Current Conditions

Thunder Bay, Ontario

68°F20°C

Partly Cloudy

Wind

W 3 mph6 km/h

Humidity

71%

Cloud Cover

70%

As of Wednesday, September 2, 2026 at 8:20 PM EDT

Today's Outlook

Night

Mostly cloudy, with a low around 63°F17°C. Light wind from the NW around 4 mph6 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 70°F21°C	Low 63°F17°C	Precip 0 in0.1 mm3%	Cloud 76%	Wind W 5 mph7 km/h	Wednesday: Overcast and warm, with a high of 70°F21°C. Light wind from the W around 5 mph9 km/h. Wednesday Night: Mostly cloudy, with a low around 63°F17°C. Light wind from the NW around 4 mph6 km/h.
Partly Cloudy	High 69°F20°C	Low 58°F14°C	Precip 0 in0.1 mm3%	Cloud 53%	Wind ENE 5 mph8 km/h	Thursday: Mostly cloudy and warm, with a high of 69°F20°C and morning low of 58°F14°C. Light wind from the E around 5 mph8 km/h. Thursday Night: Partly cloudy, with a low around 58°F14°C. Light wind from the NE around 4 mph7 km/h.
Showers	High 67°F19°C	Low 59°F15°C	Precip 0.08 in2.1 mm35%	Cloud 55%	Wind E 8 mph12 km/h	Friday: Mostly cloudy and mild, with a high of 67°F19°C and morning low of 60°F15°C. Breezy from the E at 9 to 10 mph15 to 16 km/h. 35% chance of showers throughout the day. Friday Night: Mostly cloudy, with a low around 59°F15°C. Breezy from the E at 6 to 7 mph9 to 12 km/h. 12% chance of drizzle before dawn.
Clear	High 69°F20°C	Low 59°F15°C	Precip 0 in0.1 mm3%	Cloud 40%	Wind E 5 mph9 km/h	Saturday: Partly cloudy and warm, with a high of 69°F20°C and morning low of 59°F15°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. Saturday Night: Partly cloudy, with a low around 59°F15°C. Light wind from the E around 5 mph8 km/h.
Drizzle	High 69°F21°C	Low 59°F15°C	Precip 0.05 in1.2 mm17%	Cloud 72%	Wind ESE 5 mph8 km/h	Sunday: Overcast and warm, with a high of 69°F21°C and morning low of 59°F15°C. Light wind from the ESE around 5 mph8 km/h. 11% chance of drizzle in the afternoon. Sunday Night: Mostly cloudy, with a low around 59°F15°C. Light wind from the E around 4 mph7 km/h. 17% chance of drizzle in the evening.
Light Rain	High 65°F18°C	Low 60°F16°C	Precip 0.12 in3 mm30%	Cloud 91%	Wind E 9 mph14 km/h	Monday: Overcast and mild, with a high of 65°F18°C. Breezy from the E at 9 to 10 mph15 to 17 km/h. 25% chance of drizzle throughout the day. Monday Night: Overcast, with a low around 61°F16°C. Breezy from the E at 8 to 11 mph13 to 17 km/h. 30% chance of light rain throughout the night.
Rain	High 68°F20°C	Low 62°F17°C	Precip 0.58 in14.7 mm74%	Cloud 89%	Wind S 11 mph18 km/h	Tuesday: Overcast and warm, with a high of 68°F20°C and morning low of 63°F17°C. Breezy from the S at 12 mph19 km/h. 74% chance of rain throughout the day. Tuesday Night: Overcast, with a low around 62°F17°C. Breezy from the S at 11 to 12 mph17 to 19 km/h. 60% chance of rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	70°F21°C	63°F17°C	0 in0.1 mm· 3%	76%	Partly Cloudy	W 5 mph7 km/h
DayOvercast and warm, with a high of 70°F21°C. Light wind from the W around 5 mph9 km/h. NightMostly cloudy, with a low around 63°F17°C. Light wind from the NW around 4 mph6 km/h.
	ThursdaySep 3	69°F20°C	58°F14°C	0 in0.1 mm· 3%	53%	Partly Cloudy	ENE 5 mph8 km/h
DayMostly cloudy and warm, with a high of 69°F20°C and morning low of 58°F14°C. Light wind from the E around 5 mph8 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the NE around 4 mph7 km/h.
	FridaySep 4	67°F19°C	59°F15°C	0.08 in2.1 mm· 35%	55%	Showers	E 8 mph12 km/h
DayMostly cloudy and mild, with a high of 67°F19°C and morning low of 60°F15°C. Breezy from the E at 9 to 10 mph15 to 16 km/h. 35% chance of showers throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the E at 6 to 7 mph9 to 12 km/h. 12% chance of drizzle before dawn.
	SaturdaySep 5	69°F20°C	59°F15°C	0 in0.1 mm· 3%	40%	Clear	E 5 mph9 km/h
DayPartly cloudy and warm, with a high of 69°F20°C and morning low of 59°F15°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. NightPartly cloudy, with a low around 59°F15°C. Light wind from the E around 5 mph8 km/h.
	SundaySep 6	69°F21°C	59°F15°C	0.05 in1.2 mm· 17%	72%	Drizzle	ESE 5 mph8 km/h
