Mercerville-Hamilton Square, NJ Weather

Mercer County11:44 AM EDT40.23°N, 74.67°WElevation 98 ft

Current conditions

Sunny
57°
Sunny
Feels like 57°
High 67°·Low 36°
WindCalm
Humidity51%
Dew point39°
Visibility10 mi
Cloud cover3%
UV index3 Moderate
Sunrise7:21 AM
Sunset6:06 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 67. West wind around 0 mph.

  • Sunday Night

    Patchy frost after 11pm. Mostly clear, with a low around 36. West wind around 0 mph.

  • Monday

    Patchy frost before 9am. Sunny, with a high near 70. West wind 0 to 5 mph.

National Weather Service forecast updated 18 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 57°
  2. 12 PM Sunny 61°
  3. 1 PM Sunny 63°
  4. 2 PM Sunny 65°
  5. 3 PM Sunny 66°
  6. 4 PM Sunny 66°
  7. 5 PM Sunny 65°
  8. 6 PM Clear 60°
  9. 7 PM Clear 54°
  10. 8 PM Mostly Clear 48°
  11. 9 PM Clear 44°
  12. 10 PM Clear 42°
  13. 11 PM Patchy Frost 40°
  14. Mon12 AM Patchy Frost 38°
  15. 1 AM Patchy Frost 37°
  16. 2 AM Patchy Frost 37°
  17. 3 AM Patchy Frost 37°
  18. 4 AM Patchy Frost 36°
  19. 5 AM Patchy Frost 36°
  20. 6 AM Patchy Frost 36°
  21. 7 AM Patchy Frost 36°
  22. 8 AM Patchy Frost 37°
  23. 9 AM Partly Sunny 46°
  24. 10 AM Mostly Sunny 53°

10-day forecast

Details
  1. TonightOct 24 Widespread Frost Widespread Frost32°
  2. TodayOct 25 Widespread Frost then Sunny Widespread Frost then Sunny36°67°
  3. MonOct 26 Patchy Frost then Sunny Patchy Frost then Sunny44°70°
  4. TueOct 27 Sunny Sunny38°64°
  5. WedOct 28 Mostly Sunny Mostly Sunny43°64°
  6. ThuOct 29 Mostly Sunny Mostly Sunny48°70°
  7. FriOct 30 Sunny Sunny48°73°
  8. SatOct 31 Mostly Sunny Mostly Sunny70°
  9. SunNov 1 Cloudy Cloudy0.09 in47°66°
  10. MonNov 2 Cloudy Cloudy0.30 in56°67°

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

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news in New Jersey

More weather news

Air quality

58
Moderate
Fine particles (PM2.5)

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Forecast

  • SunModerate (65)
  • MonModerate (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 7:21 AM
Sunset 6:06 PM
Daylight 10 h 45 min (−2 min 28 s tomorrow)
Full Moon · 99% lit
Moonrise 5:25 PM Moonset 6:42 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low62° / 42°
Record high77° (1963)
Record low30° (1891)
Wettest2.67 in (1980)
Yesterday62° / 33°
Month to date2.14 in (normal 3.00 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 1 hr ago

What Has Changed

Expired the Freeze Warnings and Frost Advisories and updated Key Message 1.

Key Messages

1. Another round of frost and freeze impacts are expected tonight where the growing season continues.

2. Spotty minor tidal flooding may linger today.

Discussion

KEY MESSAGE 1...Another round of frost and freeze impacts are expected tonight where the growing season continues.

Freeze Warnings and Frost Advisories were allowed to expire at 9 AM. After multiple days of sub-freezing temperatures across portions of New Jersey, it has been determined that the 2026 growing season has ended for the following counties...

In New Jersey...Atlantic, Burlington, Mercer, Middlesex, Monmouth, and Ocean counties.

No additional frost/freeze headlines will be issued for these counties until Spring 2027.

Little change in the overall synoptic pattern is expected today and tonight with strong surface high pressure essentially overhead. The high will weaken Monday and drift to the south. Slow moderation of temperatures begin today and continue Monday.

Temperatures today will be a few degrees milder than on Saturday under sunny skies. With skies remaining clear tonight, another round of frost is possible tonight into Monday morning. Lows around the region will mainly be in the mid 30s to low 40s. Additional frost advisories may be warranted for the upcoming night...more details to come in in this afternoon's update.

Aviation

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

Today and Tonight...VFR/SKC. Calm winds in the morning, settling out of the southwest less than 5 kts after 15-16Z. High confidence.

Outlook...

Monday through Thursday...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 4Conservative index and reflects what the press published. Terms of use. How to use Weather