Frost risk
SatOvernight low near 0°C. Cover tender plants.
Thunder Bay Hourly Weather
1°
Partly cloudy
Feels like 1°
12°
0°
today's high / low
55
Pleasant
Outdoor comfort right now
It is 1°C and partly cloudy in Thunder Bay. Steady rain moves in around 12pm, clearing by 2am. Temperatures climb about 10°C over the next six hours. Tomorrow: rain showers, high 13°C.
- Pressure steady slowly 1026 hPa
- 48h+ since rain
- Wind 5 km/h W
- Humidity 97%
- Cloud 25%
- UV peak 2
- Rain chance 73%
Next 48 hours
Scroll sideways — or pick a day below.
Now
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%
31
2pm
31
3pm
30
4pm
28
5pm
26
6pm
1%
24
7pm
1%
21
8pm
19
9pm
4%
19
10pm
4%
18
11pm
4%
17
12am
Mon
16
1am
16
2am
15
3am
14
4am
13
5am
13
Conditions in detail
-
Feels like
1°
About what it looks like
-
Dew point
1°
Dry and pleasant
-
Wind
5 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
Pick a day to load its hour-by-hour detail.
Live radar
Drag to pan, scroll to zoom, or scrub through recent frames.
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
97Sun 2am–5am
Cool, calm and dry
-
Stargazing
97Sun 9pm–5am
Clear, dark and calm
-
Walk the dog
92Sun 2am–5am
Mild, no downpours, no ice
-
Garden work
84Sun 9am–7pm
Mild and dry, sun optional
-
Golden-hour photos
83Sat 8am–8am
Scattered cloud catches the light
-
Ride a bike
70Sat 6am–12pm
Wind matters more than temperature
-
Patio or BBQ
45No 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 · 31/100
Clearest around 6am at 25% cloud.
Almanac
Historical records for this location are still loading, or unavailable.
Hour-by-hour forecast for Thunder Bay
Every hour for the next 48 hours, local time.
| Time | Conditions | Temp | Feels | Chance | Amount | Wind | Humidity |
|---|---|---|---|---|---|---|---|
| Saturday Oct 3 | |||||||
| 6am | Partly cloudy | 1° | 1° | 0% | — | 5 km/h | 97% |
| 7am | Partly cloudy | 4° | 4° | 0% | — | 4 km/h | 86% |
| 8am | Partly cloudy | 4° | 4° | 0% | — | 4 km/h | 86% |
| 9am | Partly cloudy | 6° | 6° | 1% | — | 4 km/h | 84% |
| 10am | Overcast | 8° | 7° | 5% | — | 5 km/h | 82% |
| 11am | Overcast | 9° | 9° | 10% | — | 6 km/h (gusts 17 km/h) | 79% |
| 12pm | Light rain | 10° | 10° | 20% | 0.3 mm | 8 km/h (gusts 19 km/h) | 77% |
| 1pm | Light rain | 11° | 11° | 59% | 0.3 mm | 11 km/h (gusts 23 km/h) | 75% |
| 2pm | Rain | 12° | 12° | 41% | 1.1 mm | 14 km/h (gusts 27 km/h) | 73% |
| 3pm | Light rain | 11° | 11° | 55% | 0.8 mm | 17 km/h (gusts 30 km/h) | 73% |
| 4pm | Rain | 11° | 11° | 67% | 1.0 mm | 19 km/h (gusts 33 km/h) | 77% |
| 5pm | Light rain | 10° | 10° | 51% | 0.8 mm | 21 km/h (gusts 38 km/h) | 81% |
| 6pm | Light rain | 10° | 10° | 60% | 0.8 mm | 22 km/h (gusts 41 km/h) | 84% |
| 7pm | Light rain | 10° | 10° | 73% | 0.8 mm | 20 km/h (gusts 41 km/h) | 86% |
| 8pm | Light rain | 10° | 10° | 65% | 0.8 mm | 19 km/h (gusts 41 km/h) | 88% |
