Weather Thunder Bay long-term weather forecast

Long-term weather forecast for Thunder Bay for ten days.

Wednesday, Sep 10

18 / 8°C

0.2 mm

12 km/h

10 °C	10 °C	2 am
12 °C	11 °C	8 am
17 °C	16 °C	2 pm
14 °C	15 °C	8 pm

sunrise 7:27 am
sunset 8:19 pm

HOURLY

During the day morning cloudy, later morning overcast, in the afternoon cloudy, in the evening clear. The highest temperature 18 °C. Total rainfall 0.2 mm. At night overcast. The lowest temperature 8 °C.

Interactive map weather Ontario

GPS: 48.3820; -89.2502

altitude: 199 m
local time:

PLACES IN THE AREA

Weather forecast Thunder Bay, Ontario extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Wednesday 09/10/2025
2 AM 11 AM	cloudy	10 °C 9 °C	0.0 mm	2.6 m/s 9 km/h north-northeast	1018 hPa	96 %	9 °C	69 %	0%	69%	0%	0%
8 AM 5 PM	overcast	12 °C 12 °C	0.2 mm	3.4 m/s 12 km/h north-northeast	1021 hPa	94 %	11 °C	100 %	0%	100%	0%	0%
2 PM 11 PM	cloudy	17 °C 17 °C	0.0 mm	3.4 m/s 12 km/h east	1023 hPa	71 %	11 °C	39 %	0%	39%	0%	0%
8 PM 5 AM	clear	14 °C 14 °C	0.0 mm	0.7 m/s 3 km/h southwest	1023 hPa	83 %	11 °C	0 %	0%	0%	0%	0%
Thursday 09/11/2025
2 AM 11 AM	overcast	8 °C 7 °C	0.0 mm	1.1 m/s 4 km/h northwest	1024 hPa	99 %	8 °C	95 %	0%	95%	0%	0%
8 AM 5 PM	cloudy	9 °C 9 °C	0.0 mm	0.7 m/s 3 km/h north	1026 hPa	98 %	8 °C	49 %	0%	49%	0%	0%
2 PM 11 PM	clear	17 °C 17 °C	0.0 mm	2.8 m/s 10 km/h southeast	1025 hPa	74 %	12 °C	6 %	0%	6%	0%	0%
8 PM 5 AM	clear	15 °C 16 °C	0.0 mm	1.7 m/s 6 km/h southeast	1022 hPa	88 %	13 °C	2 %	0%	2%	0%	0%

Thunder Bay, Ontario - information

State: Ontario

GPS coordinates: 48.3820; -89.2502

Time zone: America / Toronto time difference in hours with time in US is -6 hours

Population: 107 909
Altitude: 199 m
The administrative part:

Ontario, Toronto
, Thunder Bay

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Data source

Weather forecast for Thunder Bay is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Thunder Bay

data are always in the local time

Sun and light

Sept. 10, 2025

Sunrise:	Sunset:
7:27 am	8:19 pm
Noon:	Length of day:
1:53 pm	12:52
Start of civil twilight*:	End of civil twilight*:
6:54 am	8:51 pm
Start of nautical twilight*:	End of nautical twilight*:
6:17 am	9:28 pm
Start of astronomical twilight*:	End of astronomical twilight*:
5:37 am	10:08 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
09/09/2025 8:59 pm	09/10/2025 11:15 am
Next new moon:	Next full moon:
09/22/2025	10/07/2025