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As of 20:08 EDT

Weather in Jefferson, PA

78°Current weather

Jefferson, Saturday, 8 August, 20:08

Overcast. Feels like 80°. High 82°, low 67°.

Pressure29.97 inHg
Wind6 mph W
Humidity85%
Visibility6.2 mi
Dew point74°
Sun, 0986° / 66°0Clear
86 °Clear

Jefferson, Sunday, 9 August

Clear. High 86°, low 66°.

Pressure30.06 inHg
Wind5.8 mph W
Humidity51%
Visibility6.2 mi
Dew point59°
Mon, 1085° / 66°0.66Heavy rain
85 °Heavy rain

Jefferson, Monday, 10 August

Heavy rain. High 85°, low 66°.

Pressure30.00 inHg
Wind9.9 mph S
Humidity89%
Visibility6.2 mi
Dew point69°
Tue, 1181° / 64°0.41Rain
81 °Rain

Jefferson, Tuesday, 11 August

Rain. High 81°, low 64°.

Pressure29.97 inHg
Wind9.3 mph W
Humidity73%
Visibility6.2 mi
Dew point68°
Wed, 1273° / 65°0.16Light rain
73 °Light rain

Jefferson, Wednesday, 12 August

Light rain. High 73°, low 65°.

Pressure29.83 inHg
Wind7.1 mph SW
Humidity90%
Visibility6.2 mi
Dew point70°
Thu, 1374° / 62°0.04Light rain
74 °Light rain

Jefferson, Thursday, 13 August

Light rain. High 74°, low 62°.

Pressure29.91 inHg
Wind11.1 mph W
Humidity65%
Visibility—
Dew point58°
Fri, 1470° / 53°0Mostly clear
70 °Mostly clear

Jefferson, Friday, 14 August

Mostly clear. High 70°, low 53°.

Pressure30.06 inHg
Wind10.4 mph NW
Humidity48%
Visibility—
Dew point48°
Sat, 1572° / 49°0Partly cloudy
72 °Partly cloudy

Jefferson, Saturday, 15 August

Partly cloudy. High 72°, low 49°.

Pressure30.27 inHg
Wind10 mph NW
Humidity43%
Visibility—
Dew point45°
Sun, 1676° / 50°0Partly cloudy
76 °Partly cloudy

Jefferson, Sunday, 16 August

Partly cloudy. High 76°, low 50°.

Pressure30.30 inHg
Wind4.9 mph E
Humidity40%
Visibility—
Dew point47°
Mon, 1778° / 54°0Overcast
78 °Overcast

Jefferson, Monday, 17 August

Overcast. High 78°, low 54°.

Pressure30.09 inHg
Wind6 mph SW
Humidity43%
Visibility—
Dew point51°
Tue, 1873° / 61°0.19Light rain
73 °Light rain

Jefferson, Tuesday, 18 August

Light rain. High 73°, low 61°.

Pressure29.97 inHg
Wind4.8 mph NW
Humidity85%
Visibility—
Dew point65°
Wed, 1977° / 56°0Overcast
77 °Overcast

Jefferson, Wednesday, 19 August

Overcast. High 77°, low 56°.

Pressure29.97 inHg
Wind7.8 mph NW
Humidity48%
Visibility—
Dew point53°
Thu, 2076° / 59°0.24Rain
76 °Rain

Jefferson, Thursday, 20 August

Rain. High 76°, low 59°.

Pressure29.94 inHg
Wind6.7 mph E
Humidity55%
Visibility—
Dew point55°
Fri, 2175° / 61°0.28Light rain
75 °Light rain

Jefferson, Friday, 21 August

Light rain. High 75°, low 61°.

Pressure29.85 inHg
Wind6.9 mph NW
Humidity87%
Visibility—
Dew point66°
Sat, 2278° / 55°0.06Light rain
78 °Light rain

Jefferson, Saturday, 22 August

Light rain. High 78°, low 55°.

Pressure29.83 inHg
Wind9.1 mph NW
Humidity51%
Visibility—
Dew point56°
Sun, 2369° / 48°0Clear
69 °Clear

Jefferson, Sunday, 23 August

Clear. High 69°, low 48°.

Pressure30.12 inHg
Wind8.3 mph NW
Humidity42%
Visibility—
Dew point41°

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.