| 9pm | Rain | 10° | 10° | 61% | 1.0 mm | 17 km/h (gusts 40 km/h) | 90% |
| 10pm | Rain | 10° | 10° | 69% | 1.5 mm | 14 km/h (gusts 36 km/h) | 92% |
| 11pm | Rain | 10° | 10° | 52% | 1.0 mm | 12 km/h (gusts 31 km/h) | 93% |
| Sunday Oct 4 | |||||||
| 12am | Light rain | 10° | 10° | 41% | 0.5 mm | 11 km/h (gusts 26 km/h) | 94% |
| 1am | Light rain showers | 10° | 10° | 87% | 0.5 mm | 13 km/h (gusts 28 km/h) | 94% |
| 2am | Light rain | 10° | 8° | 25% | — | 15 km/h (gusts 35 km/h) | 94% |
| 3am | Light rain | 9° | 7° | 8% | 0.3 mm | 18 km/h (gusts 42 km/h) | 93% |
| 4am | Partly cloudy | 9° | 7° | 2% | — | 20 km/h (gusts 46 km/h) | 92% |
| 5am | Partly cloudy | 9° | 6° | 0% | — | 21 km/h (gusts 48 km/h) | 90% |
| 6am | Partly cloudy | 8° | 5° | 0% | — | 23 km/h (gusts 50 km/h) | 88% |
| 7am | Partly cloudy | 8° | 5° | 8% | — | 24 km/h (gusts 53 km/h) | 86% |
| 8am | Partly cloudy | 7° | 4° | 1% | — | 24 km/h (gusts 54 km/h) | 84% |
| 9am | Partly cloudy | 8° | 4° | 0% | — | 25 km/h (gusts 55 km/h) | 82% |
| 10am | Partly cloudy | 9° | 5° | 0% | — | 26 km/h (gusts 56 km/h) | 77% |
| 11am | Partly cloudy | 10° | 10° | 0% | — | 28 km/h (gusts 55 km/h) | 70% |
| 12pm | Partly cloudy | 12° | 12° | 0% | — | 30 km/h (gusts 53 km/h) | 63% |
| 1pm | Partly cloudy | 12° | 12° | 2% | — | 31 km/h (gusts 52 km/h) | 56% |
| 2pm | Partly cloudy | 13° | 13° | 0% | — | 31 km/h (gusts 51 km/h) | 52% |
| 3pm | Partly cloudy | 13° | 13° | 0% | — | 30 km/h (gusts 49 km/h) | 49% |
| 4pm | Partly cloudy | 13° | 13° | 0% | — | 28 km/h (gusts 48 km/h) | 46% |
| 5pm | Partly cloudy | 13° | 13° | 0% | — | 26 km/h (gusts 47 km/h) | 46% |
| 6pm | Partly cloudy | 13° | 13° | 1% | — | 24 km/h (gusts 47 km/h) | 48% |
| 7pm | Partly cloudy | 11° | 11° | 1% | — | 21 km/h (gusts 45 km/h) | 52% |
| 8pm | Partly cloudy | 10° | 7° | 0% | — | 19 km/h (gusts 46 km/h) | 57% |
| 9pm | Partly cloudy | 9° | 6° | 4% | — | 19 km/h (gusts 48 km/h) | 64% |
| 10pm | Partly cloudy | 8° | 5° | 4% | — | 18 km/h (gusts 48 km/h) | 70% |
| 11pm | Clear sky | 7° | 4° | 4% | — | 17 km/h (gusts 48 km/h) | 74% |
| Monday Oct 5 | |||||||
| 12am | Clear sky | 7° | 4° | 0% | — | 16 km/h (gusts 48 km/h) | 76% |
| 1am | Clear sky | 7° | 4° | 0% | — | 16 km/h (gusts 45 km/h) | 77% |
| 2am | Clear sky | 6° | 3° | 0% | — | 15 km/h (gusts 40 km/h) | 80% |
| 3am | Clear sky | 5° | 3° | 0% | — | 14 km/h (gusts 36 km/h) | 82% |
| 4am | Clear sky | 5° | 2° | 0% | — | 13 km/h (gusts 34 km/h) | 85% |
| 5am | Clear sky | 4° | 1° | 0% | — | 13 km/h (gusts 35 km/h) | 87% |
About this Thunder Bay forecast
Updated 2026-10-03 10:56 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
Forecasts for the closest places we publish.
- Sault Ste. Marie 424 km
- Minneapolis 487 km
- Fargo 589 km
- Winnipeg 598 km
- Milwaukee 603 km
- Sudbury 655 km
- Chicago 734 km
- Sioux Falls 789 km