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As of 17:38 EDT

Weather in Saint Clair, PA

82°Current weather

Saint Clair, Saturday, 8 August, 17:38

Clear. Feels like 88°. High 83°, low 68°.

Pressure29.97 inHg
Wind8.1 mph W
Humidity77%
Visibility6.2 mi
Dew point74°
Sun, 0984° / 67°0.02Light rain
84 °Light rain

Saint Clair, Sunday, 9 August

Light rain. High 84°, low 67°.

Pressure30.09 inHg
Wind6.7 mph W
Humidity64%
Visibility6.2 mi
Dew point65°
Mon, 1084° / 66°0.63Heavy rain
84 °Heavy rain

Saint Clair, Monday, 10 August

Heavy rain. High 84°, low 66°.

Pressure30.06 inHg
Wind8.2 mph S
Humidity88%
Visibility6.2 mi
Dew point69°
Tue, 1181° / 64°0.52Rain
81 °Rain

Saint Clair, Tuesday, 11 August

Rain. High 81°, low 64°.

Pressure29.97 inHg
Wind10.9 mph W
Humidity74%
Visibility6.2 mi
Dew point68°
Wed, 1271° / 64°0.19Light rain
71 °Light rain

Saint Clair, Wednesday, 12 August

Light rain. High 71°, low 64°.

Pressure29.85 inHg
Wind10.5 mph SW
Humidity94%
Visibility6.2 mi
Dew point68°
Thu, 1372° / 62°0.16Light rain
72 °Light rain

Saint Clair, Thursday, 13 August

Light rain. High 72°, low 62°.

Pressure29.88 inHg
Wind10.7 mph SW
Humidity89%
Visibility—
Dew point68°
Fri, 1472° / 54°0Clear
72 °Clear

Saint Clair, Friday, 14 August

Clear. High 72°, low 54°.

Pressure30.03 inHg
Wind11.1 mph N
Humidity53%
Visibility—
Dew point52°
Sat, 1572° / 50°0Partly cloudy
72 °Partly cloudy

Saint Clair, Saturday, 15 August

Partly cloudy. High 72°, low 50°.

Pressure30.27 inHg
Wind6.4 mph NW
Humidity53%
Visibility—
Dew point50°
Sun, 1676° / 51°0Partly cloudy
76 °Partly cloudy

Saint Clair, Sunday, 16 August

Partly cloudy. High 76°, low 51°.

Pressure30.27 inHg
Wind5 mph E
Humidity47%
Visibility—
Dew point51°
Mon, 1778° / 56°0Overcast
78 °Overcast

Saint Clair, Monday, 17 August

Overcast. High 78°, low 56°.

Pressure30.12 inHg
Wind6.7 mph SW
Humidity56%
Visibility—
Dew point58°
Tue, 1873° / 64°0.27Rain
73 °Rain

Saint Clair, Tuesday, 18 August

Rain. High 73°, low 64°.

Pressure29.97 inHg
Wind4.4 mph SW
Humidity95%
Visibility—
Dew point66°
Wed, 1977° / 60°0Overcast
77 °Overcast

Saint Clair, Wednesday, 19 August

Overcast. High 77°, low 60°.

Pressure29.97 inHg
Wind5.7 mph NW
Humidity57%
Visibility—
Dew point58°
Thu, 2077° / 60°0.14Light rain
77 °Light rain

Saint Clair, Thursday, 20 August

Light rain. High 77°, low 60°.

Pressure29.94 inHg
Wind5 mph NE
Humidity63%
Visibility—
Dew point62°
Fri, 2178° / 64°0.22Light rain
78 °Light rain

Saint Clair, Friday, 21 August

Light rain. High 78°, low 64°.

Pressure29.83 inHg
Wind7.3 mph SW
Humidity78%
Visibility—
Dew point69°
Sat, 2277° / 58°0.04Light rain
77 °Light rain

Saint Clair, Saturday, 22 August

Light rain. High 77°, low 58°.

Pressure29.85 inHg
Wind7.5 mph W
Humidity60%
Visibility—
Dew point60°
Sun, 2369° / 52°0Clear
69 °Clear

Saint Clair, Sunday, 23 August

Clear. High 69°, low 52°.

Pressure30.12 inHg
Wind9.9 mph N
Humidity48%
Visibility—
Dew point44°

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 Saint Clair, 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 Saint Clair, 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.