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Trenton, NJ weather, straight from the source.

Current conditions, official National Weather Service forecasts and alerts, rain timing, local radar, air quality, wind, humidity, sunrise, sunset, and the latest reported update for Trenton, NJ. Always follow local warnings and emergency instructions.

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Weather status

Flood Watch

Flood Watch issued September 12 at 2:21AM EDT until September 13 at 12:00PM EDT by NWS Mount Holly NJ Expires Sun, 12:00 PM EDT.

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Official NOAA / NWSWSR-88D DopplerUpdates every 5 minutes

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What’s next

Hourly forecast

⌖ Trenton, NJ

Check the latest hourly conditions, seven-day outlook, rain timing, wind, sunrise and sunset for Trenton, NJ. Forecasts and alerts update from NOAA and the National Weather Service.

61°Clear0% rain
60°Mostly Clear0% rain
59°Sunny0% rain
60°Mostly Sunny0% rain
63°Mostly Sunny0% rain
67°Mostly Sunny0% rain
72°Mostly Sunny0% rain
76°Mostly Sunny0% rain

Next 24 hours

Rain Timeline

Highest chance 81%

Most likely around 12 AM, 1 AM, 2 AM, 3 AM. Expected type: Thunderstorms.

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1%None
1%None
2%None
2%None
2%None
2%None
2%None
2%None
5%None
13%None
22%Thunderstorms
30%Thunderstorms
47%None
64%None
81%None
81%None

Official NWS outlook

7-Day Forecast

High / low temperatures

Today

! NWS
82°68°

Mostly Sunny

Precipitation
82%
Wind
E 0 to 10 mph
Sunrise
6:38 AM
Sunset
7:15 PM

Sun

82°65°

Patchy Fog

Precipitation
82%
Wind
SW 5 mph
Sunrise
6:39 AM
Sunset
7:13 PM

Mon

76°53°

Mostly Sunny

Precipitation
11%
Wind
N 5 to 10 mph
Sunrise
6:40 AM
Sunset
7:11 PM

Tue

76°56°

Sunny

Precipitation
0%
Wind
E 0 to 5 mph
Sunrise
6:41 AM
Sunset
7:10 PM

Wed

82°61°

Sunny

Precipitation
4%
Wind
0 mph
Sunrise
6:42 AM
Sunset
7:08 PM

Thu

84°63°

Mostly Sunny then Slight Chance Rain Showers

Precipitation
23%
Wind
SW 0 to 5 mph
Sunrise
6:42 AM
Sunset
7:06 PM

Fri

81°—

Slight Chance Rain Showers

Precipitation
23%
Wind
N 5 mph
Sunrise
6:43 AM
Sunset
7:05 PM

Forecasts, icons, precipitation, wind, and alerts are from the National Weather Service. Sunrise and sunset are calculated locally for the selected coordinates.

Weather guidance for your areaPlan with the complete forecast

Use current official weather information for Trenton, NJ before making weather-sensitive plans.

Safety guides

Weather for a healthier day

Healthy Weather

Real Feel61°F
Walking is not recommended now

Review the active Flood Watch before going outside. MyUSA.us will not recommend this activity while an NWS watch, warning, or emergency is active.

WindCalm0 mph
Best walk timeReview the active Flood Watch before leaving

MyUSA.us will not recommend an outing window while an NWS watch, warning, or emergency is active. Follow the official alert and local instructions.

Official EPA AirNowLocal air qualityTrenton, NJ
View AQI +
Full air-quality page →AirNow details ↗Smoke and fire map ↗
More weather details
Wind gustsNot reported
Rain now0%next hour
Humidity77%current
Daily peak UV forecastCheckingEPA daily maximum · not a current reading

Wind impact: Light wind with little expected outdoor impact.

Full Healthy Weather guides and reminders →

“Better weather window” is planning guidance based on official NWS data—not a promise of safe conditions. Review active alerts and radar before leaving.

Storm & DetailsGusts, pressure, visibility and official risk outlooksView details +
Wind gustNot reported
Pressure30.07 in
Visibility10.0 mi
Peak rain chance81%
Dew point54°F
Active alerts1

Official risk outlooks

These national tools add expert storm, heavy-rain and flooding context to your local forecast.

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Hurricane center

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Simple, useful help

Weather safety guides

Quick answers for heat, storms, flooding and hurricane preparation—kept separate so your main weather page stays clean.

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Hot weather

Heat and sun safety

Plan outdoor time and recognize dangerous heat.

Severe weather

Storms and lightning

Know when to move indoors and where to shelter.

Travel safety

Flooding and driving

Avoid flooded roads and prepare before a trip.

Stay weather-ready

Active NWS alerts

Weather safety ↗

Severe · Future

Flood Watch

Applies to: New Castle; Morris; Hunterdon; Somerset; Middlesex; Western Monmouth; Eastern Monmouth; Mercer; Salem; Gloucester; Camden; Northwestern Burlington; Ocean; Coastal Ocean; Southeastern Burlington; Delaware; Philadelphia; Western Montgomery; Eastern Montgomery; Upper Bucks; Lower BucksIssued by: NWS Mount Holly NJFlood Watch issued September 12 at 2:21AM EDT until September 13 at 12:00PM EDT by NWS Mount Holly NJ
Alert details* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of northern Delaware, including the following area, New Castle, New Jersey, including the following areas, Camden, Coastal Ocean, Eastern Monmouth, Gloucester, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, Salem, Somerset, Southeastern Burlington and Western Monmouth, and southeast Pennsylvania, including the following areas, Delaware, Eastern Montgomery, Lower Bucks, Philadelphia, Upper Bucks and Western Montgomery. * WHEN...From late tonight through Sunday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Showers and thunderstorms will develop this evening, and then will become more widespread late tonight and into Sunday morning. Some of these showers and thunderstorms will be capable of heavy rainfall, with as much as 1 to 2 inches of rain possible in the strongest storms in a short window of time. - http://www.weather.gov/safety/flood
Safety instructionsYou should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
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