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Saint Marys, OH Weather
Current conditions
Observed at Lima, Lima Allen County Airport · 40 min ago
Forecast
10-day-
Sunday
Sunny, with a high near 72.
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Sunday Night
Partly cloudy, with a low around 45.
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Monday
Mostly sunny, with a high near 72.
National Weather Service forecast updated 2 days ago.
Hourly
Hourly forecast- Now47°
- 10 AM53°
- 11 AM59°
- 12 PM62°
- 1 PM66°
- 2 PM70°
- 3 PM70°
- 4 PM71°
- 5 PM71°
- 6 PM68°
- 7 PM65°
- 8 PM61°
- 9 PM58°
- 10 PM55°
- 11 PM53°
- Mon12 AM52°
- 1 AM51°
- 2 AM50°
- 3 AM49°
- 4 AM48°
- 5 AM47°
- 6 AM46°
- 7 AM45°
- 8 AM45°
10-day forecast
Details- TonightOct 22Clear45°
- FriOct 23Sunny44°69°
- SatOct 24Mostly Sunny42°69°
- TodayOct 25Sunny45°72°
- MonOct 26Mostly Sunny47°72°
- TueOct 27Partly Sunny45°68°
- WedOct 28Partly Sunny47°69°
- ThuOct 29Mostly Sunny71°
- FriOct 30Cloudy41°56°
- SatOct 31Cloudy0.07 in37°60°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news in Ohio
More weather news-
Northeast Ohio weather: Dry stretch continues this weekendCLEVELAND, Ohio (WOIO) - High pressure keeps dry weather around through the weekend and beyond. High temperatures rise to the mid 60s this afternoon under a sunny sky. Low temperatures drop to the upper 30s and low 40s…
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Sunny and pleasant weekend ahead for the Mid-Ohio ValleyThe dry and comfortable weather will continue through much of next week. PARKERSBURG, W.Va. (WTAP) - The weather remains quiet across the Mid-Ohio Valley. No rain is expected over the next several days, but there will…
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Northeast Ohio Weather: Pleasant weekend aheadCleveland 19 News CLEVELAND, Ohio (WOIO) - High pressure remains over the area today. It will shift east of Ohio by Sunday. Sunny today. High temperatures in the lower to middle 60s. Clear tonight. Early morning…
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Ohio Department of Transportation preparing snow and ice equipment for winterGALLIPOLIS, Ohio (WCHS) — Temperatures are expected to cool down even more as winter weather is just around the corner. The Ohio Department of Transportation is making sure it's ready to clear roads when snow and ice…
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Ohio Ag Weather and Forecast, October 23, 2026We probably should have just hit "cut and paste" for this entire week for weather. But, this pattern shows no sign of ending nearby. In fact, we still look completely dry with sunny, warm afternoons. We probably should…
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The trend of sunny days continues across the Mid-Ohio ValleyThe weather remains quiet across the Mid-Ohio Valley. PARKERSBURG, W.Va. (WTAP) - The weather remains persistent across the Mid-Ohio Valley. High pressure remains the dominant force in the forecast for the next several…
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Northeast Ohio Weather: Dry spell rolls onCleveland 19 News CLEVELAND, Ohio (WOIO) - High pressure is centered west of our area today. A weak front crosses tonight. Little change to the forecast the next few days. Sunshine today. Afternoon temperatures in the…
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Ohio Ag Weather and Forecast, October 22, 2026October 22, 2026 -- This forecast is clearly back loaded with mositure, leading to trouble free weather for harvest today through at least next Thursday morning. Temps remain above normal, with the warmest coming today…
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Northeast Ohio Weather: Dry spell to continueCleveland 19 News Northeast Ohio Weather: Dry spell to continue Northeast Ohio Weather: Sunny today; dry spell continues
Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Lima, OH reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Nearby
- Lima 33 km
- Troy 58 km
- Sidney 35 km
- Piqua 46 km
- Bellefontaine 57 km
- Greenville 53 km
- Van Wert 40 km
- Celina 15 km
- Wapakoneta 17 km
- Decatur 56 km
- Delphos 34 km
- Portland 51 km
Forecasters' discussion
From the National Weather Service office in ILN, issued 3 hrs ago
What Has Changed
No significant changes.
Key Messages
1) Dry conditions will continue through the week.
Discussion
KEY MESSAGE 1) Anomalous mid level ridge extending from the lower Mississippi Valley into the Great Lakes will gradually lose amplitude during the early part of the week as several pieces of energy lift out of the western US into the Great Lakes. Flow will briefly become zonal mid week with low amplitude ridging returning late in the week. At the surface, a weak front will sag south into the area Monday into Monday night and then wash out by Tuesday night into Wednesday. Otherwise, high pressure will predominate. Low to mid levels will remain dry through the week, so the extended dry period will persist.
Temperatures will remain above normal, but daily diurnal ranges will narrow a bit as lows warm up into the upper 40s to lower 50s by mid week.
Aviation
Visibility restrictions will occur at KLUK again late in the period. Otherwise, just some high clouds passing across the region. Winds will remain light east to southeast.
OUTLOOK...No significant weather expected.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use. How to use Weather