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.

Overcast

57°F

14°C

Humidity 93%
Wind Speed N 5 mph
Barometer 30.25 in (1023.7 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 21 May 7:53 pm EDT
Extended Forecast for

Morrisville PA

  • Tonight

    Tonight: A slight chance of showers before 10pm. Cloudy, with a low around 52. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 52 °F

    Slight Chance
    Showers then
    Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 63. East wind around 10 mph, with gusts as high as 20 mph.

    High: 63 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of showers before 8pm, then rain likely after midnight. Cloudy, with a low around 47. East wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Slight Chance
    Showers then
    Rain Likely

  • Saturday

    Saturday: Rain. High near 57. East wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Low around 48. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 48 °F

    Rain

  • Sunday

    Sunday: Rain likely before 11am, then showers likely, mainly between 11am and 2pm. Cloudy, with a high near 66. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 66 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A chance of showers after 2am. Cloudy, with a low around 55. Chance of precipitation is 30%.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Memorial Day

    Memorial Day: A chance of showers. Cloudy, with a high near 71. Chance of precipitation is 40%.

    High: 71 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers before 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers before 10pm. Cloudy, with a low around 52. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
Mostly cloudy, with a high near 63. East wind around 10 mph, with gusts as high as 20 mph.
Friday Night
A slight chance of showers before 8pm, then rain likely after midnight. Cloudy, with a low around 47. East wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain. High near 57. East wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Rain. Low around 48. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Sunday
Rain likely before 11am, then showers likely, mainly between 11am and 2pm. Cloudy, with a high near 66. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers after 2am. Cloudy, with a low around 55. Chance of precipitation is 30%.
Memorial Day
A chance of showers. Cloudy, with a high near 71. Chance of precipitation is 40%.
Monday Night
A chance of showers before 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
Tuesday
Mostly cloudy, with a high near 80.
Tuesday Night
Mostly cloudy, with a low around 59.
Wednesday
Partly sunny, with a high near 83.
Wednesday Night
Mostly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 81.
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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:
4:08 pm EDT May 21, 2026
Forecast Valid:
8pm EDT May 21, 2026-6pm EDT May 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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