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

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

75°F

24°C

Humidity 64%
Wind Speed SW 12 mph
Barometer 29.88 in (1011.0 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 13 Oct 5:53 pm EDT
Extended Forecast for

Morrisville PA

  • Tonight

    Tonight: Clear, with a low around 65. Southwest wind 5 to 10 mph.

    Low: 65 °F

    Clear

  • Wednesday

    Wednesday: A slight chance of showers between 1pm and 2pm. Increasing clouds, with a high near 84. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 84 °F

    Sunny then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, then becoming cloudy toward daybreak, with a low around 56. Northwest wind around 5 mph becoming north after midnight.

    Low: 56 °F

    Becoming
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69. North wind around 5 mph becoming east in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers, mainly after 2am. Low around 55. Southeast wind around 5 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 2pm. High near 78. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers

  • Friday Night

    Friday Night: Showers before 8pm. Low around 44. Chance of precipitation is 80%.

    Low: 44 °F

    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 54. Breezy.

    High: 54 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Patchy frost after 4am. Otherwise, mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear
    then Patchy
    Frost

Detailed Forecast

Tonight
Clear, with a low around 65. Southwest wind 5 to 10 mph.
Wednesday
A slight chance of showers between 1pm and 2pm. Increasing clouds, with a high near 84. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, then becoming cloudy toward daybreak, with a low around 56. Northwest wind around 5 mph becoming north after midnight.
Thursday
Mostly sunny, with a high near 69. North wind around 5 mph becoming east in the afternoon.
Thursday Night
Showers, mainly after 2am. Low around 55. Southeast wind around 5 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers, with thunderstorms also possible after 2pm. High near 78. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers before 8pm. Low around 44. Chance of precipitation is 80%.
Saturday
Mostly sunny, with a high near 54. Breezy.
Saturday Night
Patchy frost after 4am. Otherwise, mostly clear, with a low around 37.
Sunday
Patchy frost before 9am. Otherwise, sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 41.
Monday
Mostly sunny, with a high near 66.
Monday Night
Mostly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Morrisville PA
 40.2°N 74.79°W (Elev. 98 ft)
Last Update:
4:09 pm EDT Oct 13, 2026
Forecast Valid:
6pm EDT Oct 13, 2026-6pm EDT Oct 20, 2026
 
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