Gretna, Ontario Weather
Gretna, 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 Gretna in Lennox and Addington.
Marine forecast and fishing conditions near Gretna.
Flight conditions near Gretna. Data source: locating…
Soil conditions, frost risk and crop weather for Gretna.
About Gretna, Ontario
Gretna is a locality in Lennox and Addington, Ontario, Canada. It is classified as a village / hamlet. Gretna is located at 44.1926°N, 76.9826°W. It observes Eastern Time (UTC−5 / −4). Postal code area: K7R.
Gretna rests upon the low, limestone-rich margins where the land yields to the expansive reach of Lake Ontario. It lies 32.0 km east of Belleville, ON (from Belleville, ON: bearing 86°T), and is situated 5.1 km south-south-west of Greater Napanee. The Napanee River carves a deliberate path toward the water, its currents pulling against the stillness of the shoreline while Roblin Hill rises nearby to catch the first grey light of morning. When the air turns crisp, the light takes on a brittle, silver clarity that illuminates the weathered stone and the deep, dark soil of the surrounding fields. Residents often find their way toward the quiet paths of the Napanee Conservation Area, located only 6 km away, where the brush grows thick and the earth feels ancient underfoot. Even the distant, rushing mist of Buttermilk Falls, situated 16 km away, seems to lend a hushed intensity to the horizon, grounding Gretna in a landscape defined by the persistent, cold weight of water and rock. The local character of Gretna draws from a long history of agricultural resilience, where the economy has historically leaned into the productivity of the soil and the steady flow of the river to move goods through Lennox and Addington. Daily life here maintains a focused intensity, marked by the mechanical hum of tractors in the autumn and the stark, quiet endurance required by the winters. Generations have shaped their livelihoods around the rhythms of the seasons, valuing a certain pragmatism that respects the limits of the terrain. While the pace is measured, the identity of Gretna persists through the seasonal cycles of planting and harvest, holding fast to a legacy of land stewardship that remains visible in the orderly fences and the enduring stone foundations scattered across the countryside.
Live animated radar for Gretna 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 | Gretna, Lennox and Addington, Ontario |
| Coordinates | 44.19261°N, 76.98255°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | K7R |
| 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 Gretna, Ontario Weather Page
This page provides live weather conditions and forecasts for Gretna, 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 Gretna includes coordinates 44.192610°N, 76.982550°W, situated in Lennox and Addington. Postal FSA: K7R. 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.