Hourly Forecast - Perth (Lanark)
WEATHER ADVISORY
Winter weather travel advisory in effect for today and tonight. Hazards: Snow with accumulations near 10 cm. Reduced visibility at times in heavy snow. Timing: This morning through Thursday morning. Discussion: A low pressure system will bring heavy snow at times to the area beginning this morning. The snow is expected to taper off Thursday morning. Motorists should expect hazardous winter driving conditions and adjust travel plans accordingly. Surfaces such as highways, roads, walkways and parking lots may become difficult to navigate due to accumulating snow. Slow down driving in slippery conditions. Watch for taillights ahead and maintain a safe following distance. For road conditions and other traveller information from the Ministry of Transportation, visit ontario.ca/511, twitter.com/511Ontario, or call 5-1-1. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or tweet reports using #ONStorm.
- Smiths Falls - Perth - Eastern Lanark County
Regional ATOM| Date/Time (EST) | Temp. (°C) | Weather Conditions | Likelihood of precip (%) | Wind (km/h) | Wind Chill |
|---|---|---|---|---|---|
| 4 December 2024 | |||||
| 07:00 | -4 |  Cloudy | 20 | S 15 | -9 |
| 08:00 | -4 | Cloudy | 20 | S 15 | -9 |
| 09:00 | -3 |  Periods of snow | 80 | S 15 | -9 |
| 10:00 | -3 | Periods of snow | 80 | S 15 | -8 |
| 11:00 | -3 | Periods of snow | 80 | S 20 gusts 40 | -9 |
| 12:00 | -2 |  Snow | 100 | S 20 gusts 40 | -8 |
| 13:00 | -2 | Snow | 100 | S 20 gusts 40 | -8 |
| 14:00 | -2 | Snow | 100 | S 20 gusts 40 | -7 |
| 15:00 | -1 | Snow | 100 | S 20 gusts 40 | -7 |
| 16:00 | -1 | Snow | 100 | S 20 gusts 40 | -7 |
| 17:00 | -1 | Snow | 100 | S 20 gusts 40 | -7 |
| 18:00 | -2 | Snow | 100 | S 20 gusts 40 | -7 |
| 19:00 | -2 | Snow | 100 | S 20 gusts 40 | -8 |
| 20:00 | -2 | Snow | 100 | S 20 gusts 40 | -8 |
| 21:00 | -2 | Snow | 100 | S 20 gusts 40 | -8 |
| 22:00 | -2 | Snow | 100 | S 20 gusts 40 | -8 |
| 23:00 | -2 | Snow | 100 | S 20 gusts 40 | -8 |
| 5 December 2024 | |||||
| 00:00 | -2 | Periods of light snow | 60 | SE 15 | -7 |
| 01:00 | -2 | Periods of light snow | 60 | SE 15 | -7 |
| 02:00 | -2 | Periods of light snow | 60 | SE 15 | -7 |
| 03:00 | -2 | Periods of light snow | 60 | SE 15 | -7 |
| 04:00 | -2 | Periods of light snow | 60 | SE 15 | -7 |
| 05:00 | -2 | Periods of light snow | 60 | SE 15 | -7 |
| 06:00 | -2 | Flurries at times heavy | 100 | SW 15 | -7 |
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