Lake Hopatcong

Lake Hopatcong

Hopatcong, Morris County, NJ
4mi²
285.00ft
Directions
Lake Information

Lake Hopatcong is the largest freshwater body of water in New Jersey, located in Morris County.

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Current Conditions

50°F°
Feels like 46°F°
Clear
Today's High
65°F°
Today's Low
46°F°

Water Temperature

55°F
Updated: (May 8)
Sign in to contribute temps.

Current water temperature for Lake Hopatcong is 55°F.

Current Snapshot

Wind6 mph NNW (Gust 15 mph)
Pressure
29.88 inHg
Visibility10 mi
Humidity93%
Cloud Cover12%

Forecast: Saturday, May 10

Day 1 of 9

Hourly Insights

7 AM
47°F°
10 AM
53°F°
1 PM
61°F°
4 PM
64°F°
7 PM
62°F°

Temperature

High
65°F°
Low
46°F°

Precipitation

Chance15%
Amount0.00"
Typerain

Wind

9mph
Avg Speed
Gusts up to
35mph
CalmModerateStrong
Max Speed16 mph

Sun, Moon & UV

Sunrise9:45 AM
Sunset12:04 AM
Moon PhasewaxingGibbous
Max UV Index8 (Very High)

Solunar Fishing Forecast

Action Rating
3/5

Todays action is rated a 3 (scale is 0 thru 5, 5 is the best)

Major Times (Best)

4:00 AM - 4:00 AM

4:59 PM - 7:29 PM

Minor Times (Good)

9:58 PM - 11:28 PM

8:00 AM - 9:30 AM

Outlook for Saturday at Lake Hopatcong

Expect temperatures ranging from 46°F to 65°F. There's a 15% chance of rain, potentially bringing around 0.00" rain. Winds will be averaging 9 mph, with potential gusts reaching up to 35 mph. The maximum UV index will be 8 (Very High), so plan sun protection accordingly. For anglers, today's fishing action is rated 3/5 (Todays action is rated a 3 (scale is 0 thru 5, 5 is the best)). Look for the best bite times during the major periods around 4:00 AM and 4:59 PM, or try the minor windows near 9:58 PM and 8:00 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Lake Hopatcong.

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May 9th 2025

Lake Information

Elevation
285 ft
Area
4 mi²
Coordinates
40.942, -74.624

Weather Forecast

Saturday

65°F
46°F

Sunday

68°F
50°F

Monday

72°F
46°F

Tuesday

64°F
56°F

Wednesday

63°F
58°F

Thursday

70°F
56°F

Friday

73°F
59°F

Saturday

71°F
59°F

Sunday

65°F
54°F
Saturday - 5/10/2025
65°F
46°F
12am
46°F
55°F
29.92 hPa
4 mph
WNW
G: 16 mph
2am
46°F
55°F
29.89 hPa
6 mph
NW
G: 17 mph
4am
46°F
55°F
29.89 hPa
7 mph
NW
G: 19 mph
6am
47°F
55°F
29.91 hPa
6 mph
NW
G: 18 mph
8am
49°F
55°F
29.95 hPa
14 mph
WNW
G: 35 mph
10am
53°F
55°F
29.95 hPa
15 mph
NW
G: 32 mph
12pm
58°F
55°F
29.96 hPa
15 mph
NW
G: 29 mph
2pm
62°F
55°F
29.98 hPa
14 mph
NW
G: 28 mph
4pm
64°F
55°F
30.00 hPa
13 mph
NW
G: 27 mph
6pm
64°F
55°F
30.02 hPa
9 mph
NW
G: 21 mph
8pm
59°F
55°F
30.07 hPa
5 mph
WNW
G: 12 mph
10pm
55°F
55°F
30.11 hPa
4 mph
WNW
G: 10 mph

Water Temperature History

Trends for Lake Hopatcong

Current Temp

Sign in to view

Latest recorded surface temperature.

Lowest in Period

33°F

On Jan 12

Coldest point in the Last 12 Months.

Average in Period

48°F

Typical temp during the Last 12 Months.

Temperature Trend: Last 12 Months

Surface temperature over the selected period.

Key Observations (Last 12 Months)

  • Warmest avg: July (69°F).
  • Coolest avg: February (33°F).
  • Rapid warming often occurs: June → July (+14°F).
  • Sharpest cooling trend: November → December (-14°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm09182736

Wind Direction

297°

Pressure

1013 mb

Cloud Cover

92%

Visibility

10 miles

Daily Pressure Forecast

SatSunMonTueWedThuFriSatSun0.008.8617.7226.5835.44
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Frequently Asked Questions About Lake Hopatcong

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