Winnipeg Weather: From Morning Fog to Afternoon Sunshine, with Smoke on the Horizon

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Manitoba Legislative Building in Winnipeg. Winnipeg , Manitoba, Canada
Manitoba Legislative Building in Winnipeg. Winnipeg , Manitoba, Canada

A Damp, Breezy Start to Sunday

Winnipeg – Weather – Winnipeg begins this August morning under mostly cloudy skies, with the thermometer reading 15.5°C at 6:00 AM. The dew point matches exactly at 15.5°C, giving the city a blanket of 100% humidity. Winds from the west-northwest at 21 km/h add a bit of a chill to the dampness, while barometric pressure sits at 100.7 kPa and is on the rise. Early risers may spot a few lingering fog patches, though visibility is currently a healthy 21 km.

Today: Clouds Give Way to Sunshine

Cloud cover will increase early this morning with a 30% chance of showers before the sun takes over for the afternoon. Winds will ease to light breezes, and the temperature will climb to 24°C, feeling closer to 28°C with the humidex. The UV index will reach 6—high enough for sunscreen to be wise if you’re outdoors this afternoon.

Tonight: Clear Skies but Smoky Air

Tonight will remain clear, but a shift in air quality is on the way. Widespread smoke is expected to drift into the region late this evening and persist overnight, possibly impacting those with respiratory sensitivities. The overnight low will settle at a mild 15°C.

Monday: Showers, Thunder, and Morning Smoke

Monday will start with increasing cloud cover, a few morning showers, and widespread smoke lingering from the night before. By late morning, there’s a risk of thunderstorms, with more showers possible into the afternoon. Winds will freshen from the southwest at 20 km/h, with a high of 23°C and a humidex of 28°C. The UV index will be lower at 3—moderate—thanks to the cloud and smoke cover. Monday night will remain wet with showers and a low of 15°C.

Tuesday: Back to Bright Skies

Tuesday promises a return to sunny skies, a pleasant high of 22°C, and a low of 12°C overnight.

Wardrobe Suggestions

Start with a light jacket this morning to cut the damp breeze, then switch to short sleeves by the afternoon. Sunglasses are a must for later in the day, but if you have respiratory sensitivities, consider limiting time outdoors tonight and Monday morning when smoke levels rise.

Weather Trivia

Did you know? Winnipeg’s “humidex” often makes summer temperatures feel warmer than they actually are, thanks to moisture evaporating from surrounding lakes and rivers. The term “humidex” was invented in Canada in 1965 and remains our uniquely Canadian way of quantifying “sticky heat.”

Historic Temperatures for August 10:
Record high: 37.8°C (1949)
Record low: 3.3°C (1888)

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