Calgary weather: Highs in the 20s to end the week with scattered showers possible Friday night

Daytime highs across Western Canada will be at least a few degrees above average for most of the next seven to 10 days as a persistent weather pattern continues to dominate.

A well-supported ridge of high pressure has parked over the region and is funnelling warm air into a stable atmosphere—so conditions underneath that ridge will remain fairly consistent over the next few days.

In Calgary, it will be calm and sunny on Thursday with a high of at least 20 C.

A frontal system is expected to cut through northern Alberta early Friday, with the trailing edge potentially reaching central and southern Alberta by the evening.

As the colder air from that low-pressure system crashes into the high from the Pacific basin, there will be a brief period of instability. Winds will shift and come in from the north, and pockets of precipitation are likely—including some minor thunderstorms near the QEII.

Light showers and/or narrow bands of rain will track from northwest to southeast late Friday and early Saturday. Calgary could see some of that rain, but it will be largely unorganized and accumulations will be minimal.

The most noticeable change will be related to wind and temperature, with Saturday’s high expected to be around six degrees colder than Friday or Sunday.

The bulk of the next 10 days will include temperatures that are in the high teens or low 20s in Calgary with lows between 4 C and 7 C.

The normal range in Calgary at this time of year is 14 C for the daily high temperature and 1 C for the low.