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Mercer County, NJ
 Details for Mercer County, NJ Flood Watch
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: @ 26-Jul-2026 8:55am - next update at 9:00am  
Summary / Temperature Wind Rain Outlook
Mainly cloudy, Dry Mainly cloudy, Dry
Currently: 66.2, Max: 66.4, Min: 55.4 66.2°F
Warmer 6.8°F than last hour.

Comfortable

Feels like: 66.2°F

24-hr difference
-1.8°FColder 1.8°F than yesterday at this time.
  Today Yesterday
High: 66.4°F
8:44am 		82.6°F
2:43pm
Low: 55.4°F
3:14am 		58.1°F
6:14am
Wind from NNW NNW
0.2
Gust:
 1.1 mph
0 Bft - Calm
Today: 1.2 mph 12:02am
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: 4.43 in
Season Total: 7.22 in
9 rain days in July.
Tonight

Tonight: Chance Showers And Thunderstorms then Patchy Fog
Chance Showers And T-Storms then Patchy Fog
Humidity & Barometer Almanac Moon
Humidity: 73 % Decreased 18.0% since last hour.
Dew Point: 57.3°F Increased 0.5°F since last hour.
Barometer: 29.961 inHg Falling 0.01 inHg/hr
Baro Trend: Steady
Sunrise: 5:52am
Sunset: 8:21pm
Moonset: 2:37am
Moonrise: 6:51pm
Waxing Gibbous
Waxing Gibbous, Moon at 11 days in cycle
91%
Illuminated
UV Index Solar Radiation
   0.0    None
High: -1.0 @ 12:33pm
114 W/m2 (36 %)
High: 122 @  8:47am
 NWS Weather Forecast  - Outlook: This Afternoon & Tonight
This
Afternoon
This Afternoon: Showers And Thunderstorms Likely
Showers And T-Storms Likely

Hi 86 °F		 NWS forecast: Showers and thunderstorms likely before 5pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 86, with temperatures falling to around 80 in the afternoon. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
 
Tonight

Tonight: Chance Showers And Thunderstorms then Patchy Fog
Chance Showers And T-Storms then Patchy Fog

Lo 66 °F		 NWS forecast: A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 9pm, then a slight chance of showers and thunderstorms between 9pm and 11pm, then patchy fog. Partly cloudy, with a low around 66. South wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.