The Durham Weather Forecast calls for a mainly sunny and comfortable Thursday across Oshawa, Whitby and surrounding communities, with daytime temperatures expected to reach approximately 25 C.
Environment and Climate Change Canada forecasts mainly sunny skies across southern Ontario during the morning of Thursday, Aug. 20, although Durham Region is expected to be slightly cooler than some communities farther west.
In Oshawa, Whitby and other parts of Durham Region, the daytime high is forecast to reach approximately 25 C, with humidity making conditions feel closer to 27 C.
Elsewhere in southern Ontario, including Toronto, Mississauga, Brampton, Hamilton, Burlington, Oakville and Niagara Region, temperatures could climb to around 26 C and feel closer to 29 C with the humidex.
Sunny Start Expected Across Durham Region
Thursday morning is expected to begin with plenty of sunshine across Durham Region.
Residents heading to work, running errands or spending time outdoors should see relatively pleasant summer conditions during the first part of the day.
Temperatures will gradually climb toward the afternoon high of approximately 25 C.
Although humidity will make conditions feel slightly warmer, the expected humidex of around 27 C in Durham is lower than the 29 C forecast for several other parts of southern Ontario.
That should make Thursday warm without reaching the more uncomfortable heat levels experienced during some earlier summer periods.
Clouds Could Develop During Afternoon
The Durham Weather Forecast suggests conditions may become cloudier during the afternoon.
The change does not currently point to a significant rainfall threat for Thursday in the supplied forecast.
Instead, periods of cloud are expected before skies begin clearing again during the evening.
Residents planning afternoon activities may therefore see less sunshine than during the morning, but generally favourable conditions are expected to continue.
Cooler Evening Ahead
Temperatures will fall considerably once the sun goes down.
Across southern Ontario, overnight lows are expected to drop to approximately 12 C to 13 C.
That will provide a noticeable break from the daytime warmth.
Residents heading outside during the late evening or early morning hours may want a light layer, particularly after temperatures near 25 C during the afternoon.
The cooler overnight temperatures are also slightly below the normal seasonal nighttime average of approximately 14 C cited in the supplied forecast.
Friday Expected to Bring Similar Conditions
Friday is expected to look fairly similar to Thursday.
Warm and generally pleasant conditions should continue before a more unsettled weather pattern develops over the weekend.
Residents hoping to spend time outdoors may therefore want to take advantage of Thursday and Friday.
The current outlook suggests rain could return during the weekend.
Specific rainfall timing and amounts may become clearer as updated forecasts are issued.
Durham Slightly Cooler Than Much of GTA
The notable difference in Thursday’s forecast is that Durham Region is expected to stay slightly cooler than many communities farther west.
Oshawa and Whitby are forecast to reach around 25 C with a humidex of 27 C.
By comparison, much of the Greater Toronto and Hamilton areas could reach 26 C while feeling like approximately 29 C.
The difference is modest but could make conditions slightly more comfortable for Durham residents.
Temperatures Close to Seasonal Normal
Thursday’s forecast is close to what would normally be expected for this point in August.
Environment and Climate Change Canada says normal daytime highs at this time of year are approximately 25 C, with overnight lows near 14 C.
That means Durham’s forecast high will be almost exactly seasonal.
The overnight temperature, however, could fall a degree or two below normal.
Rain Could Return on Weekend
While Thursday and Friday should offer largely favourable conditions, residents should keep an eye on the weekend forecast.
The supplied outlook indicates rain is expected to return.
Anyone planning outdoor events, sports, travel or recreational activities during the weekend may want to monitor updated forecasts as the timing becomes clearer.
For Thursday, however, the Durham Weather Forecast remains relatively straightforward: mainly sunny skies during the morning, some cloud developing later, a high near 25 C and a humidex around 27 C.
