Residents of Orillia, Ontario, can prepare for increasing cloudiness, strengthening southeast winds, and a high of 16 C today, according to the weather forecast published by OrilliaMatters on October 11, 2026. Cloudy conditions are expected to persist into the overnight hours, accompanied by developing fog patches and temperatures dropping to a low of 11 C.
Detailed Breakdown of Today’s Weather Conditions
Today’s atmospheric setup brings notable wind and humidity to the region. The forecast calls for southeast winds moving at 20 km/h, with gusts reaching up to 40 km/h this morning. Local atmospheric metrics indicate a high humidity level of 91 percent, a dew point sitting at 8.8 C, and an atmospheric pressure reading of 102.4 kPa that is currently falling.
For those heading outdoors, the ultraviolet (UV) index is forecasted to reach 4, which is classified as moderate.
Looking Ahead to Monday’s Forecast
Monday brings warmer temperatures alongside continued cloud cover. The regional forecast projects cloudy skies with a daytime high reaching 22 C.
Morning fog patches are anticipated to dissipate as the day progresses. Meanwhile, southwest winds will increase to 20 km/h, bringing afternoon gusts of up to 40 km/h. Due to the combination of warmth and moisture, the humidex is expected to climb to 26, while the UV index will remain moderate at 3.
Orillia Weather Summary Table
| Metric / Timeframe | Today (October 11, 2026) | Monday (October 12, 2026) |
|---|---|---|
| Condition | Increasing cloudiness, fog tonight | Cloudy, morning fog clearing |
| High Temperature | 16 C | 22 C |
| Low Temperature | 11 C | N/A |
| Wind Speeds | SE 20 km/h, gusts to 40 km/h | SW 20 km/h, gusts to 40 km/h |
| Humidity / Dew Point | 91% / 8.8 C | Humidex reaching 26 |
| UV Index | 4 (Moderate) | 3 (Moderate) |
Frequently Asked Questions
What is the expected high temperature in Orillia today?
The forecasted high temperature for Orillia today is 16 C, with skies turning increasingly cloudy.
What are the wind conditions expected today?
Southeast winds are expected to reach 20 km/h, with morning gusts pushing up to 40 km/h.
Will there be any fog tonight in Orillia?
Yes, cloudy conditions will continue overnight with fog patches expected to develop as temperatures fall to 11 C.
What is the weather outlook for Monday?
Monday is expected to bring cloudy skies, a warmer high of 22 C, and southwest winds with afternoon gusts up to 40 km/h.
