St. Marys, Ohio Weather
St. Marys, Ohio — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery for St. Marys, Auglaize County.
Flight conditions near St. Marys. Data source: locating…
About St. Marys, Ohio
St. Marys exhales a quiet, Midwestern breath, its landscape a gentle conversation between fertile fields and the subtle embrace of water. It lies 20.3 miles south-west of Lima, OH (from Lima, OH: bearing 227°T), and is situated 9.5 miles east of Celina. Rolling farmland, etched with the straight lines of cultivation, gives way to the more sinuous curves of the Auglaize River and the expansive shimmer of Grand Lake St. Marys. The air here, particularly as the sun begins its slow descent, carries a damp, earthy scent, mingling with the distant hum of tractors and the sharp, sweet perfume of newly mown grass. The houses, many with wide porches and mature trees casting dappled shade, seem to settle comfortably into the land, their brick and clapboard weathered by decades of sun and snow. The history of St. Marys is deeply entwined with the water that defines it, from its early days as a port on the Miami and Erie Canal to its present-day status as a vibrant hub for recreational boating on Grand Lake. This vast, man-made lake, once a vital artery for commerce, now draws visitors and residents alike with its beaches and opportunities for fishing and watersports, infusing the local economy with a lively summer spirit. The town’s industrial past, marked by manufacturing and agriculture, still echoes in the sturdy architecture and the enduring work ethic of its people, a blend of practicality and a deep-rooted connection to the soil and the surrounding waterways. St. Marys carries the grace of a place that understands the ebb and flow of seasons, a rhythm dictated as much by the agricultural cycle as by the lapping of waves against the shore.
Live animated radar for St. Marys 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 | St. Marys, Auglaize County, Ohio |
| Coordinates | 40.54227°N, 84.389396°W |
| Timezone | Eastern Time (America/New_York) |
| ZIP Code(s) | 45885 |
| Area Code | 234, 330 |
| Page generated | July 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This St. Marys, Ohio Weather Page
This page provides live weather conditions and forecasts for St. Marys, Ohio, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, real-time aviation weather (live METAR and TAF reports from the nearest reporting airport, with a modeled estimate shown when no station is in range), precipitation radar and NOAA GOES-16 satellite imagery. 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 St. Marys includes coordinates 40.542270°N, 84.389396°W, situated in Auglaize County. ZIP code 45885. Telephone area code: 234, 330. Timezone: Eastern Time (America/New_York).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. Aviation data is sourced from aviationweather.gov (NOAA), with a modeled estimate used where no nearby reporting station is available. 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.
