Thunder Bay, ON - 7 Day Forecast (2024)

Table of Contents
Current ConditionsObserved at: Thunder Bay Airport 2:00 PM EDT Wednesday 12 June 2024 ForecastForecast issued: 11:30 AM EDT Wednesday 12 June 2024 Detailed ForecastForecast issued: 11:30 AM EDT Wednesday 12 June 2024 Detailed ForecastForecast issued: 11:30 AM EDT Wednesday 12 June 2024 Averages and extremes Yesterday's Data Follow: Weather shortcuts Organize Shortcuts Customized Weather shortcuts Features

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SEVERE THUNDERSTORM WATCH

Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain.Hazards:Toonie to golf ball sized hailStrong winds gusting to 90 km/hTiming:This afternoon and early this evening.Discussion:Severe thunderstorms are expected to develop near the Ontario - Minnesota border this afternoon and track eastward. The atmospheric conditions for severe weather are in place over Ontario. However, it is possible that the strongest storms may remain near or just south of the border.Large hail can damage property and cause injury. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Remember, severe thunderstorms can produce tornadoes. Water-related activities may be unsafe due to violent and sudden gusts of wind over bodies of water.Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors!Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, torrential rainfall.Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or tweet reports using #ONStorm.For more information: ontario.ca/page/be-prepared-emergency.

In effect for:

  • City of Thunder Bay

Follow:

  • Regional ATOM

Current ConditionsObserved at: Thunder Bay Airport

  • Past 24 hours
  • Weather Radar
  • Satellite
  • Lightning

Thunder Bay, ON - 7 Day Forecast (2)

21°C

  • °C
  • °F
Observed at:
Thunder Bay Airport
Date:
Condition:
Mostly Cloudy
Pressure:
100.5 kPa
Tendency:
Falling
Temperature:
20.9°C
Dew point:
12.6°C
Humidity:
59%
Wind:
SW 20 km/h
Humidex:
23
Visibility:
32 km

Thunder Bay, ON - 7 Day Forecast (3)

21°C

Condition:
Mostly Cloudy
Pressure:
100.5 kPa
Tendency:
Falling
Temperature:
20.9°C
Dew point:
12.6°C
Humidity:
59%
Wind:
SW 20 km/h
Humidex:
23
Visibility:
32 km

Thunder Bay, ON - 7 Day Forecast (4)

Mostly Cloudy

21°C

  • °C
  • °F
Wind:
SW 20 km/h
More details
Temperature:
20.9°C
Pressure:
100.5 kPa
Dew point:
12.6°C
Visibility:
32 km
Humidity:
59%
Date:
Observed at:
Thunder Bay Airport

Past 24 hour Conditions

Weather Radar

Satellite

Lightning

Alerts

Jet Stream

Hourly Forecast

Air Quality

Historical Weather

ForecastForecast issued:

  • Hourly Forecast
  • Air Quality
  • Alerts
  • Jet Stream

Wed12 Jun

23°C40%Chance of showers or thunderstorms

Tonight

Thunder Bay, ON - 7 Day Forecast (6)

11°C

Showers or thunderstorms

Thu
13 Jun

Thunder Bay, ON - 7 Day Forecast (7)

20°C

Showers

Night

Thunder Bay, ON - 7 Day Forecast (8)

8°C

30%

Chance of showers

Fri
14 Jun

Thunder Bay, ON - 7 Day Forecast (9)

23°C

Sunny

Night

Thunder Bay, ON - 7 Day Forecast (10)

11°C

Clear

Sat
15 Jun

Thunder Bay, ON - 7 Day Forecast (11)

26°C

30%

Chance of showers

Night

Thunder Bay, ON - 7 Day Forecast (12)

15°C

30%

Chance of showers

Sun
16 Jun

Thunder Bay, ON - 7 Day Forecast (13)

25°C

A mix of sun and cloud

Night

Thunder Bay, ON - 7 Day Forecast (14)

16°C

Cloudy periods

Mon
17 Jun

Thunder Bay, ON - 7 Day Forecast (15)

26°C

Cloudy

Night

Thunder Bay, ON - 7 Day Forecast (16)

15°C

Cloudy

Tue
18 Jun

Thunder Bay, ON - 7 Day Forecast (17)

23°C

Cloudy

SEVERE THUNDERSTORM WATCH

Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain.Hazards:Toonie to golf ball sized hailStrong winds gusting to 90 km/hTiming:This afternoon and early this evening.Discussion:Severe thunderstorms are expected to develop near the Ontario - Minnesota border this afternoon and track eastward. The atmospheric conditions for severe weather are in place over Ontario. However, it is possible that the strongest storms may remain near or just south of the border.Large hail can damage property and cause injury. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Remember, severe thunderstorms can produce tornadoes. Water-related activities may be unsafe due to violent and sudden gusts of wind over bodies of water.Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors!Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, torrential rainfall.Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or tweet reports using #ONStorm.For more information: ontario.ca/page/be-prepared-emergency.

