Mount Dennis, Ontario Weather
Mount Dennis, Ontario — live current conditions, hourly and 7-day forecasts, ECCC alerts, aviation weather, radar and satellite imagery, marine and fishing conditions with a solunar forecast, soil and crop conditions for Mount Dennis in York.
Marine forecast and fishing conditions near Mount Dennis.
Flight conditions near Mount Dennis. Data source: locating…
Soil conditions, frost risk and crop weather for Mount Dennis.
About Mount Dennis, Ontario
Mount Dennis is a urban community in York, Ontario, Canada. It is classified as a small locality. Mount Dennis is located at 43.6869°N, 79.4892°W. It observes Eastern Time (UTC−5 / −4). Postal code area: M6M.
Mount Dennis rises with a quiet, steady presence near the Heise Hill, holding its ground above the Humber River. It lies 11.1 km west-south-west of Toronto, ON (from Toronto, ON: bearing 237°T), and is situated 13.8 km east-south-east of Claireville. The air here carries the weight of a long industrial memory, where the work of generations once defined the rhythm of the streets and the hum of the local economy. Mount Dennis maintains a character shaped by its roots as a hub of manufacturing, though the landscape now shifts toward a blend of residential life and pockets of green space. Beyond the immediate reach of the neighbourhood, the distant Claireville Reservoir sits 13 km away, and the expansive Parc urbain national du Canada de la Rouge lies 34 km off, leaving this specific corner of the land to focus on its own steady, industrious pace. At the end of the day, the light catches the brickwork of older buildings in a way that makes the past seem almost tangible, a lingering warmth that settles over the pavement before the evening chill takes hold.
Live animated radar for Mount Dennis and surroundings — RainViewer.
NOAA GOES-19 GEOCOLOR — Canada / Northern U.S. sector. Auto-refreshes every 10 minutes on page reload. Frames the whole country from Newfoundland to the BC coast, plus adjacent Pacific and Atlantic storm approaches.
Source: NOAA/NESDIS GOES-19 · Public domain · Sector code can (Canada / Northern U.S.) · Auto-updates on page reload
| Location | Mount Dennis, York, Ontario |
| Coordinates | 43.686945°N, 79.489167°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | M6M |
| Area Code | 226, 249, 289, 343, 365, 382, 416, 437, 519, 548, 613, 647, 705, 742, 807, 905 |
| Page generated | July 2026 |
| Weather data | Open-Meteo (open-source), Environment and Climate Change Canada |
About This Mount Dennis, Ontario Weather Page
This page provides live weather conditions and forecasts for Mount Dennis, Ontario, including current conditions, a 24-hour hourly forecast, 7-day outlook, ECCC extended text forecast, real-time aviation weather (live METAR and TAF reports from the nearest reporting airport, with a modelled estimate shown when no station is in range), precipitation radar and NOAA GOES satellite imagery. Additional sections may include marine and fishing conditions with a solunar forecast for coastal localities, and soil temperature, crop weather and live Water Survey of Canada river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Mount Dennis includes coordinates 43.686945°N, 79.489167°W, situated in York. Postal FSA: M6M. Telephone area code: 226, 249, 289, 343, 365, 382, 416, 437, 519, 548, 613, 647, 705, 742, 807, 905. Timezone: Eastern Time (UTC−5 / −4).
Weather data is sourced from Environment and Climate Change Canada (ECCC) and the open-source Open-Meteo API. Aviation data is sourced from aviationweather.gov, with a modelled estimate used where no nearby reporting station is available. River and stream data is sourced from Water Survey of Canada (WSC) via the ECCC GeoMet realtime hydrometric feed. Marine and solunar data are modelled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-19 and is public domain.