Whitby residents will feel a noticeable chill in the air today as cooler conditions move in following a mild weekend. According to Environment Canada, Monday’s high is expected to reach 17°C, down from Sunday’s 20°C, with northeast winds gusting to 40 km/h. There are no weather alerts in effect for the Whitby and Oshawa area.
Sunday brought clear, sunny skies and a high of 20°C, with afternoon humidity dropping to 35%. Today’s forecast calls for a mix of sun and cloud, with the gusty northeast winds making it feel cooler than the actual temperature. The seasonal normals for this time of year are a high of 18°C and a low of 8°C, so Monday’s conditions are slightly below average.
The cooler weather aligns with seasonal forecasts that predicted a cooler-than-normal September for southern Ontario. Temperatures are expected to return closer to normal in October. Residents can look forward to a gradual warming trend later this week, with Friday expected to reach 20°C under sunny skies and Saturday also reaching 20°C under a mix of sun and cloud.
For boaters, the Town of Whitby’s Port Whitby Marina has advised that fluctuating Lake Ontario water levels may affect vessels with deeper drafts. The International Lake Ontario-St. Lawrence River Board reports lake levels remain above long-term averages but well below the record high set in 2017.
