Thunder Bay Intl
Weather station · 48.4°N 89.3°W · 197 m above sea level
ICAO CZTBWMO 71667Station data since 2003
Record high
28.0°C
in 2017
Record low
−2.0°C
in 2005
Average high
18.2°C
all years on record
16.6°C short of the record for 23 September
Today’s high 11.4°C against 28.0°C in 2017. A reading that beats it is flagged here automatically, once a second cycle confirms it.
All-time record high
39.0°C
- Date
- Monday, 13 July 2026
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Thunder Bay Intl, Canada
- Position
- 48.37°N 89.33°W · 197 m
Highest highest in available records since 2003. Source: NOAA GHCN-Daily.
All-time record low
−39.6°C
- Date
- Tuesday, 31 December 2013
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Thunder Bay Intl, Canada
- Position
- 48.37°N 89.33°W · 197 m
Highest and lowest lowest in available records since 2003. Source: NOAA GHCN-Daily.
Where Thunder Bay Intl is
48.37°N 89.33°W
Records by month
Jan
9.4°
−39.5°
Feb
11.3°
−37.4°
Mar
23.8°
−33.7°
Apr
24.4°
−19.3°
May
30.9°
−8.4°
Jun
33.9°
−2.4°
Jul
39.0°
1.6°
Aug
32.8°
0.4°
Sep
34.1°
Recent days
| Day | High | At | Low | At |
|---|---|---|---|---|
| 2026-09-23 | 11.4°C | 00:00 UTC | 1.1°C | 08:00 UTC |
| 2026-09-22 | 16.2°C | 19:00 UTC | 9.4°C | 15:00 UTC |
Nearby stations
- THUNDER BAY CS, ONTCanada0 km
- Thunder Bay IntlCanada0.6 km
- Welcome IslandCanada15.6 km
- Grand Marais MuniUnited States98.6 km
- Grand Marais BayUnited States102.9 km
- Upsala Canada111.8 km
Data sources for this page
| Figure | Source | Type |
|---|---|---|
| Right now, today so far | NOAA Aviation Weather Center (METAR) and NOAA NWS WMO bulletins (SYNOP) | Measured, station |
| All-time, monthly and on-this-day records | NOAA NCEI Global Historical Climatology Network daily (GHCN-Daily), 2003 to 2026 | Measured, station |
| Nearby stations and distances | Computed from station positions in our own database | Calculated |
