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As of 17:33 EDT

Weather in Cornwall, PA

81°Current weather

Cornwall, Saturday, 8 August, 17:33

Overcast. Feels like 85°. High 84°, low 70°.

Pressure29.94 inHg
Wind4 mph SW
Humidity75%
Visibility6.2 mi
Dew point72°
Sun, 0986° / 70°0Clear
86 °Clear

Cornwall, Sunday, 9 August

Clear. High 86°, low 70°.

Pressure30.00 inHg
Wind8.4 mph W
Humidity57%
Visibility6.2 mi
Dew point68°
Mon, 1086° / 69°0.22Rain
86 °Rain

Cornwall, Monday, 10 August

Rain. High 86°, low 69°.

Pressure30.03 inHg
Wind8.9 mph W
Humidity74%
Visibility6.2 mi
Dew point69°
Tue, 1186° / 67°0.38Rain
86 °Rain

Cornwall, Tuesday, 11 August

Rain. High 86°, low 67°.

Pressure29.94 inHg
Wind7.6 mph W
Humidity69%
Visibility6.2 mi
Dew point68°
Wed, 1281° / 68°0.19Light rain
81 °Light rain

Cornwall, Wednesday, 12 August

Light rain. High 81°, low 68°.

Pressure29.80 inHg
Wind10.3 mph W
Humidity86%
Visibility6.2 mi
Dew point68°
Thu, 1383° / 64°0.01Light rain
83 °Light rain

Cornwall, Thursday, 13 August

Light rain. High 83°, low 64°.

Pressure29.77 inHg
Wind14.5 mph NW
Humidity55%
Visibility—
Dew point64°
Fri, 1475° / 59°0Light rain
75 °Light rain

Cornwall, Friday, 14 August

Light rain. High 75°, low 59°.

Pressure30.00 inHg
Wind12 mph N
Humidity45%
Visibility—
Dew point49°
Sat, 1575° / 52°0Clear
75 °Clear

Cornwall, Saturday, 15 August

Clear. High 75°, low 52°.

Pressure30.21 inHg
Wind10 mph N
Humidity44%
Visibility—
Dew point47°
Sun, 1675° / 52°0Clear
75 °Clear

Cornwall, Sunday, 16 August

Clear. High 75°, low 52°.

Pressure30.30 inHg
Wind6.6 mph NE
Humidity44%
Visibility—
Dew point49°
Mon, 1778° / 55°0Overcast
78 °Overcast

Cornwall, Monday, 17 August

Overcast. High 78°, low 55°.

Pressure30.12 inHg
Wind11.6 mph SE
Humidity60%
Visibility—
Dew point61°
Tue, 1874° / 65°0.09Light rain
74 °Light rain

Cornwall, Tuesday, 18 August

Light rain. High 74°, low 65°.

Pressure29.97 inHg
Wind7.6 mph SW
Humidity87%
Visibility—
Dew point66°
Wed, 1981° / 63°0Partly cloudy
81 °Partly cloudy

Cornwall, Wednesday, 19 August

Partly cloudy. High 81°, low 63°.

Pressure29.88 inHg
Wind11.6 mph N
Humidity47%
Visibility—
Dew point57°
Thu, 2068° / 57°0Overcast
68 °Overcast

Cornwall, Thursday, 20 August

Overcast. High 68°, low 57°.

Pressure30.00 inHg
Wind4.3 mph NW
Humidity71%
Visibility—
Dew point56°
Fri, 2170° / 60°0.6Rain
70 °Rain

Cornwall, Friday, 21 August

Rain. High 70°, low 60°.

Pressure29.88 inHg
Wind7.2 mph SE
Humidity98%
Visibility—
Dew point68°
Sat, 2282° / 66°0Mostly clear
82 °Mostly clear

Cornwall, Saturday, 22 August

Mostly clear. High 82°, low 66°.

Pressure29.77 inHg
Wind10.4 mph W
Humidity50%
Visibility—
Dew point59°
Sun, 2371° / 56°0Clear
71 °Clear

Cornwall, Sunday, 23 August

Clear. High 71°, low 56°.

Pressure30.03 inHg
Wind17.9 mph NW
Humidity41%
Visibility—
Dew point43°

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 Cornwall, 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 Cornwall, 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.