Unionville, New York Weather
Unionville, New York — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, tide predictions, marine conditions and a solunar fishing forecast, soil and crop conditions for Unionville, St. Lawrence County.
Tides, marine forecast and fishing conditions near Unionville. Tide source:
Full aviation weather for Unionville is published on the Potsdam Municipal Airport Damon Field (KPTD) page, 6 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 5 airfields within reach of Unionville have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Unionville: Massena International Airport Richards Field (KMSS) 28 km · Degrasse Moores Airport (K1E8) 36 km · Ogdensburg International Airport (KOGS) 37 km · Malone Dufort Airport (KMAL) 55 km
Conditions reported at KPTD describe the airfield itself. Weather 6 km away can differ, particularly in terrain or near the coast. For conditions at Unionville specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for Unionville.
About Unionville, New York
Unionville rests in a broad, shallow valley, where the land gently slopes toward the St. Lawrence River. It lies 89.3 miles west of Burlington, VT (from Burlington, VT: bearing 281°T), and is situated 3.1 miles north-north-west of Potsdam. The fields here are a patchwork of greens and golds, often yielding to stands of mature maple and birch trees that hold their leaves like secrets until late autumn. The air, especially after a rain, carries a clean, earthy scent, a reminder of the rich loam that underpins this corner of northern New York. Houses, often weathered clapboard or sturdy brick, are spaced generously along quiet roads, their porches collecting the soft, diffused light of the northern sun. The distant hum of agricultural machinery is a familiar sound, a steady counterpoint to the rustle of leaves and the occasional call of a hawk circling overhead. This landscape has long been shaped by the rhythms of agriculture, a tradition that still defines Unionville's character and economy. Generations have worked this soil, cultivating crops and raising livestock, a legacy evident in the enduring farmsteads and the deep understanding of the seasons that permeates local life. While the river itself is not a direct artery through Unionville, its influence is felt in the fertile land and the humid summers that foster robust growth. The town’s history is one of steady persistence, a quiet unfolding rather than dramatic upheaval, and that same unhurried spirit can still be observed in the way life moves here, with a grounded appreciation for the tangible and the enduring.
Live animated radar for Unionville and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Unionville, St. Lawrence County, New York |
| Coordinates | 44.712835°N, 74.996864°W |
| Timezone | Eastern Time (America/New_York) |
| ZIP Code(s) | 12740, 10988 |
| Area Code | 845, 914 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Unionville, New York Weather Page
This page provides live weather conditions and forecasts for Unionville, New York, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Unionville includes coordinates 44.712835°N, 74.996864°W, situated in St. Lawrence County. ZIP code 12740, 10988. Telephone area code: 845, 914. Timezone: Eastern Time (America/New_York).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled 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-East and is public domain.
