Live Weather & Forecast
Weather in Saint Marys
Ohio, United States · Real-time conditions & 3-day outlook
19°C
Feels like 19°C
67°F / Feels 67°F
Clear
Saint Marys, Ohio
🌞 Daytime
Updated: 2026-04-13 07:30
Humidity
63%
Wind
31.7 km/h SW
Wind Gust
48.4 km/h
Pressure
1015 mb
Visibility
16 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
25%
Dew Point
12.7°C
Wind Degree
230°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
151.9 μg/m³
NO₂
4.3 μg/m³
O₃
76 μg/m³
SO₂
3.8 μg/m³
PM 2.5
5.6 μg/m³
PM 10
5.8 μg/m³
Weather Alerts 2
Met
· Moderate · Expected
Special Weather Statement issued April 13 at 2:09AM EDT by NWS Indianapolis IN
Scattered showers will continue to produce brief strong wind gusts of 40 to just above 50 mph through 4 am as they move east across central Indiana. An isolated higher gust in excess of 55 mph is possible. These wind gusts may knock down tree limbs and power lines.
Met
· Moderate · Expected
Special Weather Statement issued April 12 at 10:13PM EDT by NWS Indianapolis IN
Scattered showers and possibly a thunderstorm are expected tonight. Though much of the shower activity will be light, conditions favor strong wind gusts associated with any shower or storm. Observations upstream across Illinois have shown wind gusts between 40 to 50 mph as of 10pm. Similar wind gusts are possible across central Indiana through tonight.
Today's Hourly Forecast
24-hour breakdown for Saint Marys, Ohio
12 AM
21°
Clear
1 AM
21°
Patchy rain nearby
2 AM
20°
Patchy rain nearby
3 AM
20°
Patchy rain nearby
4 AM
19°
Patchy rain nearby
5 AM
19°
Patchy rain nearby
6 AM
19°
Patchy rain nearby
7 AM
19°
Clear
8 AM
19°
Patchy rain nearby
9 AM
20°
Patchy rain nearby
10 AM
20°
Cloudy
11 AM
21°
Cloudy
12 PM
22°
Patchy light drizzle
1 PM
23°
Overcast
2 PM
24°
Partly Cloudy
3 PM
26°
Sunny
4 PM
27°
Sunny
5 PM
27°
Sunny
6 PM
27°
Sunny
7 PM
24°
Sunny
8 PM
22°
Partly Cloudy
9 PM
21°
Thundery outbreaks in nearby
10 PM
20°
Thundery outbreaks in nearby
11 PM
20°
Cloudy
3-Day Forecast
Daily overview for Saint Marys, Ohio
Today
Patchy rain nearby
29°
/
18°
🌧️ 88% chance of rain
💧 Avg. humidity: 68%
💨 Max wind: 43.6 km/h
🌧️ Total precip: 1.56 mm
☀️ UV Index: 1
🌅 Sunrise: 07:02 AM
🌇 Sunset: 08:15 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Patchy rain nearby
26°
/
19°
🌧️ 79% chance of rain
💧 Avg. humidity: 80%
💨 Max wind: 32 km/h
🌧️ Total precip: 0.34 mm
☀️ UV Index: 1.5
🌅 Sunrise: 07:00 AM
🌇 Sunset: 08:16 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Moderate rain
24°
/
18°
🌧️ 76% chance of rain
💧 Avg. humidity: 80%
💨 Max wind: 32 km/h
🌧️ Total precip: 7.41 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:59 AM
🌇 Sunset: 08:17 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Best Time to Visit Saint Marys
Plan your trip to Saint Marys, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Saint Marys?
Current conditions in Saint Marys: Clear, temperature 19°C, humidity 63%.
What is the best time to visit Saint Marys?
The best time to visit Saint Marys is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Saint Marys?
Saint Marys is located at approximately 40.5° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Saint Marys?
The wettest period in Saint Marys is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Saint Marys?
For visits to Saint Marys during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Saint Marys in?
Saint Marys is located in United States, in the state of Ohio.
What are the public holidays in Saint Marys in 2026?
View the 2026 public holidays for Saint Marys on our Holidays page.
What are the GPS coordinates used for the weather forecast in Saint Marys?
The weather forecast for Saint Marys uses coordinates 40.5423, -84.3894.