DayOvercast and warm, with a high of 69°F21°C and morning low of 59°F15°C. Light wind from the ESE around 5 mph8 km/h. 11% chance of drizzle in the afternoon. NightMostly cloudy, with a low around 59°F15°C. Light wind from the E around 4 mph7 km/h. 17% chance of drizzle in the evening.
	MondaySep 7	65°F18°C	60°F16°C	0.12 in3 mm· 30%	91%	Light Rain	E 9 mph14 km/h
DayOvercast and mild, with a high of 65°F18°C. Breezy from the E at 9 to 10 mph15 to 17 km/h. 25% chance of drizzle throughout the day. NightOvercast, with a low around 61°F16°C. Breezy from the E at 8 to 11 mph13 to 17 km/h. 30% chance of light rain throughout the night.
	TuesdaySep 8	68°F20°C	62°F17°C	0.58 in14.7 mm· 74%	89%	Rain	S 11 mph18 km/h
DayOvercast and warm, with a high of 68°F20°C and morning low of 63°F17°C. Breezy from the S at 12 mph19 km/h. 74% chance of rain throughout the day. NightOvercast, with a low around 62°F17°C. Breezy from the S at 11 to 12 mph17 to 19 km/h. 60% chance of rain throughout the night.
	WednesdaySep 9	71°F22°C	63°F17°C	0.1 in2.6 mm· 28%	57%	Showers	W 11 mph18 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 63°F17°C. Breezy from the W at 12 to 13 mph19 to 21 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 63°F17°C. Breezy from the W at 10 to 11 mph16 to 17 km/h. 28% chance of showers throughout the night.
	ThursdaySep 10	67°F19°C	58°F14°C	0.09 in2.3 mm· 14%	59%	Drizzle	WNW 9 mph15 km/h
DayMostly cloudy and mild, with a high of 67°F19°C and morning low of 58°F14°C. Breezy from the WNW at 9 to 10 mph15 to 15 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the WNW at 9 to 10 mph14 to 15 km/h. 11% chance of drizzle throughout the night.
	FridaySep 11	66°F19°C	56°F13°C	0.17 in4.4 mm· 21%	62%	Showers	SSW 9 mph15 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 56°F13°C. Breezy from the SSW at 10 to 11 mph16 to 17 km/h. 20% chance of drizzle throughout the day. NightMostly cloudy, with a low around 57°F14°C. Breezy from the SW at 9 to 10 mph14 to 16 km/h. 21% chance of showers throughout the night.
	SaturdaySep 12	66°F19°C	58°F14°C	0.18 in4.5 mm· 26%	69%	Showers	SW 10 mph16 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 58°F14°C. Breezy from the SW at 11 mph17 km/h. 24% chance of light rain throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the SW at 10 mph15 km/h. 26% chance of showers throughout the night.
	SundaySep 13	66°F19°C	57°F14°C	0.14 in3.5 mm· 27%	62%	Showers	SW 10 mph16 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 57°F14°C. Breezy from the SW at 10 to 11 mph17 to 18 km/h. 27% chance of showers throughout the day. NightMostly cloudy, with a low around 58°F15°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 22% chance of showers throughout the night.
	MondaySep 14	66°F19°C	56°F13°C	0.16 in4 mm· 23%	58%	Showers	WSW 10 mph16 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 56°F13°C. Breezy from the WSW at 11 mph17 km/h. 19% chance of showers throughout the day. NightMostly cloudy, with a low around 57°F14°C. Breezy from the WSW at 9 to 10 mph15 to 15 km/h. 23% chance of showers throughout the night.
	TuesdaySep 15	65°F18°C	55°F13°C	0.15 in3.7 mm· 21%	56%	Showers	WSW 10 mph16 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 55°F13°C. Breezy from the WSW at 10 to 11 mph17 to 18 km/h. 21% chance of showers throughout the day. NightMostly cloudy, with a low around 56°F13°C. Breezy from the WSW at 10 mph15 km/h. 20% chance of showers throughout the night.
	WednesdaySep 16	64°F18°C	55°F13°C	0.15 in3.8 mm· 22%	56%	Showers	W 11 mph17 km/h
DayMostly cloudy and mild, with a high of 64°F18°C and morning low of 55°F13°C. Breezy from the W at 11 to 12 mph18 to 20 km/h. 22% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 56°F13°C. Breezy from the W at 10 mph16 km/h. 18% chance of showers throughout the night.

Nearby Cities

Kenora256 mi411 km Sault Ste. Marie263 mi424 km Steinbach346 mi557 km Timmins363 mi584 km Fort Garry South371 mi597 km Winnipeg372 mi598 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 48.3820°N, 89.2502°W·Elevation: 188m·Timezone: America/Toronto·Population: 108,843