Hopatcong, NJ 07843 Weather

Sussex County4:46 PM EDT40.94°N, 74.66°W

Current conditions

Sunny
62°
Sunny
Feels like 62°
High 63°·Low 35°
WindW 5 mph
Humidity38%
Dew point36°
Cloud cover11%
UV index1 Low
Sunrise7:22 AM
Sunset6:05 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Sunday

    Widespread frost before 9am. Sunny, with a high near 63. Northwest wind around 5 mph.

  • Sunday Night

    Mostly clear, with a low around 35.

  • Monday

    Sunny, with a high near 67.

National Weather Service forecast updated 2 days ago.

Hourly

Hourly forecast
  1. Now Sunny 62°
  2. 5 PM Sunny 61°
  3. 6 PM Mostly Clear 56°
  4. 7 PM Mostly Clear 51°
  5. 8 PM Mostly Clear 46°
  6. 9 PM Mostly Clear 43°
  7. 10 PM Mostly Clear 42°
  8. 11 PM Mostly Clear 41°
  9. Mon12 AM Mostly Clear 40°
  10. 1 AM Mostly Clear 39°
  11. 2 AM Mostly Clear 38°
  12. 3 AM Mostly Clear 37°
  13. 4 AM Mostly Clear 37°
  14. 5 AM Mostly Clear 37°
  15. 6 AM Sunny 35°
  16. 7 AM Sunny 35°
  17. 8 AM Sunny 37°
  18. 9 AM Sunny 42°
  19. 10 AM Sunny 49°
  20. 11 AM Sunny 56°
  21. 12 PM Sunny 60°
  22. 1 PM Sunny 64°
  23. 2 PM Sunny 65°
  24. 3 PM Sunny 67°

10-day forecast

Details
  1. FriOct 23 Sunny Sunny31°57°
  2. SatOct 24 Widespread Frost then Mostly Sunny Widespread Frost then Mostly Sunny33°59°
  3. TodayOct 25 Widespread Frost then Sunny Widespread Frost then Sunny35°63°
  4. MonOct 26 Sunny Sunny43°67°
  5. TueOct 27 Sunny Sunny36°59°
  6. WedOct 28 Mostly Sunny Mostly Sunny39°56°
  7. ThuOct 29 Mostly Sunny Mostly Sunny42°61°
  8. FriOct 30 Mostly sunny Mostly sunny44°60°
  9. SatOct 31 Sunny Sunny39°52°
  10. SunNov 1 Mostly sunny Mostly sunny36°55°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

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Weather news near Hopatcong

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Air quality

42
Good
Ozone

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • SunModerate (60)
  • MonModerate (65)

North Central, NJ reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:22 AM
Sunset 6:05 PM
Daylight 10 h 43 min (−2 min 31 s tomorrow)
Full Moon · 100% lit
Moonrise 5:24 PM Moonset 6:43 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low61° / 39°
Month to date2.75 in (normal 3.49 in)

Boonton 1 Se, records since 1892. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in PHI, issued 1 hr ago

What Has Changed

Issued Frost Advisories for portions of southern New Jersey and the Delmarva tonight where the growing season remains active.

Key Messages

1. One more round of frost impacts are expected tonight where the growing season continues.

2. Dry weather continues and above normal temperatures are expected for much of the week into the start of the weekend.

Discussion

KEY MESSAGE 1...One more round of frost impacts are expected tonight where the growing season continues.

Little change in the overall synoptic pattern continues as surface high pressure remains overhead. The high will begin to shift southward tonight allowing a light southwesterly return flow to develop. As a result, temperatures will begin to gradually moderate through Monday.

But before we reach the new week, one more round of chilly temperatures are expected tonight. Ideal radiational cooling conditions look to take place with light/calm winds and clear skies. NBM has been quite poor the past few days with the extent of radiational cooling, so have blended in some colder and better performing guidance over the past couple of nights (MOS/NBM10). This should allow most of the area to again see lows mainly in the mid 30s to low 40s around the region. Have issued one more set of Frost Advisories, mainly across extreme southern New Jersey and the Delmarva where the growing season remains active. Some areas of patchy shallow ground fog is also expected early Monday morning.

KEY MESSAGE 2...Dry weather continues and above normal temperatures are expected for much of the week into the start of the weekend.

As what has been the case for the past week or so, dry weather is expected to prevail over the next 5-7 days. However this time, above-normal temperatures for late October/early November are expected to be accompanied by this dry stretch.

Surface high pressure will largely be in control through much of the week, however there will be one dry cold front that is progged to cross through the area Monday night into Tuesday. From Tuesday and beyond, expansive high pressure is expected to dominate as upper level ridging develops over the majority of the Central-Eastern CONUS with positive 500 mb anomalies.

Aviation

The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today...VFR/SKC. Southwest winds around 3-6 kt. High confidence.

Tonight...VFR/SKC. A few areas of localized patchy ground fog is possible after 09Z, especially at RDG and MIV so have included a brief tempo group. Winds light and variable to at times calm. High confidence overall, lesser confidence in where areas of ground fog may develop.

Monday...VFR/SKC. West-northwest winds around 5-10 kt. High confidence.

Outlook...

Monday night through Friday...VFR. No significant weather expected.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use. How to use Weather