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Mercer County, NJ
 Details for Mercer County, NJ Extreme Heat Warning  +2 additional alerts
Extreme Heat Warning EXTREME HEAT WARNING - Mercer County, NJ
Air Quality Alert AIR QUALITY ALERT - Mercer County, NJ

NWS Northeast Regional Radar WU North East Satellite
Radar/Satellite images courtesy of NOAA/NWS and Weather Underground.
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Updated: @ 14-Jul-2026 5:35pm - next update at 5:40pm  
Summary / Temperature Wind Rain Outlook
Mainly cloudy, Dry Mainly cloudy, Dry
Currently: 90.7, Max: 92.5, Min: 63.9 90.7°F
Colder 0.7°F than last hour.

Hot

Feels like: 94.1°F

24-hr difference
4.7°FWarmer 4.7°F than yesterday at this time.
  Today Yesterday
High: 92.5°F
3:31pm 		88.7°F
4:09pm
Low: 63.9°F
5:55am 		61°F
5:38am
Wind from SSE SSE
1.8
Gust:
 6.9 mph
2 Bft - Light Air
Today: 11.5 mph 2:23pm
Gust Month: 23.9 mph July 3
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 3.57 in
Season Total: 6.36 in
7 rain days in July.
Tonight

Tonight: Mostly Clear
Mostly Clear
Humidity & Barometer Almanac Moon
Humidity: 46 % Decreased 2.0% since last hour.
Dew Point: 67.1°F Decreased 1.9°F since last hour.
Barometer: 29.961 inHg Falling 0.03 inHg/hr
Baro Trend: Falling slowly
Sunrise: 5:42am
Sunset: 8:30pm
Moonrise: 5:35am
Moonset: 8:14pm
New Moon
New Moon, Moon at 0 days in cycle
0%
Illuminated
UV Index Solar Radiation
   0.0    None
High: -1.0 @ 11:20am
279 W/m2 (42 %)
High: 802 @  12:35pm
 NWS Weather Forecast  - Outlook: This Afternoon & Tonight
This
Afternoon
This Afternoon: Sunny
Sunny

Hi 94 °F		 NWS forecast: Sunny, with a high near 94. West wind around 10 mph.
 
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 75 °F		 NWS forecast: Mostly clear, with a low around 75. West wind 5 to 10 mph.