Saint Marys, OH Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Saint Marys, OH in one place.
Showers and thunderstorms. Mostly cloudy, with a high near 75. Southwest wind 12 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Saint Marys, OH is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 15, 2026 1:54 PM EDT.
The active forecast window currently covers Apr 16 to Apr 21, 2026 for Saint Marys, OH.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 16 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 1:54 PM EDT
- Forecast office
- ILN
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Marys
Friday looks like the warmest upcoming period in Saint Marys at 78 degrees F.
Sunday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Sunday at about 12 to 20 mph W.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 1:54 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- ILN
- Radar station
- KILN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms before 2am. Mostly cloudy, with a low around 56. West wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 78. Southwest wind around 6 mph.
A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms before 8am, then showers and thunderstorms. Mostly cloudy, with a high near 75. Chance of precipitation is 80%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
A chance of rain showers before 2pm. Mostly sunny, with a high near 53. Chance of precipitation is 30%.
Partly cloudy, with a low around 33.
Sunny, with a high near 57.
Mostly clear, with a low around 41.
Mostly sunny, with a high near 72.
Partly cloudy, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 16
|
Showers And Thunderstorms
|
75°F |
12 to 17 mph
SW
|
|
Thursday Night
Apr 16
|
Showers And Thunderstorms
|
56°F |
5 to 15 mph
W
|
|
Friday
Apr 17
|
Mostly Sunny
|
78°F |
6 mph
SW
|
|
Friday Night
Apr 17
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
63°F |
6 to 10 mph
S
|
|
Saturday
Apr 18
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
75°F |
10 to 18 mph
SW
|
|
Saturday Night
Apr 18
|
Showers And Thunderstorms Likely
|
40°F |
12 to 17 mph
W
|
|
Sunday
Apr 19
|
Chance Rain Showers
|
53°F |
12 to 20 mph
W
|
|
Sunday Night
Apr 19
|
Partly Cloudy
|
33°F |
6 to 17 mph
W
|
|
Monday
Apr 20
|
Sunny
|
57°F |
6 to 9 mph
W
|
|
Monday Night
Apr 20
|
Mostly Clear
|
41°F |
7 mph
SW
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
72°F |
8 to 15 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
52°F |
8 to 14 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Saint Marys.
