St. Elmo, Ontario Weather
St. Elmo, 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 St. Elmo in Glengarry.
Marine forecast and fishing conditions near St. Elmo.
Flight conditions near St. Elmo. Data source: locating…
Soil conditions, frost risk and crop weather for St. Elmo.
About St. Elmo, Ontario
St. Elmo is a locality in Glengarry, Ontario, Canada. It is classified as a village / hamlet. St. Elmo is located at 45.3123°N, 74.8743°W. It observes Eastern Time (UTC−5 / −4). Postal code area: K0C.
St. Elmo sits nestled within the quiet, rolling terrain of Glengarry, a landscape defined by the modest elevation of Bonnie Hill. It lies 33.8 km north-north-west of Cornwall, ON (from Cornwall, ON: bearing 340°T), and is situated 13.0 km north-west of Apple Hill. The earth here holds the heavy, damp scent of fields turning toward evening, where the light thins into a pale, bruised gold against the horizon. While the Rigaud River flows some 13 km away and Black Lake sits 11 km distant, the immediate surroundings of St. Elmo are marked by the stillness of open pasture and the persistence of deep-rooted woodlots. Even the air feels distinct, carrying a coolness that settles early over the grass, suggesting a world that prefers the company of its own horizon to the bustle of distant landmarks like the Parc national de Plaisance, located 38 km to the north. St. Elmo carries the weight of a long agricultural history, where the rhythms of the seasons dictate the movement of the day far more than the clocks on the wall. The local economy remains rooted in the productivity of the soil, with generations of families maintaining the barns and fences that define the edges of the properties. Life in St. Elmo moves with a deliberate, steady gravity, observed in the way the wind catches the tall, dry stalks of late-season crops or the sudden, sharp silence that follows the passage of a solitary vehicle. It is a place that values the endurance of its quietude, holding fast to a legacy of manual labor and the simple, profound satisfaction of a harvest brought in before the first frost bites the ground.
Live animated radar for St. Elmo 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 | St. Elmo, Glengarry, Ontario |
| Coordinates | 45.31227°N, 74.87429°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | K0C |
| 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 St. Elmo, Ontario Weather Page
This page provides live weather conditions and forecasts for St. Elmo, 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 St. Elmo includes coordinates 45.312270°N, 74.874290°W, situated in Glengarry. Postal FSA: K0C. 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.