In effect for:

  • City of Thunder Bay

Follow:

  • Regional ATOM

Detailed ForecastForecast issued:

SEVERE THUNDERSTORM WATCH

Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain.Hazards:Toonie to golf ball sized hailStrong winds gusting to 90 km/hTiming:This afternoon and early this evening.Discussion:Severe thunderstorms are expected to develop near the Ontario - Minnesota border this afternoon and track eastward. The atmospheric conditions for severe weather are in place over Ontario. However, it is possible that the strongest storms may remain near or just south of the border.Large hail can damage property and cause injury. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Remember, severe thunderstorms can produce tornadoes. Water-related activities may be unsafe due to violent and sudden gusts of wind over bodies of water.Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors!Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, torrential rainfall.Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or tweet reports using #ONStorm.For more information: ontario.ca/page/be-prepared-emergency.

In effect for:

  • City of Thunder Bay

Follow:

  • Regional ATOM
DateDetailed Forecast
TodayA mix of sun and cloud with 40 percent chance of showers early this afternoon. A few showers or thunderstorms beginning this afternoon. Risk of a thunderstorm early this afternoon. Wind becoming south 20 km/h then southwest 40 gusting to 60 late this afternoon. High 23. Humidex 26. UV index 7 or high.
TonightA few showers or thunderstorms ending after midnight then cloudy with 40 percent chance of showers. Risk of a thunderstorm overnight. Local amount 20 to 30 mm. Wind southwest 30 km/h gusting to 50 becoming east 40 gusting to 60 then light late this evening. Low 11.
Thu, 13 JunMainly cloudy with 40 percent chance of showers in the morning. Showers beginning in the morning. Risk of a thunderstorm in the morning and afternoon. Local amount 10 to 20 mm. Wind becoming west 20 km/h late in the morning. High 20.
NightCloudy periods with 30 percent chance of showers. Low 8.
Fri, 14 JunSunny. High 23.
NightClear. Low 11.
Sat, 15 JunA mix of sun and cloud with 30 percent chance of showers. High 26.
NightCloudy periods with 30 percent chance of showers. Low 15.
Sun, 16 JunA mix of sun and cloud. High 25.
NightCloudy periods. Low 16.
Mon, 17 JunCloudy. High 26.
NightCloudy. Low 15.
Tue, 18 JunCloudy. High 23.
NormalsMax21°C.Min8°C.Sunrise5:55 EDTSunset21:59 EDT

Detailed ForecastForecast issued:

Today23°C

A mix of sun and cloud with 40 percent chance of showers early this afternoon. A few showers or thunderstorms beginning this afternoon. Risk of a thunderstorm early this afternoon. Wind becoming south 20 km/h then southwest 40 gusting to 60 late this afternoon. High 23. Humidex 26. UV index 7 or high.

Thunder Bay, ON - 7 Day Forecast (21)

Tonight
11°C

A few showers or thunderstorms ending after midnight then cloudy with 40 percent chance of showers. Risk of a thunderstorm overnight. Local amount 20 to 30 mm. Wind southwest 30 km/h gusting to 50 becoming east 40 gusting to 60 then light late this evening. Low 11.

Thunder Bay, ON - 7 Day Forecast (22)

Thu, 13 Jun
20°C

Mainly cloudy with 40 percent chance of showers in the morning. Showers beginning in the morning. Risk of a thunderstorm in the morning and afternoon. Local amount 10 to 20 mm. Wind becoming west 20 km/h late in the morning. High 20.
Night:Cloudy periods with 30 percent chance of showers. Low 8.

Thunder Bay, ON - 7 Day Forecast (23)

Fri, 14 Jun
23°C

Sunny. High 23.
Night:Clear. Low 11.

Thunder Bay, ON - 7 Day Forecast (24)

Sat, 15 Jun
26°C

A mix of sun and cloud with 30 percent chance of showers. High 26.
Night:Cloudy periods with 30 percent chance of showers. Low 15.

Thunder Bay, ON - 7 Day Forecast (25)

Sun, 16 Jun
25°C

A mix of sun and cloud. High 25.
Night:Cloudy periods. Low 16.

Thunder Bay, ON - 7 Day Forecast (26)

Mon, 17 Jun
26°C

Cloudy. High 26.
Night:Cloudy. Low 15.

Thunder Bay, ON - 7 Day Forecast (27)

Tue, 18 Jun
23°C

Cloudy. High 23.

Normals:
Max21°C.Min8°C.
Sunrise:
5:55 EDT
Sunset:
21:59 EDT

Averages and extremes

12 Jun
Average high
  • 20.1°C
Average low
  • 6.8°C
Highest temperature (1942-2004)
  • 35.6°C
  • 1956
Lowest temperature (1942-2004)
  • 0.0°C
  • 1947
Greatest precipitation (1942-2004)
  • 33.4 mm
  • 1989
Greatest rainfall (1942-2003)
  • 33.4 mm
  • 1989
Greatest snowfall (1942-2003)
  • 0.0 cm
Most snow on the ground (1955-2004)
  • 0.0 cm
Monthly frequency of precipitation
  • n/a

Note that more recent Averages and Extremes information for this location may be available. Please visit the Historical Climate Data's Almanac Averages and Extremes page.

Yesterday's Data

  • Historical Weather

Max:
15.9°C

Min:
1.3°C

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Thunder Bay, ON - 7 Day Forecast (2024)
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