Current Conditions

Thunder Bay, Ontario

63°F17°C
Partly Cloudy

Wind

N 4 mph6 km/h

Humidity

83%

Cloud Cover

27%

As of Wednesday, September 2, 2026 at 10:34 PM EDT

Today's Outlook

Night

Partly cloudy, with a low around 58°F14°C. Light wind from the NE around 4 mph7 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 68°F20°CLow 57°F14°CPrecip 0 in0.1 mm2%Cloud 45%Wind ENE 5 mph8 km/hThursday: Mostly cloudy and warm, with a high of 68°F20°C and morning low of 57°F14°C. Light wind from the E around 6 mph9 km/h. Thursday Night: Partly cloudy, with a low around 58°F14°C. Light wind from the NE around 4 mph7 km/h.
ShowersHigh 67°F19°CLow 59°F15°CPrecip 0.06 in1.4 mm28%Cloud 54%Wind E 7 mph12 km/hFriday: 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. 28% chance of showers throughout the day. Friday Night: Mostly cloudy, with a low around 59°F15°C. Breezy from the E at 6 to 8 mph9 to 12 km/h. 10% chance of drizzle before dawn.
Partly CloudyHigh 69°F20°CLow 59°F15°CPrecip 0.01 in0.2 mm3%Cloud 42%Wind E 5 mph8 km/hSaturday: Partly cloudy and warm, with a high of 69°F20°C and morning low of 59°F15°C. Light wind from the E around 6 mph9 km/h. Saturday Night: Partly cloudy, with a low around 59°F15°C. Light wind from the E around 4 mph7 km/h.
DrizzleHigh 69°F21°CLow 59°F15°CPrecip 0.04 in1 mm12%Cloud 72%Wind ESE 5 mph7 km/hSunday: Overcast and warm, with a high of 69°F21°C and morning low of 59°F15°C. Light wind from the SE 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. 12% chance of drizzle in the evening.
Light RainHigh 63°F17°CLow 60°F15°CPrecip 0.13 in3.4 mm31%Cloud 92%Wind ENE 9 mph15 km/hMonday: Overcast and mild, with a high of 63°F17°C. Breezy from the ENE at 10 to 12 mph16 to 19 km/h. 26% chance of drizzle throughout the day. Monday Night: Overcast, with a low around 60°F15°C. Breezy from the ENE at 9 to 12 mph14 to 20 km/h. 31% chance of light rain throughout the night.
RainHigh 66°F19°CLow 60°F15°CPrecip 0.56 in14.3 mm69%Cloud 90%Wind SSE 12 mph19 km/hTuesday: Overcast and mild, with a high of 66°F19°C and morning low of 61°F16°C. Breezy from the SSE at 12 to 13 mph20 to 21 km/h. 69% chance of rain throughout the day. Tuesday Night: Overcast, with a low around 60°F15°C. Breezy from the SSE at 11 to 13 mph18 to 21 km/h. 61% chance of rain throughout the night.
ShowersHigh 72°F22°CLow 63°F17°CPrecip 0.11 in2.7 mm27%Cloud 57%Wind WSW 10 mph16 km/hWednesday: Mostly cloudy and warm, with a high of 72°F22°C and morning low of 63°F17°C. Breezy from the WSW at 11 to 12 mph17 to 20 km/h. 16% chance of drizzle throughout the day. Wednesday Night: Mostly cloudy, with a low around 63°F17°C. Breezy from the WSW at 9 to 10 mph15 to 17 km/h. 27% chance of showers throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdaySep 368°F20°C57°F14°C0 in0.1 mm· 2%45%Partly CloudyENE 5 mph8 km/h
FridaySep 467°F19°C59°F15°C0.06 in1.4 mm· 28%54%ShowersE 7 mph12 km/h
SaturdaySep 569°F20°C59°F15°C0.01 in0.2 mm· 3%42%Partly CloudyE 5 mph8 km/h
SundaySep 669°F21°C59°F15°C0.04 in1 mm· 12%72%DrizzleESE 5 mph7 km/h
MondaySep 763°F17°C60°F15°C0.13 in3.4 mm· 31%92%Light RainENE 9 mph15 km/h
TuesdaySep 866°F19°C60°F15°C0.56 in14.3 mm· 69%90%RainSSE 12 mph19 km/h
WednesdaySep 972°F22°C63°F17°C0.11 in2.7 mm· 27%57%ShowersWSW 10 mph16 km/h
ThursdaySep 1067°F20°C60°F15°C0.13 in3.2 mm· 19%60%ShowersWNW 9 mph15 km/h
FridaySep 1166°F19°C57°F14°C0.14 in3.5 mm· 22%61%ShowersWSW 9 mph15 km/h
SaturdaySep 1265°F18°C57°F14°C0.18 in4.6 mm· 24%70%ShowersWSW 10 mph16 km/h
SundaySep 1365°F18°C56°F13°C0.15 in3.7 mm· 22%64%ShowersWSW 10 mph16 km/h
MondaySep 1464°F18°C55°F13°C0.13 in3.2 mm· 19%56%ShowersW 10 mph16 km/h
TuesdaySep 1565°F18°C54°F12°C0.07 in1.9 mm· 13%49%DrizzleWSW 9 mph15 km/h
WednesdaySep 1664°F18°C54°F12°C0.11 in2.8 mm· 21%55%DrizzleWSW 10 mph16 km/h
ThursdaySep 1764°F18°C54°F12°C0.11 in2.9 mm· 19%58%ShowersW 10 mph16 km/h

Nearby Cities

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