Overnight and short-term outlook
Clarington residents should expect a mostly overcast night with temperatures holding in the upper 70s Fahrenheit late this evening, according to the latest hourly forecast data. Relative humidity is high, around 91 per cent, and winds are light from the southwest at roughly 2–8 mph, producing only a gentle breeze in most neighbourhoods.
What to expect through the next few days
The outlook through the coming days shows a pattern of warm daytime temperatures combined with intermittent precipitation. The hourly forecast projects a period of moderate rain overnight into tomorrow morning before sunshine returns for portions of the afternoon. Daytime highs are forecast to climb into the low 90s Fahrenheit on some afternoons, with evening readings easing back into the 70s.
| When | Condition | High / Low (°F) | Precipitation |
|---|---|---|---|
| Tonight | Overcast | 77° (late) | Chance of light rain, trace to 0.02 in |
| Tomorrow | Moderate rain then sun | 91° / 71° | ~0.04 in |
| Thu, Sep 3 | Moderate rain | 93° / 70° | ~0.16 in |
| Fri, Sep 4 | Moderate rain | 83° / 66° | ~0.39 in |
Impacts and local considerations
Warm daytime temperatures combined with high humidity early in the forecast window can increase discomfort for those working outdoors and for vulnerable residents. Brief but moderate bursts of rain are also expected at times through Friday, with accumulated amounts shown in the hourly outlook ranging from small traces to a few tenths of an inch.
- Heat and humidity: warm afternoons and high humidity—monitor children, seniors and pets and avoid strenuous activity during the hottest hours.
- Showers and puddles: short-lived moderate rain could lead to ponding on low-lying roads and yards—drive carefully and watch for surface runoff.
- Wind: winds are forecast to remain light, though gusts up to about 16 mph were noted in the hourly guidance—secure loose outdoor items if gusty conditions develop.
The forecast data also shows a trend toward cooler and more settled conditions by the weekend, with partly cloudy to sunny skies expected by Sunday and Monday and lower overnight lows. However, light rain returns in some model guidance by the middle of next week.
One note about the source data: the raw hourly listing includes a 15-day outlook and references that same hourly snapshot alongside a U.S. location heading. Residents should treat the numeric values here as hourly guidance rather than a site-specific municipal warning; for the most local, kilometre-scale forecast and any watches or warnings consult Environment and Climate Change Canada or the Region of Durham’s emergency updates.
For now, Clarington households can expect a warm, humid start to September with scattered moderate showers possible through the first half of the week. Keep rain gear handy and pay attention to updated forecasts as minor shifts in timing could change where the heavier bursts of rain fall.
