National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat and Fire Weather Concerns in the West; Excessive Rainfall Possible in the South-Central U.S.

Heat will build over the Intermountain West and the Southwest the next couple of days. Lightning from dry thunderstorms can create new fire starts and combined with gusty winds may cause a fire to rapidly grow in Oregon and northern California. Flash flooding will be possible in Arizona and west Texas today, as well as parts of the southern and central Plains due to slow moving thunderstorms. Read More >

Hazardous Weather Conditions

Current conditions at

Trenton, Mercer County Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

84°F

29°C

Humidity 63%
Wind Speed Vrbl 3 mph
Barometer 30.00 in (1015.2 mb)
Dewpoint 70°F (21°C)
Visibility 9.00 mi
Heat Index88°F (31°C)
Last update 30 Jun 10:53 am EDT
Extended Forecast for

Fairless Hills PA

Heat Advisory June 30, 12:00pm until June 30, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. South wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 90. Southwest wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Chance
    T-storms then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 71. West wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 71 °F

    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers before 8am. Mostly sunny, with a high near 87. West wind around 5 mph. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. South wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 90. Southwest wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 71. West wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers before 8am. Mostly sunny, with a high near 87. West wind around 5 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 66.
Independence Day
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 63.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Partly sunny, with a high near 90.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fairless Hills PA
 40.19°N 74.88°W (Elev. 190 ft)
Last Update:
4:13 am EDT Jun 30, 2025
Forecast Valid:
11am EDT Jun 30, 2025-6pm EDT Jul 6, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation