Rolling West? Pack an Umbrella and Your Sunglasses
WINNIPEG – WEATHER – If you’re heading west toward Winnipeg today, you’re in for a weather ride that’s part sunshine, part storm threat, and all heat. The Manitoba capital is waking up to clear skies and warm air, but clouds are rolling in quickly—bringing with them the potential for some rumbles of thunder as the day heats up.
Breezy and Balmy Morning, Stormy Potential by Afternoon
As of 6:00 AM CDT, the skies above Winnipeg Richardson International Airport are clear, with the temperature already sitting at 14.9°C. The humidity is a sticky 85%, giving the morning a muggy feel. Winds are blowing in from the south at 21 km/h with gusts up to 31 km/h, adding a bit of a breeze to the balmy air. Visibility is excellent at 23 km, and the barometric pressure is 101.9 kPa and rising, though the atmosphere is far from settled.
Things are heating up fast. Expect increasing cloudiness through the morning with a 60 percent chance of showers developing late this morning into the afternoon, along with a risk of thunderstorms. Temperatures will climb to a high of 24°C, and with the humidex hitting 27, it’ll feel warmer than it looks. Winds will ramp up from the south to 30 km/h, gusting to 50, making it a good day to hold onto your hat.
Historically, Winnipeg’s record high for September 11 is 32.3°C, and the record low a crisp 1.1°C. Today’s forecast is running warm and stormy—pretty typical of this transition month on the Prairies.
Showers and Thunder Persist into the Night
The rain and thunder risk won’t quit at sundown. Tonight, skies will remain cloudy with a 60 percent chance of showers, and thunderstorms are still in the cards. Winds will settle down to south at 20 km/h, becoming light later in the evening. The low stays mild at 17°C, so no need to break out the heavy blankets just yet.
Friday: Sticky, Stormy, and Steamy
Friday, September 12, brings mainly cloudy skies and continued unsettled weather. There’s a 60 percent chance of showers in the morning and early afternoon, again with the risk of thunderstorms. The high will reach 24°C, but with a humidex of 30, it’ll feel positively tropical for a prairie September. The UV index will sit at 5, so sun protection is still relevant, even with the clouds.
Friday night offers some relief, with cloudy periods and a low of 15°C, giving way to a weekend that looks more cooperative.
Weekend Outlook: Summer’s Encore
Saturday and Sunday both promise a mix of sun and cloud with highs of 26°C on both days—perfect for outdoor plans, if a bit steamy. Nights will be warm as well, with lows of 17°C both evenings. Sunday night brings a 30 percent chance of showers, so don’t say goodbye to the umbrella just yet.
What to Wear?
Today and tomorrow are not days for wool or anything remotely fall-ish. Opt for breathable fabrics and rain-friendly footwear, with a light rain jacket in tow. Sunglasses are a must for those clearer moments, and if your hair reacts to humidity… good luck, friends.
Weather Trivia: Prairie Storm Power
Winnipeg’s location makes it a hotspot for fast-changing weather, and it’s no stranger to September thunderstorms. The city’s flat terrain and warm air masses from the south often clash with cooler northern systems this time of year—an ideal recipe for booming skies and dramatic downpours.
