Next 7 departures
- TueOct 13
CautionHeavy rain near Barrie around 8 AM EDT. Also at 1 other checkpoint.
Along the way
Checkpoint · arrival Weather · temperature Toronto7 AM EDT Rain18°C Hwy 400 near King City7:30 AM EDT Rain16°C Barrie8 AM EDT Heavy rain16°C Parry Sound9:30 AM EDT Rain12°C French River10:30 AM EDT Heavy rain10°C Sudbury11:30 AM EDT Rain8°C - WedOct 14
ClearNo significant weather expected. Temperatures 10–16°C along the way.
Along the way
Checkpoint · arrival Weather · temperature Toronto7 AM EDT Cloudy16°C Hwy 400 near King City7:30 AM EDT Cloudy13°C Barrie8 AM EDT Light rain13°C Parry Sound9:30 AM EDT Cloudy11°C French River10:30 AM EDT Cloudy12°C Sudbury11:30 AM EDT Cloudy10°C - ThuOct 15
ClearNo significant weather expected. Temperatures 6–8°C along the way.
Along the way
Checkpoint · arrival Weather · temperature Toronto7 AM EDT Mostly sunny8°C Hwy 400 near King City7:30 AM EDT Mostly sunny6°C Barrie8 AM EDT Partly sunny6°C Parry Sound9:30 AM EDT Sunny8°C French River10:30 AM EDT Sunny7°C Sudbury11:30 AM EDT Partly sunny7°C - FriOct 16
CautionHeavy rain near Parry Sound around 9:30 AM EDT.
Along the way
Checkpoint · arrival Weather · temperature Toronto7 AM EDT Heavy rain10°C Hwy 400 near King City7:30 AM EDT Heavy rain9°C Barrie8 AM EDT Rain8°C Parry Sound9:30 AM EDT Heavy rain10°C French River10:30 AM EDT Rain9°C Sudbury11:30 AM EDT Rain8°C - SatOct 17
ClearNo significant weather expected. Temperatures 4–5°C along the way.
Along the way
Checkpoint · arrival Weather · temperature Toronto7 AM EDT Mostly sunny5°C Hwy 400 near King City7:30 AM EDT Partly sunny4°C Barrie8 AM EDT Cloudy4°C Parry Sound9:30 AM EDT Sunny5°C French River10:30 AM EDT Sunny5°C Sudbury11:30 AM EDT Partly sunny5°C - SunOct 18
ClearNo significant weather expected. Temperatures 5–7°C along the way.
Along the way
Checkpoint · arrival Weather · temperature Toronto7 AM EDT Mostly sunny7°C Hwy 400 near King City7:30 AM EDT Sunny5°C Barrie8 AM EDT Mostly sunny5°C Parry Sound9:30 AM EDT Partly sunny7°C French River10:30 AM EDT Partly sunny7°C Sudbury11:30 AM EDT Cloudy5°C - MonOct 19
ClearNo significant weather expected. Temperatures 9–13°C along the way.
Along the way
Checkpoint · arrival Weather · temperature Toronto7 AM EDT Cloudy12°C Hwy 400 near King City7:30 AM EDT Cloudy9°C Barrie8 AM EDT Partly sunny10°C Parry Sound9:30 AM EDT Cloudy13°C French River10:30 AM EDT Partly sunny12°C Sudbury11:30 AM EDT Sunny12°C
The worst conditions expected at any checkpoint, timed to when you would reach it driving without stops. Levels use Road Travel’s driving-risk scale.
The route, stop by stop
Checkpoints in order, with driving time from Toronto (no stops) and elevation. The forecast above is timed to these.
- Toronto, ONStart 91 melevation
- Hwy 400 near King City, ONKm 45 · 34 min 355 melevation
- Barrie, ONKm 95 · 1 h 2 min 227 melevation
- Parry Sound, ONKm 238 · 2 h 34 min 202 melevation
- French River, ONKm 322 · 3 h 30 min 210 melevation
- Sudbury, ONKm 398 · 4 h 26 min 260 melevation
Typical weather by month
Average daily highs and lows, and days with 2.5 cm (an inch) or more of snow, at Toronto, Hwy 400 near King City and Sudbury.
| Month | Toronto 112 m | Hwy 400 near King City King City station · 352 m | Sudbury Coniston station · 268 m | ||
|---|---|---|---|---|---|
| High / low °C | Snow days | High / low °C | Snow days | High / low °C | |
| Jan | -1° / -7° | 3.9 | -3° / -11° | 3.5 | -7° / -20° |
| Feb | 1° / -6° | 3.2 | -2° / -10° | 2.2 | -4° / -18° |
| Mar | 5° / -2° | 2.3 | 3° / -6° | 3.0 | 2° / -11° |
| Apr | 11° / 4° | 0.7 | 11° / 1° | 0.8 | 10° / -2° |
| May | 18° / 10° | 0 | 18° / 7° | 0 | 18° / 5° |
| Jun | 24° / 15° | 0 | 23° / 13° | 0 | 24° / 11° |
| Jul | 27° / 18° | 0 | 25° / 15° | 0 | 25° / 13° |
| Aug | 26° / 18° | 0 | 25° / 15° | 0 | 25° / 12° |
| Sep | 21° / 14° | 0 | 20° / 11° | 0 | 19° / 7° |
| Oct | 14° / 8° | 0 | 13° / 5° | 0.3 | 12° / 2° |
| Nov | 8° / 2° | 0.8 | 6° / -1° | 1.8 | 4° / -5° |
| Dec | 3° / -3° | 2.7 | 0° / -6° | 3.3 | -2° / -13° |
1991–2020 averages computed from NOAA NCEI daily station records (GHCN-Daily): TORONTO (CAN06158350, 112 m); KING SMOKE TREE, ON CA (CAN06154142, 352 m); CONISTON STP, ON CA (CAN06061850, 268 m). Snow days are days with at least 2.5 cm (1 inch) of new snow. “—” means the station does not publish that normal.
Road conditions
Closures and chain rules change by the hour, so we link to the official reports for Ontario rather than repeat them.
- Ontario · Ontario 511Ontario 511 road conditions
Check the official forecast from Environment Canada and each road report before you leave.
Get alerts timed to where you’ll be when you get there
Road Travel plans the drive from Toronto to Sudbury with the forecast at every stretch for the hour you’ll reach it, then warns you about weather ahead while you drive.
Questions about this drive
How long is the drive from Toronto to Sudbury?
398 km (247 miles), about 4½ hours of driving without stops, by way of Hwy 400 and Hwy 69. Fuel, food and rest stops add to that.
What is the highest point on the drive?
Hwy 400 near King City, at 355 m (1,165 ft). It comes at km 45, about 34 min of driving after you leave Toronto.
Does it snow at Hwy 400 near King City in November?
The nearest long-term NOAA station, King City (352 m), averages 14 cm of snow in November, with about 2 days of 2.5 cm or more (1991–2020 averages).
How cold is Sudbury in January?
The nearest long-term NOAA station, Coniston (268 m), averages a high of -7°C and a low of -20°C in January (1991–2020 averages).