Grimsby, Ontario Weather
Grimsby, 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 Grimsby in Niagara.
Marine forecast and fishing conditions near Grimsby.
Flight conditions near Grimsby. Data source: locating…
Soil conditions, frost risk and crop weather for Grimsby.
About Grimsby, Ontario
Grimsby is a town in Niagara, Ontario, Canada. It has a population of 28,883. Grimsby is located at 43.1858°N, 79.5727°W. It observes Eastern Time (UTC−5 / −4). Postal code area: L3M.
Grimsby holds a quiet vigil where the land meets the vast, shifting expanse of Lake Ontario. It lies 22.8 km east-south-east of Hamilton, ON (from Hamilton, ON: bearing 107°T), and is situated 8.1 km west-north-west of Beamsville. Near the Short Hills, the earth rises with a deliberate, ancient patience, framing the horizon in a way that catches the low, amber light of late afternoon. At the edge of the escarpment, the air feels sharpened by the proximity of the water, carrying a stillness that settles over the trees. Beamer Memorial Conservation Area offers a vantage point where the silence is broken only by the sudden, percussive rush of Beamers Falls, a presence that anchors the landscape in a physical, undeniable way. The history of Grimsby lingers in the architecture of its older streets, where the labor of past generations is visible in stone and timber. While the local economy has shifted from its early agricultural foundations toward modern industry and commerce, the identity of Grimsby remains rooted in its relationship to the natural boundaries that define its borders. Beyond the suburban growth, the proximity of the Welland River serves as a reminder of the broader water systems that shaped this region long before modern settlement. Grimsby continues to balance its heritage with a steady momentum, preserving the character of a place that knows both the weight of its history and the quiet beauty of its own geography.
Live animated radar for Grimsby 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 | Grimsby, Niagara, Ontario |
| Coordinates | 43.18584°N, 79.57266°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | L3M |
| 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 Grimsby, Ontario Weather Page
This page provides live weather conditions and forecasts for Grimsby, 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 Grimsby includes coordinates 43.185840°N, 79.572660°W, situated in Niagara. Postal FSA: L3M. 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.