Hazardous Weather Conditions
Current conditions at
Trenton-Mercer Airport (KTTN)
Lat: 40.28°NLon: 74.82°WElev: 210ft.
Fair
76°F
24°C
| Humidity | 74% |
| Wind Speed | Calm |
| Barometer | 30.01 in (1015.6 mb) |
| Dewpoint | 67°F (19°C) |
| Visibility | 10.00 mi |
| Heat Index | 77°F (25°C) |
| Last update | 19 May 10:53 pm EDT |
Extended Forecast for
Trenton, Mercer County Airport NJ
Heat Advisory May 19, 11:12pm until May 20, 08:00pm
NOW until 8:00pm Wed

Heat Advisory
Tonight

Low: 72 °F
Partly Cloudy
Wednesday
High: 93 °F
Sunny then
Showers
LikelyWednesday Night
Low: 54 °F
Chance
T-storms then
Showers
LikelyThursday
High: 67 °F
Showers
Likely then
Chance
ShowersThursday Night

Low: 50 °F
Mostly Cloudy
Friday

High: 65 °F
Chance
ShowersFriday Night

Low: 47 °F
Showers
LikelySaturday

High: 59 °F
Showers
Detailed Forecast
Tonight
Partly cloudy, with a low around 72. Southwest wind around 5 mph.
Wednesday
A chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Increasing clouds, with a high near 93. West wind 5 to 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 54. North wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely, mainly before 8am. Mostly cloudy, with a high near 67. North wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, with a low around 50. Calm wind.
Friday
A chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers likely. Cloudy, with a low around 47. Chance of precipitation is 70%.
Saturday
Showers. High near 59. Chance of precipitation is 80%.
Saturday Night
Showers. Low around 50. Chance of precipitation is 80%.
Sunday
Showers likely, mainly before 8am. Cloudy, with a high near 67. Chance of precipitation is 60%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 74. Chance of precipitation is 30%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 30%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Trenton, Mercer County Airport NJ
40.32°N 74.82°W (Elev. 197 ft)
40.32°N 74.82°W (Elev. 197 ft)
7:15 pm EDT May 19, 2026
11pm EDT May 19, 2026-6pm EDT May 26, 2026



