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As of 15:21 EDT

Weather in Big Run, PA

80°Current weather

Big Run, Saturday, 8 August, 15:21

Overcast. Feels like 80°. High 81°, low 67°.

Pressure30.03 inHg
Wind9.9 mph W
Humidity79%
Visibility6.2 mi
Dew point72°
Sun, 0984° / 67°0Mostly clear
84 °Mostly clear

Big Run, Sunday, 9 August

Mostly clear. High 84°, low 67°.

Pressure30.06 inHg
Wind7 mph W
Humidity49%
Visibility6.2 mi
Dew point59°
Mon, 1085° / 65°0.32Rain
85 °Rain

Big Run, Monday, 10 August

Rain. High 85°, low 65°.

Pressure30.03 inHg
Wind6.3 mph SW
Humidity98%
Visibility6.2 mi
Dew point68°
Tue, 1178° / 64°0.42Rain
78 °Rain

Big Run, Tuesday, 11 August

Rain. High 78°, low 64°.

Pressure29.97 inHg
Wind8.4 mph W
Humidity75%
Visibility6.2 mi
Dew point66°
Wed, 1274° / 64°0.13Light rain
74 °Light rain

Big Run, Wednesday, 12 August

Light rain. High 74°, low 64°.

Pressure29.83 inHg
Wind4.6 mph W
Humidity95%
Visibility5.5 mi
Dew point67°
Thu, 1371° / 61°0.07Light rain
71 °Light rain

Big Run, Thursday, 13 August

Light rain. High 71°, low 61°.

Pressure29.91 inHg
Wind9.1 mph W
Humidity77%
Visibility—
Dew point58°
Fri, 1473° / 50°0Clear
73 °Clear

Big Run, Friday, 14 August

Clear. High 73°, low 50°.

Pressure30.00 inHg
Wind9.5 mph NW
Humidity39%
Visibility—
Dew point44°
Sat, 1572° / 48°0Clear
72 °Clear

Big Run, Saturday, 15 August

Clear. High 72°, low 48°.

Pressure30.24 inHg
Wind10 mph NW
Humidity38%
Visibility—
Dew point43°
Sun, 1677° / 50°0Mostly clear
77 °Mostly clear

Big Run, Sunday, 16 August

Mostly clear. High 77°, low 50°.

Pressure30.30 inHg
Wind3.2 mph SE
Humidity36%
Visibility—
Dew point46°
Mon, 1778° / 55°0Overcast
78 °Overcast

Big Run, Monday, 17 August

Overcast. High 78°, low 55°.

Pressure30.12 inHg
Wind6.6 mph SW
Humidity44%
Visibility—
Dew point51°
Tue, 1874° / 62°0.05Light rain
74 °Light rain

Big Run, Tuesday, 18 August

Light rain. High 74°, low 62°.

Pressure29.97 inHg
Wind5.7 mph W
Humidity87%
Visibility—
Dew point64°
Wed, 1975° / 58°0Overcast
75 °Overcast

Big Run, Wednesday, 19 August

Overcast. High 75°, low 58°.

Pressure29.97 inHg
Wind6.8 mph NW
Humidity52%
Visibility—
Dew point53°
Thu, 2071° / 58°0.11Light rain
71 °Light rain

Big Run, Thursday, 20 August

Light rain. High 71°, low 58°.

Pressure30.00 inHg
Wind5.8 mph E
Humidity83%
Visibility—
Dew point55°
Fri, 2174° / 61°0.39Light rain
74 °Light rain

Big Run, Friday, 21 August

Light rain. High 74°, low 61°.

Pressure29.83 inHg
Wind5.5 mph W
Humidity90%
Visibility—
Dew point69°
Sat, 2277° / 55°0.05Light rain
77 °Light rain

Big Run, Saturday, 22 August

Light rain. High 77°, low 55°.

Pressure29.83 inHg
Wind8.5 mph W
Humidity45%
Visibility—
Dew point52°
Sun, 2369° / 48°0Clear
69 °Clear

Big Run, Sunday, 23 August

Clear. High 69°, low 48°.

Pressure30.09 inHg
Wind8.4 mph NW
Humidity38%
Visibility—
Dew point39°

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 Big Run, 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 Big Run, 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.