Thunder Bay is kicking off with a mix of sun and clouds today, September 8, with a 30% chance of showers and the possibility of a morning thunderstorm. After the clouds clear, the afternoon will see a high of 21°C, with a moderate UV index of 5. As the evening approaches, expect the skies to clear up completely, dropping down to 8°C overnight. Fog patches may develop later tonight.
Looking ahead, Monday, September 9, will be sunny with temperatures climbing to 23°C, feeling like 26°C with the humidex. Monday night will be clear, with temperatures dipping to 11°C. By Tuesday, expect another warm day with a high of 25°C and a mix of sun and clouds, though there’s a 30% chance of showers.
The weather continues to be pleasant through Wednesday and Thursday, with highs of 24-25°C under mostly sunny skies. Nights will stay mild, with lows around 11°C.
Calm Waters and Light Winds for Western Lake Superior and Thunder Bay
For Sunday, September 8, on Western Lake Superior, the marine forecast brings calm conditions with northwest winds at 10 knots, shifting to light winds by afternoon. By the evening, winds will turn south at 10 knots and remain light through the night. These conditions continue into Monday, with south winds at 10 knots in the evening.
Waves will remain calm, starting at 0.5 to 1 metre this morning but subsiding to 0.5 metres or less early in the day. This minimal wave activity will persist into Monday, making it an ideal time for boating or fishing.
As we move into Tuesday, winds will increase to 15 knots from the south, continuing through Wednesday and Thursday, before diminishing by Thursday evening.
Historical Context and Wardrobe Tip
In September, the waters of Lake Superior can be unpredictable, but this week promises steady and light conditions, making it a prime time for safe marine activities.
Wardrobe Tip: For those venturing out on the water, a light jacket should suffice today, though keep layers nearby as wind speeds increase by midweek.
Historical Context:
The typical temperature for early September in Thunder Bay is around 19°C during the day and 6°C at night, so the forecasted highs this week are slightly warmer than average.
Wardrobe Tip: Light layers will be perfect for the sunny afternoons, but a jacket may be needed for the cool evenings.
