Over the next 10 days Dorchester tops out around 83° (Sunday) and dips to 54° on the coolest night (Tuesday). Roughly 1.4 in of rain falls over the period, with Monday the most likely wet day (89%). Expect a blustery spell — gusts near 29 mph on Saturday. No watches or warnings are active for the area right now. Right now Dorchester is about 24° cooler than nearby Detroit. Longer view: four full seasons with serious winter and real summer heat.
Dorchester, ON · Elev 853 ft · 42.98°N, 81.07°W · Ontario · Forecast computed for these exact coordinates