EN
English Español

As of 03:27 EDT

Weather in Jefferson, NJ

69°Current weather

Jefferson, Sunday, 9 August, 03:27

Clear. Feels like 70°. High 83°, low 69°.

Pressure29.94 inHg
Wind3.9 mph W
Humidity94%
Visibility6.2 mi
Dew point67°
Mon, 1083° / 67°0Overcast
83 °Overcast

Jefferson, Monday, 10 August

Overcast. High 83°, low 67°.

Pressure29.97 inHg
Wind6.9 mph SW
Humidity46%
Visibility6.2 mi
Dew point61°
Tue, 1184° / 65°0.3Rain
84 °Rain

Jefferson, Tuesday, 11 August

Rain. High 84°, low 65°.

Pressure29.85 inHg
Wind11 mph NW
Humidity45%
Visibility6.2 mi
Dew point58°
Wed, 1278° / 63°0.01Light rain
78 °Light rain

Jefferson, Wednesday, 12 August

Light rain. High 78°, low 63°.

Pressure29.74 inHg
Wind2.3 mph S
Humidity53%
Visibility6.2 mi
Dew point60°
Thu, 1378° / 59°0.07Light rain
78 °Light rain

Jefferson, Thursday, 13 August

Light rain. High 78°, low 59°.

Pressure29.74 inHg
Wind12.4 mph NW
Humidity36%
Visibility—
Dew point47°
Fri, 1472° / 53°0Clear
72 °Clear

Jefferson, Friday, 14 August

Clear. High 72°, low 53°.

Pressure29.97 inHg
Wind12.8 mph NW
Humidity35%
Visibility—
Dew point41°
Sat, 1573° / 50°0Clear
73 °Clear

Jefferson, Saturday, 15 August

Clear. High 73°, low 50°.

Pressure30.09 inHg
Wind14.5 mph NW
Humidity35%
Visibility—
Dew point41°
Sun, 1676° / 50°0Overcast
76 °Overcast

Jefferson, Sunday, 16 August

Overcast. High 76°, low 50°.

Pressure30.12 inHg
Wind7 mph N
Humidity30%
Visibility—
Dew point40°
Mon, 1775° / 55°0.01Light rain
75 °Light rain

Jefferson, Monday, 17 August

Light rain. High 75°, low 55°.

Pressure30.00 inHg
Wind4.3 mph SW
Humidity39%
Visibility—
Dew point47°
Tue, 1882° / 56°0Light rain
82 °Light rain

Jefferson, Tuesday, 18 August

Light rain. High 82°, low 56°.

Pressure30.00 inHg
Wind3.9 mph N
Humidity40%
Visibility—
Dew point53°
Wed, 1983° / 61°0Overcast
83 °Overcast

Jefferson, Wednesday, 19 August

Overcast. High 83°, low 61°.

Pressure30.06 inHg
Wind4.5 mph SE
Humidity40%
Visibility—
Dew point54°
Thu, 2086° / 61°0Mostly clear
86 °Mostly clear

Jefferson, Thursday, 20 August

Mostly clear. High 86°, low 61°.

Pressure30.03 inHg
Wind5.5 mph SE
Humidity37%
Visibility—
Dew point54°
Fri, 2188° / 65°0.12Light rain
88 °Light rain

Jefferson, Friday, 21 August

Light rain. High 88°, low 65°.

Pressure29.85 inHg
Wind10.5 mph SW
Humidity48%
Visibility—
Dew point64°
Sat, 2287° / 67°0Mostly clear
87 °Mostly clear

Jefferson, Saturday, 22 August

Mostly clear. High 87°, low 67°.

Pressure29.88 inHg
Wind8.3 mph NW
Humidity35%
Visibility—
Dew point54°
Sun, 2390° / 63°0Clear
90 °Clear

Jefferson, Sunday, 23 August

Clear. High 90°, low 63°.

Pressure29.94 inHg
Wind5.3 mph W
Humidity31%
Visibility—
Dew point52°
Mon, 2488° / 67°0.22Rain
88 °Rain

Jefferson, Monday, 24 August

Rain. High 88°, low 67°.

Pressure29.94 inHg
Wind7.4 mph NE
Humidity53%
Visibility—
Dew point65°

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, NJ 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, NJ 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.