Heavy Rain in the Southern Appalachians; Heat Continues in the West; Monitoring Tropical Storm Erin

Heavy to excessive rain falling over the southern Appalachians may bring areas of flooding into Wednesday. Hot temperatures are in place through Wednesday across parts of the western U.S. and New England. Tropical Storm Erin is forecast to become a Hurricane by late this week as it moves westward across the central Atlantic Ocean. Monitor forecasts for any Puerto Rico or U.S. East Coast impacts. Read More >

Hazardous Weather Conditions

Air Quality Alert

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

81°F

27°C

Humidity	69%
Wind Speed	S 6 mph
Barometer	29.97 in (1014.1 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Heat Index	84°F (29°C)
Last update	12 Aug 8:53 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Princeton NJ

Tonight
Low: 69 °F
Mostly Clear
then Patchy
Fog
Wednesday
High: 91 °F
Patchy Fog
then Showers
Likely
Wednesday Night
Low: 71 °F
Showers
Likely
Thursday
High: 88 °F
Chance
T-storms then
Showers
Likely
Thursday Night
Low: 68 °F
Showers
Likely then
Slight Chance
Showers
Friday
High: 88 °F
Sunny then
Slight Chance
Showers
Friday Night
Low: 65 °F
Mostly Clear
Saturday
High: 87 °F
Sunny
Saturday Night
Low: 66 °F
Mostly Clear

Detailed Forecast

Tonight

Patchy fog after 2am. Otherwise, mostly clear, with a low around 69. South wind around 5 mph becoming calm.

Wednesday

A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 91. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Thursday

A chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 88. Calm wind becoming northwest around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 68. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

A slight chance of showers after 2pm. Sunny, with a high near 88. Chance of precipitation is 20%.

Friday Night

Mostly clear, with a low around 65.

Saturday

Sunny, with a high near 87.

Saturday Night

Mostly clear, with a low around 66.

Sunday

Sunny, with a high near 92.

Sunday Night

Partly cloudy, with a low around 70.