Cooler Weather Pushing In

A cold trough pushing into Manitoba will bring showers today and with cold air building over the province, showers may turn to flurries tonight as temperatures drop. The arrival of cooler air will mark a notable regime change which will leave us in a stagnant pattern with slightly below-normal temperatures.

Friday

7°C / -2°C
Becoming mainly cloudy; showers in the afternoon.
Saturday

5°C / -2°C
A mix of sun and cloud; becoming cloudy in the evening.
Sunday

2°C / -4°C
Mostly cloudy; scattered flurries.

Today will bring increasing cloud this morning which will give way to afternoon showers as a trough slumps through Southern Manitoba. The chance for showers will be very high through Winnipeg & the northern Red River Valley, but through the southern half of the Red River Valley it seems like the showers will be more scattered in nature. Our daytime high of around 7°C will be a couple degrees below our seasonal average of 9°C, and it’s only going to go downhill from there.

Areas that may see lake-effect showers or flurries on Friday night.

Areas that may see lake-effect showers or flurries on Friday night.

We’ll see the showers die off through the evening hours, but it won’t be the end of things; as temperaturs drop in the evening, lake effect showers or flurries will develop in the lee of Lake Winnipeg and Lake Manitoba. Here in Winnipeg it seems like we’ll just see a slight chance of seeing showers or flurries overnight, however to the west and east of the city it looks quite probable.

For the areas that do see precipitation tonight, it may be the first snowfall of the season. While there won’t be much snow and it likely won’t stick, it would not be surprising at all if there were some white flakes falling from the sky tonight. Most areas will see partly cloudy skies tonight save for those underneath the lake-effect cloud and precipitation. Lows will dip to around –2°C with areas under cloud a little bit warmer.

Saturday will be a cool day with a high around 5°C under a mix of sun and cloud. More cloud will push into the Red River Valley late in the afternoon or in the evening as a system diving southwards through Saskatchewan into SW Manitoba spreads some cloud into the Red River Valley. No precipitation is expected at this point for Saturday. Saturday night will be quite cool under partly cloudy skies and lows near –4 or –5°C.

Sunday will bring more cloud into Winnipeg & the Red River Valley as more cool air and instability builds into the Red River Valley. Temperatures will be even cooler than Saturday with highs of only 2–3°C which will make what’s falling out of those clouds more likely to be of the frozen variety than the liquid. Again, not much accumulation is expected, but it may be the first snowfall of the season for many places.

Looking Ahead

We’ll be into a much cooler pattern through the next week with daytime highs sitting near 4 or 5°C through much of the week. It looks like we’ll see a disturbance mid-week bring a chance of showers for most of Southern Manitoba, but nothing in the way of significant (or measurable) accumulations is on the way.

Brad

Brad

Brad lives in Winnipeg with his wife and two children and is the founder of A Weather Moment. He has loved weather from a very young age and has followed that passion through his life so far. He has received a B.Sc. in Earth Sciences with Specialization in Atmospheric Sciences and is currently employed in the field of meteorology.You can find the author as @WeatherInThePeg on Twitter.