L'Arrondissement, Quebec Weather
L'Arrondissement, 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 L'Arrondissement in La Prairie; Roussillon.
Marine forecast and fishing conditions near L'Arrondissement.
Flight conditions near L'Arrondissement. Data source: locating…
Soil conditions, frost risk and crop weather for L'Arrondissement.
About L'Arrondissement, Quebec
L'Arrondissement is a residential area in La Prairie; Roussillon, Quebec, Canada. It is classified as a small locality. L'Arrondissement is located at 45.3933°N, 73.4831°W. It observes Eastern Time (UTC−5 / −4). Postal code area: J5R.
L'Arrondissement rests upon the flat, fertile plains of La Prairie, holding a quiet vigil where the land meets the broad, moving currents of the St. Lawrence. It lies 14.0 km south-south-east of Montréal, QC (from Montréal, QC: bearing 157°T), and is situated 14.0 km south-south-west of Longueuil. The horizon here is wide and unassuming, defined by the low-lying reaches of the Le Coteau and the steady, narrow passage of the Rivière de la Tortue as it veins through the terrain. In the late afternoon, the light turns a bruised gold, catching the silt of the riverbank and casting long, thin shadows across the fields that stretch toward the distant silhouette of the Parc national du Mont-Saint-Bruno. Even from thirteen kilometers away, the presence of the Lac de l'Île Notre-Dame lingers in the damp, cooling air that settles over the grass when the sun dips below the western edge of the Roussillon plain. History clings to L'Arrondissement through the steady persistence of its agricultural roots, which have evolved into a modern economy that balances suburban growth with the memory of the furrowed earth. The pace of life follows the seasonal shift of the Quebec climate, where the biting frost of winter gives way to a sudden, vibrant green that reclaims the banks of the Rivière de la Tortue. Local traditions remain grounded in the quiet industry of those who have long made their homes near the St. Lawrence, maintaining a character shaped by the intersection of colonial heritage and contemporary suburban expansion. Throughout the day, the muffled sound of traffic toward the city mixes with the rustle of wind moving across the open spaces, marking a passage of time that is measured less by grand events and more by the recurring, familiar light that graces the rooftops of L'Arrondissement at dusk.
L'Arrondissement s'étire avec une patience tranquille sur les rives du Saint-Laurent, là où le fleuve impose sa présence souveraine et ses courants profonds. À proximité du Coteau, le relief s'adoucit pour épouser les méandres de la Rivière de la Tortue, dont les eaux calmes serpentent entre les terres fertiles qui furent, jadis, le berceau d'une agriculture laborieuse. La lumière du crépuscule descend sur ces plaines avec une douceur particulière, teintant les berges d'une clarté argentée qui semble suspendre le rythme des activités quotidiennes. Le paysage, marqué par cet héritage agricole, se déploie dans une étendue ouverte où le ciel paraît plus vaste, contrastant avec la silhouette lointaine du Parc national du Mont-Saint-Bruno qui dessine une ligne sombre sur l'horizon, à vingt-deux kilomètres de distance. Plus loin encore, à environ treize kilomètres, le Lac de l'Île Notre-Dame ajoute une note de sérénité à ce territoire façonné par les eaux. L'Arrondissement conserve dans ses manières une retenue héritée des défricheurs, une fidélité aux gestes simples et une attention portée au murmure du vent sur les terres basses, offrant aux passants le spectacle d'une existence qui s'accorde, jour après jour, au souffle du fleuve.
Live animated radar for L'Arrondissement 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 | L'Arrondissement, La Prairie; Roussillon, Quebec |
| Coordinates | 45.393333°N, 73.483056°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | J5R |
| 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 L'Arrondissement, Quebec Weather Page
This page provides live weather conditions and forecasts for L'Arrondissement, 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 L'Arrondissement includes coordinates 45.393333°N, 73.483056°W, situated in La Prairie; Roussillon. Postal FSA: J5R. 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.