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Keen temperature drop may bring frost, snow to parts of the Prairies

Monday, September 13th 2021, 11:14 pm - A late-summer chill will descend over the Prairies this week. Calgary could dip close to the freezing mark on Wednesday and snowflakes may find their way into areas along the foothills.

Chilly weather is on the way for parts of the Prairies this week. A trough settled in B.C. and Alberta will bring a shot of much cooler air with fall-like temperatures. This will lead to single-digit temperatures early Wednesday morning and overnight in Alberta, cold enough to bring high-elevation snow along the foothills. However, some of the snowflakes could reach their way into lower elevations Wednesday night as temperatures drop close to the freezing mark. There may be frost, so those with plants in affected regions are urged to cover them up. More on what's ahead for the final days of summer, below.

TUESDAY: SLIGHT WARM-UP, MOSTLY PLEASANT ACROSS THE PRAIRIES

Tuesday will be a mostly pleasant days across most of the Prairies with abundant sunshine and daytime highs sitting into the low 20s. Parts of Alberta will be a few degrees warmer than it has been in recent days, but that won't last long.

A departing low-pressure system on eastern Prairies will bring the chance of thunderstorms to parts of eastern Manitoba and northwestern Ontario in the afternoon.

PRTues

Any storms that do develop should remain non-severe in nature, however, and may bring heavy rainfall.

WEDNESDAY: POTENTIAL FOR FIRST SNOWFLAKES OF THE FALL, CHILLY TEMPERATURES

By Wednesday, the upper-level trough will begin to bring about a temperature plummet. Calgary’s expected low of 2°C (normal low is around 4°C) on Wednesday morning will be chilly enough for frost to develop in spots.

1A1A1APRRTEMPWED (Sept 13)

Frost advisories are currently in effect, warning that it may damage some crops in frost-prone areas.

"Cover up plants, especially those in frost-prone areas," Environment and Climate Change Canada (ECCC) says in the advisory.

The colder weather will bring snow in high elevations Wednesday morning, but that might trickle into lower-elevation regions overnight when temperatures will dip close to the freezing mark.

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Meanwhile, on the eastern side of the Prairies, showers and thunderstorms are expected with the cold front for southern Manitoba Wednesday afternoon.

LOOK AHEAD: STAYING COOL IN ALBERTA, ANOTHER THREAT FOR FROST

Beyond Wednesday, temperatures will remain several degrees below seasonal across Alberta for the second half of this week.

A threat for frost will return to parts of Alberta late week. In northern sections of the Prairies, widespread wind and rain is expected late week as a system tracks across the region.

Changeable temperatures will be in the picture next week.

Be sure to check back for the latest forecast updates across the Prairies.

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