around for one more day in Southern Alberta before an intense cold front moves through on Monday," the weather service reported in a special weather statement Sunday morning.
Northern Alberta is currently experiencing rain, but an "unseasonably cold Arctic airmass" will cause that rain to change to snow on Monday.
And the weather isn't expected to warm up much in the following days.
Monday, Tuesday and Wednesday will all see highs under 10 C, with the low temperatures sliding below the freezing mark.
The weather is gradually expected to improve as the week goes on, with more seasonable temperatures by next weekend.
This is the second report of snow in Alberta recently, after upper elevations in the Rocky Mountains reported snowfall earlier in the week.
Check out some of the images of snow captured in Alberta already this season: