



Briefing for Flash Flooding, Severe Storms, and Heat Risks through Wednesday
Several rounds of showers and thunderstorms through Wednesday could result in localized flash flooding and isolated damaging wind gusts. See this briefing for details on these threats. Read More >
Hazardous Weather Conditions
Current conditions at
Trenton-Mercer Airport (KTTN)
Lat: 40.28°NLon: 74.82°WElev: 210ft.
Fair
76°F
24°C
Humidity | 97% |
Wind Speed | SW 6 mph |
Barometer | 29.94 in (1013.1 mb) |
Dewpoint | 75°F (24°C) |
Visibility | 9.00 mi |
Heat Index | 75°F (24°C) |
Last update | 8 Jul 2:53 am EDT |
Extended Forecast for
Trenton NJSimilar City Names
Flood Watch July 8, 02:00pm until July 9, 12:00am
Heat Advisory July 8, 10:00am until July 8, 08:00pm
Overnight
Low: 72 °F
Partly Cloudy
Tuesday
High: 93 °F
Sunny then
Chance
T-stormsTuesday Night
Low: 72 °F
Showers
LikelyWednesday
High: 88 °F
Chance
Showers then
Chance
T-stormsWednesday Night
Low: 71 °F
Chance
T-storms then
Chance
ShowersThursday
High: 83 °F
Showers
LikelyThursday Night
Low: 69 °F
Showers
LikelyFriday
High: 80 °F
Chance
Showers then
Chance
T-stormsFriday Night
Low: 67 °F
Chance
T-storms then
Chance
Showers
Detailed Forecast
Overnight
Partly cloudy, with a low around 72. Calm wind.
Tuesday
A chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 93. Heat index values as high as 102. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 72. West wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. Calm wind becoming west around 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Cloudy, with a low around 69. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Saturday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Trenton NJSimilar City Names
40.22°N 74.75°W (Elev. 23 ft)
40.22°N 74.75°W (Elev. 23 ft)
4:12 pm EDT Jul 7, 2025
3am EDT Jul 8, 2025-6pm EDT Jul 14, 2025