Unionville, Ontario Weather
Unionville, 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 Unionville in York.
Marine forecast and fishing conditions near Unionville.
Flight conditions near Unionville. Data source: locating…
Soil conditions, frost risk and crop weather for Unionville.
About Unionville, Ontario
Unionville is a urban community in York, Ontario, Canada. It is classified as a small locality. Unionville is located at 43.8678°N, 79.3203°W. It observes Eastern Time (UTC−5 / −4). Postal code area: L3R.
Unionville sits quietly upon a landscape defined by the modest rise of Heise Hill, where the air holds the crisp, settled stillness of the Ontario interior. It lies 4.7 km west-south-west of Markham, ON (from Markham, ON: bearing 258°T), and is situated 14.7 km north-north-east of Toronto. The light here at dusk possesses a singular clarity, casting long, bruised shadows across the fields that seem to hold the heat of the day long after the sun has slipped below the horizon. Though the East Humber River winds its way through the broader region some 18 km distant, the terrain around Unionville feels anchored by the earth itself, distant from the pull of the water. To the northeast, the expanse of the Parc urbain national du Canada de la Rouge stretches out 10 km away, and further still, the quiet basin of Simeon Lake rests 12 km from the center of the settlement. The history of Unionville lingers in the preserved storefronts and the deliberate pace of those who walk its streets, reflecting an economy that has transitioned from the necessary toil of early mills to a modern quietude. Local traditions maintain a reverence for the past, visible in the careful upkeep of structures that have withstood the changing seasons for generations. There is a particular texture to the brick and wood here, a sense of endurance that persists despite the encroaching sprawl of the surrounding region. Life in Unionville proceeds with a steady, watchful gravity, as if the residents understand that their heritage is a fragile thing, kept alive by the simple act of staying put while the world beyond continues its restless, noisy motion.
Live animated radar for Unionville 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 | Unionville, York, Ontario |
| Coordinates | 43.867778°N, 79.320278°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | L3R |
| 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 Unionville, Ontario Weather Page
This page provides live weather conditions and forecasts for Unionville, 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 Unionville includes coordinates 43.867778°N, 79.320278°W, situated in York. Postal FSA: L3R. 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.