Grand Lake St. Marys lake and shoreline

Grand Lake St. Marys Weather

Ohio

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Real-time weather conditions and forecast for Grand Lake St. Marys

Current Conditions

Live data

As of 1:35 AM EDT

Neil Armstrong AirportObservation site details

Calm winds.

Clear skies over Grand Lake St. Marys.

  • Humidity

    87%

  • Visibility

    10 mi

    Excellent

Sunrise

8:02 AM

Sunset

6:41 PM

Moon Phase

Waning Gibbous

97% illuminated

Lake Conditions OutlookCheck the forecast before you goCalm winds · Low rain chance

Barometric pressure: Weather data by Open-Meteo.com

Hourly Forecast

  • 3 AM

    54°

    5 mph

    NE

  • 4 AM

    53°

    6 mph

    E

  • 5 AM

    52°

    6 mph

    E

  • 6 AM

    52°

    6 mph

    E

  • 7 AM

    51°

    6 mph

    E

  • 8 AM

    50°

    5 mph

    E

  • 9 AM

    52°

    6 mph

    E

  • 10 AM

    55°

    5 mph

    E

  • 11 AM

    58°

    5 mph

    E

  • 12 PM

    62°

    5 mph

    SE

  • 1 PM

    65°

    5 mph

    SE

  • 2 PM

    68°

    5 mph

    SE

7-Day Forecast

  • Tuesday

    Partly Sunny

    71°/54°

  • Wednesday

    Partly Sunny

    73°/55°

  • Thursday

    Sunny

    75°/57°

  • Friday

    Partly Sunny

    74°/56°

  • Saturday

    Slight Chance Light Rain

    72°/58°

  • Sunday

    Chance Light Rain

    70°/58°

  • Monday

    Chance Light Rain

    69°/—

Official NWS forecast →

Radar

LightHeavy

Loading radar

Radar via RainViewer · refreshed every 10 minutes

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