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Mercer County, NJ
 Details for Mercer County, NJ Flash Flood Warning  +2 additional alerts
Flash Flood Warning FLASH FLOOD WARNING - Mercer County, NJ
Flood Warning FLOOD WARNING - Mercer County, NJ
Flood Watch FLOOD WATCH - 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: @ 03-Aug-2026 4:00pm - next update at 4:05pm  
Summary / Temperature Wind Rain Outlook
Partly cloudy, Dry Partly cloudy, Dry
Currently: 87.6, Max: 88.2, Min: 72.7 87.6°F
Warmer 2.1°F than last hour.

Warm

Feels like: 94.7°F

24-hr difference
0.1°FWarmer 0.1°F than yesterday at this time.
  Today Yesterday
High: 88.2°F
3:48pm 		90.5°F
3:15pm
Low: 72.7°F
5:43am 		72.3°F
3:43am
Wind from SE SE
1.8
Gust:
 3.4 mph
1 Bft - Light Air
Today: 12.7 mph 12:34pm
Gust Month: 14.8 mph August 2
Rain Today: 2.09 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0.12 in
Storm Rain: 0 in
This Month: 2.21 in
Season Total: 9.84 in
2 rain days in August.
Tonight

Tonight: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy
Humidity & Barometer Almanac Moon
Humidity: 64 % Decreased 10.0% since last hour.
Dew Point: 73.9°F Decreased 2.3°F since last hour.
Barometer: 29.778 inHg Rising 0.01 inHg/hr
Baro Trend: Steady
Sunrise: 5:59am
Sunset: 8:13pm
Moonset: 11:05am
Moonrise: 10:11pm
Waning Gibbous
Waning Gibbous, Moon at 19 days in cycle
74%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 2.0 @ 12:37pm
223 W/m2 (26 %)
High: 998 @  12:26pm
 NWS Weather Forecast  - Outlook: This Afternoon & Tonight
This
Afternoon
This Afternoon: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Hi 84 °F		 NWS forecast: A chance of showers and thunderstorms before 2pm, then showers and thunderstorms likely between 2pm and 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
 
Tonight

Tonight: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy

Lo 63 °F		 NWS forecast: A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 63. Northwest wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.