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As of 12:05 EDT

Weather in Lake Hopatcong, NJ

83°Current weather

Lake Hopatcong, Sunday, 9 August, 12:05

Partly cloudy. Feels like 88°. High 83°, low 69°.

Pressure29.97 inHg
Wind3 mph W
Humidity70%
Visibility6.2 mi
Dew point71°
Mon, 1083° / 67°0.03Light rain
83 °Light rain

Lake Hopatcong, Monday, 10 August

Light rain. High 83°, low 67°.

Pressure29.97 inHg
Wind7.2 mph W
Humidity43%
Visibility6.2 mi
Dew point60°
Tue, 1186° / 66°0.06Light rain
86 °Light rain

Lake Hopatcong, Tuesday, 11 August

Light rain. High 86°, low 66°.

Pressure29.85 inHg
Wind9.6 mph NW
Humidity50%
Visibility6.2 mi
Dew point62°
Wed, 1280° / 61°0.03Light rain
80 °Light rain

Lake Hopatcong, Wednesday, 12 August

Light rain. High 80°, low 61°.

Pressure29.83 inHg
Wind3.9 mph W
Humidity52%
Visibility6.2 mi
Dew point58°
Thu, 1380° / 60°0.05Light rain
80 °Light rain

Lake Hopatcong, Thursday, 13 August

Light rain. High 80°, low 60°.

Pressure29.77 inHg
Wind13.1 mph NW
Humidity46%
Visibility6.2 mi
Dew point58°
Fri, 1475° / 53°0Mostly clear
75 °Mostly clear

Lake Hopatcong, Friday, 14 August

Mostly clear. High 75°, low 53°.

Pressure30.00 inHg
Wind9.4 mph NW
Humidity34%
Visibility—
Dew point43°
Sat, 1573° / 51°0Clear
73 °Clear

Lake Hopatcong, Saturday, 15 August

Clear. High 73°, low 51°.

Pressure30.15 inHg
Wind12.1 mph N
Humidity35%
Visibility—
Dew point41°
Sun, 1674° / 52°0Overcast
74 °Overcast

Lake Hopatcong, Sunday, 16 August

Overcast. High 74°, low 52°.

Pressure30.18 inHg
Wind4.4 mph N
Humidity39%
Visibility—
Dew point46°
Mon, 1763° / 57°0.11Light rain
63 °Light rain

Lake Hopatcong, Monday, 17 August

Light rain. High 63°, low 57°.

Pressure29.91 inHg
Wind7.7 mph N
Humidity99%
Visibility—
Dew point62°
Tue, 1880° / 54°0Overcast
80 °Overcast

Lake Hopatcong, Tuesday, 18 August

Overcast. High 80°, low 54°.

Pressure29.94 inHg
Wind7.8 mph N
Humidity38%
Visibility—
Dew point48°
Wed, 1981° / 59°0.04Light rain
81 °Light rain

Lake Hopatcong, Wednesday, 19 August

Light rain. High 81°, low 59°.

Pressure29.85 inHg
Wind9.8 mph SE
Humidity42%
Visibility—
Dew point54°
Thu, 2081° / 59°0.06Light rain
81 °Light rain

Lake Hopatcong, Thursday, 20 August

Light rain. High 81°, low 59°.

Pressure29.71 inHg
Wind10.9 mph N
Humidity49%
Visibility—
Dew point58°
Fri, 2179° / 53°0Clear
79 °Clear

Lake Hopatcong, Friday, 21 August

Clear. High 79°, low 53°.

Pressure29.85 inHg
Wind6.2 mph NW
Humidity34%
Visibility—
Dew point46°
Sat, 2284° / 56°0Clear
84 °Clear

Lake Hopatcong, Saturday, 22 August

Clear. High 84°, low 56°.

Pressure29.94 inHg
Wind11.2 mph S
Humidity41%
Visibility—
Dew point55°
Sun, 2381° / 63°0.14Light rain
81 °Light rain

Lake Hopatcong, Sunday, 23 August

Light rain. High 81°, low 63°.

Pressure29.85 inHg
Wind15.5 mph W
Humidity42%
Visibility—
Dew point55°
Mon, 2475° / 53°0Clear
75 °Clear

Lake Hopatcong, Monday, 24 August

Clear. High 75°, low 53°.

Pressure30.15 inHg
Wind6.5 mph NW
Humidity33%
Visibility—
Dew point42°

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 Lake Hopatcong, 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 Lake Hopatcong, 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.