Grafton, Ontario Weather
Grafton, 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 Grafton in Northumberland.
Marine forecast and fishing conditions near Grafton.
Flight conditions near Grafton. Data source: locating…
Soil conditions, frost risk and crop weather for Grafton.
About Grafton, Ontario
Grafton is a compact rural community in Northumberland, Ontario, Canada. It is classified as a town. Grafton is located at 43.9922°N, 78.0236°W. It observes Eastern Time (UTC−5 / −4). Postal code area: K9A.
Grafton rests upon the sloping terrain of Northumberland, where the land tilts toward the expansive horizon of Lake Ontario. It lies 11.7 km east-north-east of Cobourg, ON (from Cobourg, ON: bearing 74°T), and is situated 10.9 km west of Colborne. The air here holds a crisp, singular clarity, often gathering around the rise of Tank Hill to watch the evening light stretch long shadows across the fields. Beyond the immediate reach of the village, the Haldimand Conservation Area offers a quiet sanctuary of wild growth, standing as a reminder of the thick woods that once defined this shoreline. While the Indian River flows through the broader landscape some distance away, Grafton keeps its own counsel, defined by the steady, salt-tinged breeze that drifts inland from the water. The history of Grafton persists in the architecture of its older homes and the enduring focus on agricultural life that has long sustained the families residing here. Local industry maintains a modest, necessary pace, turning the deep soil to produce the sustenance that feeds the region. People move through their days with a quiet awareness of the changing seasons, acknowledging the persistence of a life lived close to the land. Grafton retains a character forged by generations of settlers who found purpose in the fertile earth and the proximity to the great lake, maintaining a way of life that values the stillness of the morning and the honest labor of the afternoon.
Live animated radar for Grafton 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 | Grafton, Northumberland, Ontario |
| Coordinates | 43.992222°N, 78.023611°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | K9A |
| 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 Grafton, Ontario Weather Page
This page provides live weather conditions and forecasts for Grafton, 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 Grafton includes coordinates 43.992222°N, 78.023611°W, situated in Northumberland. Postal FSA: K9A. 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.