Lac-Long-Sud, Quebec — 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 Lac-Long-Sud in Saint-Alphonse-Rodriguez; Matawinie.
Marine forecast and fishing conditions near Lac-Long-Sud.
Flight conditions near Lac-Long-Sud. Data source: locating…
Soil conditions, frost risk and crop weather for Lac-Long-Sud.
Lac-Long-Sud is a hamlet in Saint-Alphonse-Rodriguez; Matawinie, Quebec, Canada. It is classified as a village / hamlet. Lac-Long-Sud is located at 46.1583°N, 73.6708°W. It observes Eastern Time (UTC−5 / −4). Postal code area: J6E.
Lac-Long-Sud rests in a basin of quiet endurance beneath the watchful presence of Mont Saint-Jean. It lies 23.1 km north-west of Joliette, QC (from Joliette, QC: bearing 311°T), and is situated 13.2 km north-north-east of Rawdon. The air here holds the sharp, resinous scent of spruce and balsam, settling heavy over the water as the sun dips behind the rising shoulder of the mountain. Only a kilometer away, the stillness of Lac Long mirrors the grey-blue shift of the evening sky, while the distant, persistent pulse of the Rivière L'Assomption moves through the landscape six kilometers to the south, carving a path through the ancient, rugged terrain of the Matawinie. Development in Lac-Long-Sud has long followed the slow, deliberate turn of the seasons, rooted in the labor of timber and the modest persistence of seasonal dwellings that dot the shoreline. The local character draws strength from this geography, where the memory of Chutes Mason, thirteen kilometers distant, reminds residents of the power held by the hidden currents of the region. Life in Lac-Long-Sud moves with the practical focus of those who understand the weight of a northern winter, finding continuity in the simple, recurring tasks of maintaining the homestead and observing the subtle changes in the light as it catches the jagged granite edges of the Saint-Alphonse-Rodriguez hills.
Lac-Long-Sud s’étend avec une humilité certaine dans les replis boisés qui bordent le Mont Saint-Jean, là où la lumière décline avec une lenteur particulière avant de se perdre derrière les crêtes. Le relief accidenté de cette partie de la Matawinie impose une rigueur naturelle aux gestes de ceux qui habitent ces terres, héritiers d’une patience forgée par la rudesse des hivers et le travail forestier. À peine à un kilomètre de distance, le Lac Long offre une surface sombre et apaisée, miroir immobile qui semble absorber les murmures de la forêt environnante. Non loin de là, la Rivière L'Assomption trace son chemin avec une persévérance silencieuse, rythmant le paysage de son cours capricieux situé à six kilomètres du secteur. Bien plus loin, les Chutes Mason ajoutent au domaine une ponctuation sonore que le vent transporte parfois jusqu’aux habitations isolées. Lac-Long-Sud conserve cette manière d’être simple et discrète, presque secrète, tandis que les premières ombres de la soirée viennent envelopper les pins et les rochers. La vie y suit le cours lent des eaux et des saisons, nourrie par un lien profond avec ce sol rocailleux, offrant aux rares visiteurs la sensation rare d’un monde qui préfère la profondeur du silence à l’agitation des grandes routes.
Live animated radar for Lac-Long-Sud 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 | Lac-Long-Sud, Saint-Alphonse-Rodriguez; Matawinie, Quebec |
| Coordinates | 46.158333°N, 73.670833°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | J6E |
| Area Code | 263, 354, 367, 418, 438, 450, 514, 579, 581, 819, 873 |
| Page generated | July 2026 |
| Weather data | Open-Meteo (open-source), Environment and Climate Change Canada |
This page provides live weather conditions and forecasts for Lac-Long-Sud, Quebec, 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 Lac-Long-Sud includes coordinates 46.158333°N, 73.670833°W, situated in Saint-Alphonse-Rodriguez; Matawinie. Postal FSA: J6E. Telephone area code: 263, 354, 367, 418, 438, 450, 514, 579, 581, 819, 873. 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.