From Frosty Mornings to Summer Thunder – Weather Mood Swings in Full Swing
Sunday, June 15 – A Chilly Morning Warms to a Sunny Afternoon
It’s a crisp and clear morning in Thunder Bay, with temperatures starting at just 2.8°C as of 7:00 AM EDT, under mainly sunny skies. The air is quite saturated, with 100% humidity and a matching dew point of 2.8°C, meaning the early morning chill might be accompanied by some patchy dew or frost. The wind from the west-northwest is light at 6 km/h, and visibility is excellent at 32 km. Atmospheric pressure is holding steady at 102.4 kPa, a sign of stable weather today.
The forecast promises a sun-soaked Sunday with temperatures climbing to a comfortable high of 19°C. Perfect weather for a walk by the lake or a backyard BBQ — just don’t forget the sunscreen! The UV index hits a very high 9, so even though it’s cool, the sun means business.
For the young and young at heart the splash pad at Prince Arthur’s Landing opens today!
Tonight – Clear Then Cloudy with Possible Showers
This evening starts out clear, but skies will become partly cloudy overnight with a 30% chance of showers rolling in. The low dips to 7°C, making it a bit brisk — you might want to close those windows before bedtime.
Monday, June 16 – From Sunshine to Storm Risk
Get ready for an active Monday. The day starts with a mix of sun and cloud and a 30% chance of morning showers, but as the day progresses, instability increases. By the late afternoon, there’s a 60% chance of showers with the risk of thunderstorms as warmer air surges into the region.
Expect temperatures to climb to a high of 24°C, and while the humidex sits around 25, it’ll feel just a touch muggy. The UV index remains very high at 9, so make sure to plan indoor options if storm clouds build.
Tuesday, June 17 – Unsettled and Mild
Tuesday continues the unsettled pattern with cloudy skies and a 40% chance of showers throughout the day. The high will reach a pleasant 23°C, with cloudy periods lingering into the evening, and an overnight low of 11°C.
What to Wear
This morning? You’ll want layers and maybe even a light toque or gloves if you’re heading out early. By midday, a light jacket or sweater will do. Monday will call for umbrella insurance – stash one in your bag just in case those afternoon boomers get going. And no matter what, don’t forget your sunscreen.
Weather Trivia – A Record Frost, Then Sunburn?
Thunder Bay’s wide temperature swings are famous. The record low for June 15? A frosty -1.1°C in 1965. Yet with a UV index of 9, you could be bundling up in the morning and burning by lunch. Only in the north!
