Summer is back… but for how long?
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A Summer Flash in October Before the Cooldown Arrives
If you like warm weather, this stretch is for you. A ridge of high pressure to the southeast of Atlantic Canada is delivering an early-October taste of summer — but it won’t last long.
Across the Island today, temperatures sit in the mid-teens, while Labrador has been basking in highs in the upper-teens to low-20s. That warm air will spill over the Island Tuesday and linger through mid-week. In fact, places like St. John’s and Placentia could reach the upper-teens to near 20 °C, which would mark the 82nd day this year at or above 20 °C — an impressive run for Newfoundland.
Meanwhile, heat across the Maritimes has been remarkable for October: Fredericton hit 30 °C Monday, with similar readings across New Brunswick and Nova Scotia. But cooler air is already building to the west, and it’s on the move.
The Pattern Shift Mid-Week
By late Wednesday and Thursday, that warm ridge slides east as a trough — and a cold front — push in from central Canada. This will bring a sharp cooldown across Labrador first, then Newfoundland. Highs drop from the 20s into the single digits in many areas by Friday.
Eastern Newfoundland: Warm through Thursday, then much cooler Friday with highs near 9 °C.
Central & Western Newfoundland: Rain develops late Wednesday, with temperatures falling through Thursday.
Labrador: One more mild day Tuesday in the southeast before the chill sets in — and yes, flurries could be flying in Lab West by Wednesday morning.
Rain Returns — But Not a Soaker for Everyone
Rain will become more widespread Wednesday night into Thursday, especially along the south and east coasts. Some heavier bands may bring 20–40 mm for areas like Trepassey or Bay Roberts, though totals will vary. Western and northern parts of the Island may see 10–20 mm, while Labrador could pick up 15–25 mm before the system exits.
By late week, temperatures will feel much more like fall, with scattered showers and brisk northwest winds settling in.
Watching the Tropics
Farther south, one area of disturbed weather — Invest 95L — in the Atlantic has about a 70% chance of becoming a tropical cyclone in the next seven days. If it does strengthen, it’ll take the next name on the 2025 list: Jerry.
(Yes… “Hello, Jerry.” Couldn’t resist.)
Bottom Line
Enjoy the warmth while it lasts — Tuesday and Wednesday will feel more like late August than early October. By Thursday, it’s back to sweaters and raincoats, and by the weekend, some parts of Labrador could even see their first snowflakes of the season.
