Walnut, Ontario Weather
Walnut, 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 Walnut in Lambton.
Marine forecast and fishing conditions near Walnut.
Flight conditions near Walnut. Data source: locating…
Soil conditions, frost risk and crop weather for Walnut.
About Walnut, Ontario
Walnut is a locality in Lambton, Ontario, Canada. It is classified as a village / hamlet. Walnut is located at 42.8817°N, 81.8932°W. It observes Eastern Time (UTC−5 / −4). Postal code area: N0N.
Walnut sits nestled within the flat, fertile stretches of Lambton, where the horizon pulls the sky down to meet the dark, rich earth in a long, quiet embrace. It lies 36.3 km east-south-east of Sarnia, ON (from Sarnia, ON: bearing 108°T), and is situated 7.7 km south of Watford. The land here holds the light of the setting sun with a heavy, golden patience, casting long shadows across the fields that define the local geography. Five kilometres away, the Sydenham River moves with a deliberate, muddy grace, carving a path through the landscape that shapes the way the air cools as evening descends. The terrain remains steady and open, a vast expanse of agricultural ground where the wind carries the scent of turned soil and the distant, dry rustle of corn stalks. Walnut maintains a character defined by the steady work of the seasons and the quiet persistence of those who cultivate the surrounding acreage. Eight kilometres to the east, the A.W. Campbell Conservation Area offers a pocket of dense, wooded refuge, providing a stark contrast to the cleared, productive fields that form the backbone of the local economy. Life in Walnut follows the turning of the crops, a cycle that dictates the pace of the day from the first frost to the final harvest. The people here move with a practical, grounded awareness, anchored by a deep familiarity with the land and the simple, enduring markers that define their daily navigation through the countryside.
Live animated radar for Walnut 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 | Walnut, Lambton, Ontario |
| Coordinates | 42.88166°N, 81.89317°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | N0N |
| 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 Walnut, Ontario Weather Page
This page provides live weather conditions and forecasts for Walnut, 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 Walnut includes coordinates 42.881660°N, 81.893170°W, situated in Lambton. Postal FSA: N0N. 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.