Mount St. Louis, Ontario Weather
Mount St. Louis, 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 St. Louis in Simcoe.
Marine forecast and fishing conditions near Mount St. Louis.
Flight conditions near Mount St. Louis. Data source: locating…
Soil conditions, frost risk and crop weather for Mount St. Louis.
About Mount St. Louis, Ontario
Mount St. Louis is a locality in Simcoe, Ontario, Canada. It is classified as a village / hamlet. Mount St. Louis is located at 44.6058°N, 79.7014°W. It observes Eastern Time (UTC−5 / −4). Postal code area: L0L.
Mount St. Louis rises as a steady, modest elevation near the slopes of Moonstone Hill, where the land holds the quiet gravity of the Canadian Shield’s southern reach. It lies 21.6 km south-east of Midland, ON (from Midland, ON: bearing 138°T), and is situated 12.5 km south-south-west of Coldwater. The Sturgeon River winds through the lower reaches of the terrain, carving a path through the earth that reflects the pale, shifting light of the Ontario sky. At dusk, the air cools rapidly, carrying a damp, sharp clarity that settles over the fields and thickets, grounding Mount St. Louis in a stillness that feels both ancient and immediate. Nearby, the presence of Orr Lake offers a wider expanse of water to the landscape, while the distant, protected reaches of Parc national du Canada des Îles-de-la-Baie-Georgienne underscore the wilder character of the broader geography. Early settlement in the vicinity of Mount St. Louis was defined by the labor of the land, with families clearing the stubborn, rocky soil to carve out a living through agriculture and timber. The rhythm of daily life here remains connected to the seasonal turn of the earth, where the harvest and the winter frost dictate the pace of work and rest. Local industry has long looked to the natural gifts of the Sturgeon River and the surrounding woods, maintaining a focus on traditional crafts and land management that honors the history of the region. Even today, the character of Mount St. Louis persists in the way the wind moves across the open ridges, a reminder that the heritage of the people is tied to the enduring physical presence of the hills and the water.
Live animated radar for Mount St. Louis 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 St. Louis, Simcoe, Ontario |
| Coordinates | 44.605833°N, 79.701389°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | L0L |
| 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 St. Louis, Ontario Weather Page
This page provides live weather conditions and forecasts for Mount St. Louis, 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 St. Louis includes coordinates 44.605833°N, 79.701389°W, situated in Simcoe. Postal FSA: L0L. 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.