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Fall Arrived Today – Evening Weather Update

By Eddie Sheerr·September 22, 2025 · 2:40 PM

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The Fall Equinox (not my EV)

Why today? It’s the equinox – the sun was directly over the equator, which means most places on Earth saw about 12 hours of daylight and 12 hours of night. The further you are from the equator, the less exact that split is. From here on, the sun continues its journey south, bringing summer to the southern hemisphere and shorter days for us in the north. By December 22, we’ll have nearly four hours less daylight than we do now.

This forecast is sponsored by CU Financial Management. Visit CUFM.ca for expert financial advice.

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Tonight & Tomorrow

• Showers from Labrador West will move into western Newfoundland, the Northern Peninsula, and southeast Labrador overnight.

• Tomorrow looks mostly cloudy across the island, with mild temperatures in the mid to upper teens for central, southern, and eastern areas.

• Northern Peninsula: periods of rain (5–15 mm likely).

• West coast: scattered showers.

• Labrador West: mostly cloudy, while the coast gets some sunshine.

• Temperatures in the teens for most areas once again.

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Midweek Outlook

High pressure builds Wednesday and Thursday, giving us a quieter pattern overall.

• Wednesday: Cooler, with highs in the low to mid-teens on the island, especially north with onshore winds. Labrador stays milder mid to late week before cooling again. There will be some showers to start the day for central, northeast, and eastern Newfoundland.

• Thursday & Friday: A rebound into the upper teens, near 20 for some spots. St. John’s could notch its 82nd day at or above 20°C this year!

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Late Week

The next bigger weather system looks to arrive Friday, bringing a better chance of widespread rain.

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Tropics Update

Two areas in the Atlantic are being watched for development. One system has a 70% chance of becoming a tropical storm in the next week.

Hurricane Gabrielle is currently a Category 3 east of Bermuda. It looks impressive on satellite, but the good news is the jet stream will push it off to the east, toward the open Atlantic and possibly Europe by the weekend.

For us, the main impact will be larger-than-normal swells along southern and eastern shorelines later this week. If you head out to watch the waves, keep your distance – the surf can run higher than expected without warning.

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Final Thoughts

Overall, it’s a mild and mostly quiet week ahead, with the bigger rain chance Friday and some tropical activity worth monitoring.

As always, you can get the latest forecasts, push alerts, and radar right in the Sheerr Weather app on the App Store and Google Play. Direct links are also on sheerrweather.ca.

See you tomorrow morning with the next update!