Frost risk
SatOvernight low near 0°C. Cover tender plants.
Thunder Bay Weather
0°
Partly cloudy
Feels like -2°
12°
0°
today's high / low
45
Tolerable
Outdoor comfort right now
It is 0°C and partly cloudy in Thunder Bay, feeling more like -2°C. Steady rain moves in around 12pm, clearing by 2am. Temperatures climb about 9°C over the next six hours. Tomorrow: rain showers, high 13°C.
- Pressure steady slowly 1026 hPa
- 48h+ since rain
- Wind 8 km/h W
- Humidity 97%
- Cloud 25%
- UV peak 2
- Rain chance 73%
Next 48 hours
Scroll sideways — or pick a day below.
Now
8
6am
5
7am
4
8am
4
9am
1%
4
10am
5%
5
11am
10%
6
12pm
20%
8
1pm
59%
11
2pm
41%
14
3pm
55%
17
4pm
67%
19
5pm
51%
21
6pm
60%
22
7pm
73%
20
8pm
65%
19
9pm
61%
17
10pm
69%
14
11pm
52%
12
12am
Sun
41%
11
1am
87%
13
2am
25%
15
3am
8%
18
4am
2%
20
5am
21
6am
23
7am
8%
24
8am
1%
24
9am
25
10am
26
11am
28
12pm
30
1pm
2%
30
2pm
30
3pm
30
4pm
29
5pm
28
6pm
1%
26
7pm
1%
23
8pm
21
9pm
4%
20
10pm
4%
19
11pm
4%
19
12am
Mon
18
1am
17
2am
16
3am
15
4am
14
Conditions in detail
-
Feels like
-2°
Colder than the thermometer says
-
Dew point
0°
Very dry air
-
Wind
8 km/h
Gusting -- from W
-
Pressure
1026 hPa
Steady slowly
-
Visibility
24 km
Crystal clear
-
UV index
0
Peaks at 2 today
-
Cloud cover
25%
—
-
Precipitation today
10 mm
Over about 12h
Air quality
US AQI
21
Good
- PM2.5 3 µg/m³
- PM10 3 µg/m³
- Ozone 48 µg/m³
- NO₂ 3 µg/m³
Next 14 days
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Live radar
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Best time to…
Scored hour by hour across the next two days.
-
Line-dry laundry
100Sun 9am–7pm
Dry air plus a working breeze
-
Go for a run
95Sun 2am–4am
Cool, calm and dry
-
Walk the dog
91Sun 2am–4am
Mild, no downpours, no ice
-
Stargazing
90Sun 8pm–4am
Clear, dark and calm
-
Garden work
83Sun 9am–7pm
Mild and dry, sun optional
-
Golden-hour photos
82Sat 8am–8am
Scattered cloud catches the light
-
Ride a bike
70Sat 6am–12pm
Wind matters more than temperature
-
Patio or BBQ
43No good window in the next 48h
Warm, dry, and not too breezy
Sun & moon
Sunrise
7:59 am
Sunset
7:31 pm
- Day length11h 32m
- Golden hour6:36 pm–7:31 pm
Last quarter
54% illuminated
Full moon in 23 days
Stargazing tonight
Poor · 30/100
Clearest around 5am at 25% cloud.
Almanac
Historical records for this location are still loading, or unavailable.
Thunder Bay weather questions, answered
- Will it rain in Thunder Bay today?
- It is dry now. Rain is most likely around 12pm, easing by 2am. The day peaks at a 73% chance.
- How warm does it get in Thunder Bay today?
- Thunder Bay reaches a high of 12°C and drops to 0°C overnight. Right now it is 0°C and feels like -2°C.
- What is the best time to be outside in Thunder Bay today?
- 12pm looks like the pick — 10°C, light rain, wind 8 km/h. Outdoor comfort scores 77 out of 100 (great).
- What is the weather in Thunder Bay tomorrow?
- Rain showers, with a high of 13°C and a low of 7°C — +1.9° warmer than today. Chance of precipitation peaks at 87%.
- What time is sunrise and sunset in Thunder Bay?
- The sun rises at 7:59 am and sets at 7:31 pm, giving 11h 32m of daylight.
About this Thunder Bay forecast
Updated 2026-10-03 10:14 UTC, and refreshed automatically every few minutes. Forecast data is provided by Visual Crossing; radar frames from RainViewer; the 20-year normals and records from the ERA5 reanalysis archive. No national weather service publishes point alerts here, so only computed watches are shown.
Watches labelled computed are worked out on this site from forecast thresholds and are not official warnings — always defer to your national weather service. Need help reading a number? See the sourced weather guide.
Weather near Thunder Bay
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