Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

83°F

28°C

Humidity	44%
Wind Speed	Vrbl 6 mph
Barometer	30.10 in (1018.5 mb)
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	4 Aug 1:53 pm EDT

More Information:

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

Extended Forecast for

Morrisville PA

This Afternoon
High: 85 °F
Mostly Sunny
Tonight
Low: 67 °F
Partly Cloudy
then Patchy
Fog
Wednesday
High: 84 °F
Slight Chance
Showers and
Patchy Fog
then Showers
Likely
Wednesday Night
Low: 72 °F
Showers
Likely then
Chance
Showers
Thursday
High: 90 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 73 °F
Chance
T-storms then
Chance
Showers
Friday
High: 90 °F
Sunny then
Chance
T-storms
Friday Night
Low: 71 °F
Chance
T-storms
Saturday
High: 89 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 85. East wind around 5 mph.

Tonight

Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 67. East wind around 5 mph becoming calm.

Wednesday

A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 84. Calm wind becoming southeast 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 72. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Partly cloudy, with a low around 73. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.

Saturday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.

Saturday Night

A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.

Sunday

Mostly sunny, with a high near 89.

Sunday Night

Partly cloudy, with a low around 72.