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As of 18:20 EDT

Weather in Jefferson, PA

83°Current weather

Jefferson, Saturday, 8 August, 18:20

Overcast. Feels like 89°. High 84°, low 69°.

Pressure29.97 inHg
Wind5.6 mph S
Humidity75%
Visibility6.2 mi
Dew point74°
Sun, 0986° / 69°0Partly cloudy
86 °Partly cloudy

Jefferson, Sunday, 9 August

Partly cloudy. High 86°, low 69°.

Pressure30.03 inHg
Wind8.3 mph NW
Humidity48%
Visibility6.2 mi
Dew point65°
Mon, 1089° / 69°0.32Rain
89 °Rain

Jefferson, Monday, 10 August

Rain. High 89°, low 69°.

Pressure30.03 inHg
Wind9 mph NW
Humidity65%
Visibility6.2 mi
Dew point67°
Tue, 1187° / 67°0.15Rain
87 °Rain

Jefferson, Tuesday, 11 August

Rain. High 87°, low 67°.

Pressure29.94 inHg
Wind9 mph W
Humidity61%
Visibility6.2 mi
Dew point65°
Wed, 1279° / 66°0.32Rain
79 °Rain

Jefferson, Wednesday, 12 August

Rain. High 79°, low 66°.

Pressure29.83 inHg
Wind9.4 mph NW
Humidity73%
Visibility6.2 mi
Dew point68°
Thu, 1386° / 67°0Partly cloudy
86 °Partly cloudy

Jefferson, Thursday, 13 August

Partly cloudy. High 86°, low 67°.

Pressure29.80 inHg
Wind14.7 mph NW
Humidity44%
Visibility—
Dew point59°
Fri, 1476° / 58°0.03Light rain
76 °Light rain

Jefferson, Friday, 14 August

Light rain. High 76°, low 58°.

Pressure30.00 inHg
Wind12.3 mph N
Humidity43%
Visibility—
Dew point49°
Sat, 1575° / 52°0Clear
75 °Clear

Jefferson, Saturday, 15 August

Clear. High 75°, low 52°.

Pressure30.21 inHg
Wind8.9 mph NW
Humidity40%
Visibility—
Dew point46°
Sun, 1675° / 53°0Clear
75 °Clear

Jefferson, Sunday, 16 August

Clear. High 75°, low 53°.

Pressure30.30 inHg
Wind7.1 mph N
Humidity39%
Visibility—
Dew point46°
Mon, 1783° / 57°0Partly cloudy
83 °Partly cloudy

Jefferson, Monday, 17 August

Partly cloudy. High 83°, low 57°.

Pressure30.12 inHg
Wind10.8 mph SE
Humidity51%
Visibility—
Dew point59°
Tue, 1872° / 65°0.19Light rain
72 °Light rain

Jefferson, Tuesday, 18 August

Light rain. High 72°, low 65°.

Pressure29.97 inHg
Wind6.4 mph SW
Humidity95%
Visibility—
Dew point67°
Wed, 1981° / 64°0.01Light rain
81 °Light rain

Jefferson, Wednesday, 19 August

Light rain. High 81°, low 64°.

Pressure29.91 inHg
Wind11.5 mph N
Humidity44%
Visibility—
Dew point55°
Thu, 2073° / 58°0.01Light rain
73 °Light rain

Jefferson, Thursday, 20 August

Light rain. High 73°, low 58°.

Pressure30.00 inHg
Wind6.4 mph E
Humidity55%
Visibility—
Dew point52°
Fri, 2171° / 61°0.33Light rain
71 °Light rain

Jefferson, Friday, 21 August

Light rain. High 71°, low 61°.

Pressure29.85 inHg
Wind8.4 mph S
Humidity96%
Visibility—
Dew point69°
Sat, 2283° / 66°0.01Light rain
83 °Light rain

Jefferson, Saturday, 22 August

Light rain. High 83°, low 66°.

Pressure29.77 inHg
Wind11.5 mph NW
Humidity42%
Visibility—
Dew point55°
Sun, 2373° / 56°0Clear
73 °Clear

Jefferson, Sunday, 23 August

Clear. High 73°, low 56°.

Pressure30.06 inHg
Wind16.3 mph N
Humidity33%
Visibility—
Dew point38°

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 Jefferson, 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 Jefferson, 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.