Sir-John Lake, Quebec Weather
Sir-John Lake, 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 Sir-John Lake in Lachute; Argenteuil.
Marine forecast and fishing conditions near Sir-John Lake.
Flight conditions near Sir-John Lake. Data source: locating…
Soil conditions, frost risk and crop weather for Sir-John Lake.
About Sir-John Lake, Quebec
Sir-John Lake is a locality in Lachute; Argenteuil, Quebec, Canada. It is classified as a small locality. Sir-John Lake is located at 45.7167°N, 74.2833°W. It observes Eastern Time (UTC−5 / −4). Postal code area: J8H.
Sir-John Lake rests within the quiet reach of the Mont Green, cradled by a landscape where the air holds a lingering, sharp clarity. It lies 8.0 km north-north-east of Lachute, QC (from Lachute, QC: bearing 32°T), and is situated 10.7 km east-north-east of Brownsburg-Chatham. Beyond the immediate basin, the Rivière du Nord flows with a steady, hushed purpose about 5 km away, while the nearby Lac Sir-John sits only 1 km distant, reflecting the sky like a fallen shard of glass. The terrain here rises in modest, firm swells, defined by the ancient character of the Mont Green that anchors the horizon. As evening descends, the light catches the surface of Sir-John Lake, turning the water into a bruised plum colour that seems to hold the day’s heat long after the sun has slipped behind the trees. The history of this locality reflects a slow, deliberate growth, rooted in the hard-won clarity of the Argenteuil hills. While Parc national d'Oka stands some 33 km away as a reminder of the wider protected wilderness, the life around Sir-John Lake maintains a sense of isolation that favors the small-scale farm and the private woodlot. Local industry has historically looked to the timber and the soil, shaping a character that values resilience over rapid change. In the quiet hours, one might notice the particular, resonant stillness that defines the region, a quality that suggests the land keeps its own counsel, unbothered by the restless pacing of the world beyond the Mont Green.
Sir-John Lake s'étire dans une langueur contemplative sous la lumière changeante du crépuscule, là où les pentes du Mont Green semblent protéger les esprits de cette terre d'Argenteuil. Le paysage se déploie avec une retenue naturelle, offrant aux regards la silhouette sombre des arbres qui se mirent dans les eaux calmes du Lac Sir-John, situé à un jet de pierre. À quelques kilomètres, la Rivière du Nord trace son chemin avec une persistance tranquille, insufflant une fraîcheur vivace qui imprègne l'air, tandis que le Parc national d'Oka, plus lointain, rappelle la vastitude des horizons environnants. Les anciens sentiers forestiers rappellent les modes de vie d'autrefois, où l'agriculture façonnait le quotidien des familles avant que l'industrie ne vienne ponctuer le silence des collines. Sir-John Lake conserve cette atmosphère de quiétude minérale, une présence qui ne demande rien d'autre que d'être observée, loin de l'agitation des grands axes. Chaque souffle de vent porte la mémoire des terres labourées, invitant ceux qui s'y attardent à goûter à la texture granuleuse du sol et à la clarté des eaux dormantes, loin des artifices, dans une simplicité qui définit le caractère singulier de cette contrée québécoise.
Live animated radar for Sir-John Lake 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 | Sir-John Lake, Lachute; Argenteuil, Quebec |
| Coordinates | 45.716667°N, 74.283333°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | J8H |
| 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 |
About This Sir-John Lake, Quebec Weather Page
This page provides live weather conditions and forecasts for Sir-John Lake, 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 Sir-John Lake includes coordinates 45.716667°N, 74.283333°W, situated in Lachute; Argenteuil. Postal FSA: J8H. 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.