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As of 03:22 EDT

Weather in St. Marys, OH

67°Current weather

St. Marys, Sunday, 9 August, 03:22

Clear. Feels like 68°. High 87°, low 65°.

Pressure30.03 inHg
Wind1 mph SE
Humidity98%
Visibility6.2 mi
Dew point66°
Mon, 1089° / 66°1.15Heavy rain
89 °Heavy rain

St. Marys, Monday, 10 August

Heavy rain. High 89°, low 66°.

Pressure29.97 inHg
Wind17.8 mph SW
Humidity80%
Visibility6.2 mi
Dew point74°
Tue, 1186° / 67°1.74Heavy rain
86 °Heavy rain

St. Marys, Tuesday, 11 August

Heavy rain. High 86°, low 67°.

Pressure29.91 inHg
Wind9.1 mph S
Humidity82%
Visibility6.2 mi
Dew point75°
Wed, 1281° / 66°0.41Rain
81 °Rain

St. Marys, Wednesday, 12 August

Rain. High 81°, low 66°.

Pressure29.80 inHg
Wind3.6 mph N
Humidity80%
Visibility6.2 mi
Dew point72°
Thu, 1374° / 60°0Overcast
74 °Overcast

St. Marys, Thursday, 13 August

Overcast. High 74°, low 60°.

Pressure30.00 inHg
Wind7.6 mph N
Humidity66%
Visibility—
Dew point60°
Fri, 1472° / 57°0.03Light rain
72 °Light rain

St. Marys, Friday, 14 August

Light rain. High 72°, low 57°.

Pressure30.15 inHg
Wind7.6 mph NE
Humidity63%
Visibility—
Dew point56°
Sat, 1573° / 57°0Overcast
73 °Overcast

St. Marys, Saturday, 15 August

Overcast. High 73°, low 57°.

Pressure30.27 inHg
Wind7.6 mph E
Humidity66%
Visibility—
Dew point58°
Sun, 1673° / 58°0.04Light rain
73 °Light rain

St. Marys, Sunday, 16 August

Light rain. High 73°, low 58°.

Pressure30.12 inHg
Wind7.9 mph SE
Humidity74%
Visibility—
Dew point59°
Mon, 1778° / 65°0.02Light rain
78 °Light rain

St. Marys, Monday, 17 August

Light rain. High 78°, low 65°.

Pressure30.06 inHg
Wind7.2 mph NW
Humidity76%
Visibility—
Dew point65°
Tue, 1879° / 61°0.01Light rain
79 °Light rain

St. Marys, Tuesday, 18 August

Light rain. High 79°, low 61°.

Pressure30.06 inHg
Wind3.5 mph W
Humidity63%
Visibility—
Dew point63°
Wed, 1978° / 63°0Overcast
78 °Overcast

St. Marys, Wednesday, 19 August

Overcast. High 78°, low 63°.

Pressure30.00 inHg
Wind10.1 mph S
Humidity73%
Visibility—
Dew point66°
Thu, 2085° / 67°0.06Light rain
85 °Light rain

St. Marys, Thursday, 20 August

Light rain. High 85°, low 67°.

Pressure29.85 inHg
Wind15.4 mph SW
Humidity76%
Visibility—
Dew point74°
Fri, 2189° / 74°0Partly cloudy
89 °Partly cloudy

St. Marys, Friday, 21 August

Partly cloudy. High 89°, low 74°.

Pressure29.85 inHg
Wind8.1 mph E
Humidity65%
Visibility—
Dew point74°
Sat, 2285° / 69°0Partly cloudy
85 °Partly cloudy

St. Marys, Saturday, 22 August

Partly cloudy. High 85°, low 69°.

Pressure29.94 inHg
Wind8.9 mph S
Humidity63%
Visibility—
Dew point68°
Sun, 2390° / 75°0Overcast
90 °Overcast

St. Marys, Sunday, 23 August

Overcast. High 90°, low 75°.

Pressure29.85 inHg
Wind11 mph W
Humidity76%
Visibility—
Dew point76°
Mon, 2483° / 70°0.2Light rain
83 °Light rain

St. Marys, Monday, 24 August

Light rain. High 83°, low 70°.

Pressure30.03 inHg
Wind9.4 mph N
Humidity78%
Visibility—
Dew point72°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for St. Marys, OH are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in St. Marys, OH since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.