Trenton, NJ 08645 Weather

Mercer County12:59 PM EDT40.28°N, 74.71°W

Current conditions

Clear
55°
Clear
Feels like 55°
High 61°·Low 33°
WindENE 9 mph
Humidity47%
Dew point36°
Pressure30.36 inHg
Visibility10 mi
Cloud cover11%
UV index3 Moderate
Sunrise7:19 AM
Sunset6:09 PM

Observed at Trenton-Mercer Airport · 1 hr ago

Forecast

10-day

  • Today

    Sunny, with a high near 61. Northeast wind 5 to 10 mph, with gusts as high as 25 mph.

  • Tonight

    Areas of frost after 11pm. Partly cloudy, with a low around 33. Northeast wind around 5 mph.

  • Saturday

    Areas of frost before 9am. Mostly sunny, with a high near 62. Northeast wind 0 to 5 mph.

National Weather Service forecast updated 8 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 58°
  2. 1 PM Sunny 60°
  3. 2 PM Sunny 60°
  4. 3 PM Sunny 61°
  5. 4 PM Sunny 61°
  6. 5 PM Sunny 60°
  7. 6 PM Mostly Clear 57°
  8. 7 PM Mostly Clear 50°
  9. 8 PM Partly Cloudy 45°
  10. 9 PM Partly Cloudy 43°
  11. 10 PM Partly Cloudy 40°
  12. 11 PM Patchy Frost 38°
  13. Sat12 AM Patchy Frost 37°
  14. 1 AM Areas Of Frost 36°
  15. 2 AM Areas Of Frost 36°
  16. 3 AM Areas Of Frost 35°
  17. 4 AM Areas Of Frost 35°
  18. 5 AM Areas Of Frost 34°
  19. 6 AM Areas Of Frost 33°
  20. 7 AM Areas Of Frost 34°
  21. 8 AM Areas Of Frost 36°
  22. 9 AM Mostly Sunny 42°
  23. 10 AM Mostly Sunny 50°
  24. 11 AM Mostly Sunny 55°

10-day forecast

Details
  1. TodayOct 23 Sunny Sunny33°61°
  2. SatOct 24 Areas Of Frost then Mostly Sunny Areas Of Frost then Mostly Sunny33°62°
  3. SunOct 25 Widespread Frost then Sunny Widespread Frost then Sunny35°66°
  4. MonOct 26 Sunny Sunny46°70°
  5. TueOct 27 Sunny Sunny39°64°
  6. WedOct 28 Mostly Sunny Mostly Sunny42°61°
  7. ThuOct 29 Mostly Sunny Mostly Sunny44°66°
  8. FriOct 30 Partly cloudy Partly cloudy48°65°
  9. SatOct 31 Sunny Sunny39°56°
  10. SunNov 1 Partly cloudy Partly cloudy38°58°

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

Radar

Full map
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Weather news near Trenton

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Air quality

38
Good
Fine particles (PM2.5)

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

Forecast

  • FriGood (45)
  • SatModerate (55)
  • SunModerate (65)

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 7:19 AM
Sunset 6:09 PM
Daylight 10 h 50 min (−2 min 29 s tomorrow)
Waxing Gibbous · 93% lit
Moonrise 4:35 PM Moonset 4:25 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low63° / 43°
Record high85° (1947)
Record low28° (1997)
Wettest1.63 in (1983)
Month to date2.14 in (normal 2.75 in)

Trenton Area, records since 1865. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in PHI, issued 7 hrs ago

What Has Changed

Updated aviation section for 12Z TAFs.

Key Messages

1. Elevated tide cycles persist due to Post-Tropical Cyclone Josephine well off the coast, resulting in widespread minor coastal flooding continuing in Ocean County, NJ and Sussex County, DE.

2. Frost and freeze impacts possible tonight and Saturday night where the growing season continues.

Discussion

KEY MESSAGE 1...Elevated tide cycles persist due to Post- Tropical Cyclone Josephine well off the coast, resulting in widespread minor coastal flooding continuing in Ocean County, NJ and Sussex County, DE.

As Post-Tropical Cyclone Josephine lingers well off the coast elevated tide cycles are persisting some areas.

In Ocean County, New Jersey and Sussex County, Delaware, water levels remain elevated and minor tidal flooding is continuing, particularly in the back bays. In fact a few locations in the back bays came very close to or even touched moderate levels of coastal flooding yesterday with the high tide. It's going to take some time for water levels to diminish in these areas so we've continued the Coastal Flood Advisory for these counties through this evening. Elsewhere along the Atlantic coast and Delaware Bay any additional coastal flooding looks to be spotty at most.

At this time we are not forecasting any coastal flooding for the Maryland eastern shore.

KEY MESSAGE 2...Frost and freeze impacts possible tonight and Saturday night where the growing season continues.

As an upper-level trough pivots across the Northeast today, a strong mid-level ridge in the Plains to Midwest shifts eastward some into the weekend. This will support strong surface high pressure shifting eastward into the Northeast and Mid-Atlantic through the weekend.

Aviation

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

Today...VFR. North winds around 7-12 kt will become more easterly late in the day. A few gusts up to 15-20 kt possible. High confidence.

Tonight...VFR. Winds northeast around 5 kts. High confidence.

Outlook...

Saturday through Tuesday...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.