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As of 07:02 EDT

Weather in St. Marys, PA

64°Current weather

St. Marys, Sunday, 9 August, 07:02

Mostly clear. Feels like 65°. High 83°, low 64°.

Pressure30.00 inHg
Wind3 mph W
Humidity98%
Visibility6.2 mi
Dew point64°
Mon, 1081° / 63°0.18Rain
81 °Rain

St. Marys, Monday, 10 August

Rain. High 81°, low 63°.

Pressure30.00 inHg
Wind8.2 mph SW
Humidity89%
Visibility6.2 mi
Dew point65°
Tue, 1183° / 61°0.42Heavy rain
83 °Heavy rain

St. Marys, Tuesday, 11 August

Heavy rain. High 83°, low 61°.

Pressure29.97 inHg
Wind8 mph W
Humidity86%
Visibility6.2 mi
Dew point66°
Wed, 1280° / 62°0.01Light rain
80 °Light rain

St. Marys, Wednesday, 12 August

Light rain. High 80°, low 62°.

Pressure29.80 inHg
Wind7.8 mph W
Humidity87%
Visibility6.2 mi
Dew point65°
Thu, 1372° / 56°0.09Light rain
72 °Light rain

St. Marys, Thursday, 13 August

Light rain. High 72°, low 56°.

Pressure29.88 inHg
Wind14.4 mph NW
Humidity37%
Visibility—
Dew point43°
Fri, 1470° / 47°0Clear
70 °Clear

St. Marys, Friday, 14 August

Clear. High 70°, low 47°.

Pressure30.06 inHg
Wind11 mph NW
Humidity37%
Visibility—
Dew point40°
Sat, 1570° / 45°0Partly cloudy
70 °Partly cloudy

St. Marys, Saturday, 15 August

Partly cloudy. High 70°, low 45°.

Pressure30.21 inHg
Wind10.2 mph N
Humidity39%
Visibility—
Dew point42°
Sun, 1674° / 48°0Overcast
74 °Overcast

St. Marys, Sunday, 16 August

Overcast. High 74°, low 48°.

Pressure30.15 inHg
Wind3.3 mph SW
Humidity36%
Visibility—
Dew point43°
Mon, 1778° / 51°0Mostly clear
78 °Mostly clear

St. Marys, Monday, 17 August

Mostly clear. High 78°, low 51°.

Pressure30.00 inHg
Wind8.6 mph NW
Humidity36%
Visibility—
Dew point46°
Tue, 1880° / 55°0Partly cloudy
80 °Partly cloudy

St. Marys, Tuesday, 18 August

Partly cloudy. High 80°, low 55°.

Pressure30.03 inHg
Wind5.4 mph NE
Humidity39%
Visibility—
Dew point50°
Wed, 1981° / 56°0Partly cloudy
81 °Partly cloudy

St. Marys, Wednesday, 19 August

Partly cloudy. High 81°, low 56°.

Pressure30.06 inHg
Wind4.4 mph SW
Humidity37%
Visibility—
Dew point50°
Thu, 2086° / 58°0Partly cloudy
86 °Partly cloudy

St. Marys, Thursday, 20 August

Partly cloudy. High 86°, low 58°.

Pressure29.97 inHg
Wind7.8 mph SW
Humidity39%
Visibility—
Dew point55°
Fri, 2192° / 66°0.02Light rain
92 °Light rain

St. Marys, Friday, 21 August

Light rain. High 92°, low 66°.

Pressure29.83 inHg
Wind6.7 mph W
Humidity57%
Visibility—
Dew point68°
Sat, 2287° / 61°0Clear
87 °Clear

St. Marys, Saturday, 22 August

Clear. High 87°, low 61°.

Pressure29.97 inHg
Wind5.1 mph NW
Humidity31%
Visibility—
Dew point49°
Sun, 2390° / 62°0Overcast
90 °Overcast

St. Marys, Sunday, 23 August

Overcast. High 90°, low 62°.

Pressure29.94 inHg
Wind5.2 mph W
Humidity36%
Visibility—
Dew point57°
Mon, 2491° / 67°0.43Rain
91 °Rain

St. Marys, Monday, 24 August

Rain. High 91°, low 67°.

Pressure29.94 inHg
Wind9.1 mph N
Humidity50%
Visibility—
Dew point67°

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, PA 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, PA 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.