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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: @ 20-Aug-2026 6:25am - next update at 6:30am  
Summary / Temperature Wind Rain Outlook
Dry Dry
Currently: 65.5, Max: 68.7, Min: 65.3 65.5°F
Colder 0.3°F than last hour.

Comfortable

Feels like: 65.5°F

24-hr difference
-1.2°FColder 1.2°F than yesterday at this time.
  Today Yesterday
High: 68.7°F
12:00am 		89.8°F
4:28pm
Low: 65.3°F
5:55am 		66.6°F
6:27am
Calm S
0
Gust:
 0 mph
0 Bft - Calm
Today: 1.2 mph 2:30am
Gust Month: 15.9 mph August 16
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 4.26 in
Season Total: 11.89 in
8 rain days in August.
Tonight

Tonight: Showers And Thunderstorms
Showers And T-Storms
Humidity & Barometer Almanac Moon
Humidity: 98 % Increased 1.0% since last hour.
Dew Point: 64.9°F  
Barometer: 29.961 inHg Rising 0.01 inHg/hr
Baro Trend: Rising slowly
Sunrise: 6:15am
Sunset: 7:50pm
Moonrise: 2:52pm
Moonset: 11:03pm
Waxing Gibbous
Waxing Gibbous, Moon at 7 days in cycle
53%
Illuminated
UV Index Solar Radiation
   0.0    None
High: -1.0 @ 12:18pm
6 W/m2 (0 %)
High: 6 @  6:24am
 NWS Weather Forecast  - Outlook: Today & Tonight
Today

Today: Slight Chance Rain Showers then Showers And Thunderstorms
Slight Chance Rain Showers then Showers And T-Storms

Hi 83 °F		 NWS forecast: A slight chance of rain showers between 10am and noon, then showers and thunderstorms. Partly sunny. High near 83, with temperatures falling to around 77 in the afternoon. East wind 0 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
 
Tonight

Tonight: Showers And Thunderstorms
Showers And T-Storms

Lo 62 °F		 NWS forecast: Showers and thunderstorms before 1am, then patchy fog. Mostly cloudy, with a low around 62. North wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.