Morrisville, North Carolina 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Morrisville NC
National Weather Service Forecast for:
Morrisville NC
Issued by: National Weather Service Raleigh, NC |
Updated: 3:23 pm EDT Aug 12, 2025 |
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This Afternoon
 T-storms Likely
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Tonight
 Chance T-storms
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Wednesday
 Chance Showers then Showers Likely
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Wednesday Night
 Showers Likely
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Thursday
 Slight Chance Showers then Chance T-storms
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Thursday Night
 Chance T-storms
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Friday
 Mostly Sunny then Chance T-storms
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Friday Night
 Chance T-storms then Partly Cloudy
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Saturday
 Mostly Sunny then Chance T-storms
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Hi 84 °F |
Lo 73 °F |
Hi 84 °F |
Lo 73 °F |
Hi 87 °F |
Lo 72 °F |
Hi 88 °F |
Lo 72 °F |
Hi 87 °F |
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Hazardous Weather Outlook
This Afternoon
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Showers and thunderstorms likely, mainly before 5pm. Mostly cloudy, with a high near 84. Southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Tonight
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A chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 73. Light south wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Wednesday
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A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 84. Southwest wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Wednesday Night
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Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 73. Southwest wind 3 to 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
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A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. West wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Thursday Night
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A chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 72. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Friday
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A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 30%. |
Friday Night
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A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 72. Chance of precipitation is 30%. |
Saturday
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A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 30%. |
Saturday Night
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A chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 70. Chance of precipitation is 30%. |
Sunday
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Sunny, with a high near 88. |
Sunday Night
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Mostly clear, with a low around 71. |
Monday
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Sunny, with a high near 91. |
Monday Night
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Partly cloudy, with a low around 72. |
Tuesday
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Mostly sunny, with a high near 89. |
Forecast from NOAA-NWS
for Morrisville NC.
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Weather Forecast Discussion
454
FXUS62 KRAH 121839
AFDRAH
Area Forecast Discussion
National Weather Service Raleigh NC
239 PM EDT Tue Aug 12 2025
.SYNOPSIS...
A weak surface trough will lead to persistent warm, humid, and rainy
conditions today and tomorrow. An offshore high-pressure system will
help maintain these seasonably warm and humid conditions. Isolated
to scattered showers and storms are expected to continue through the
rest of the week, with lower chances over the weekend.
&&
.NEAR TERM /THROUGH TONIGHT/...
As of 239 PM Tuesday...
* Showers and storms will continue through the afternoon and evening
hours.
* Isolated flash flooding is possible, especially across the urban
areas.
As high pressure off the coast weakens, southeasterly flow will veer
to a southwesterly flow this afternoon and evening. PW values are
still well above normal (2+ inches) and in addition to slow moving
storms and higher rain rates within some of the cells, areas of
flash flooding are possible this afternoon and evening. Earlier this
morning some storms just outside our area had rain rates as high as
2-4 inches/hour, and the environment has not changed much since this
morning. Therefore expecting some slow moving clusters to produce
high rain rates again this afternoon and evening. CAPE values aren`t
impressive, thus severe threat is near zero but a few storms could
produce stronger winds gusts. One thing to note is that the amount
of rain the area has seen over the past few days soil beneath trees
could be softened enough where some trees could fall over due to the
amount of rain, not wind gusts. A short lull from the precip
overnight will be accompanied by low stratus through early morning.
Most models are showing another round of precip entering the area
(mainly across the western piedmont) pre-dawn and spreading across
the region again through Wednesday morning. Temperatures this
afternoon temps should remain in the 80s with overnight lows in the
70s.
&&
.SHORT TERM /WEDNESDAY AND WEDNESDAY NIGHT/...
As of 239 PM Tuesday...
* Marginal risk of flash flooding expected. Numerous showers and
embedded storms are possible Wednesday afternoon.
High pressure will continue to bring warm, moist air to the region
on Wednesday. A few shortwave troughs are expected to move through
the region Wednesday, bringing the risk for scattered to numerous
showers and embedded storms to the region Wednesday afternoon into
evening. PWs will remain above normal (2+ inches), so any slow-
moving or training storms will have the ability to cause flash
flooding. Thus, WPC has the entire CWA under a moderate risk of
flash flooding. The latest HREF LPMM shows areas of 1.5-2.5 inches
of rain in the northern half to central portions of the CWA. High
temperatures should stay in the 80s, with low 80s in the north to
mid-to-upper 80s in the south. Low temperatures overnight should be
in the low-to-mid 70s.
&&
.LONG TERM /THURSDAY THROUGH TUESDAY/...
As of 239 PM Tuesday...
* Marginal risk of flash flooding for the entirety of the CWA on
Thursday and Friday, and the southern Coastal Plain and Sandhills
on Saturday.
* Near normal temperatures expected through the weekend, returning
to slightly above normal to start the work week.
Thursday and Friday, another series of shortwave troughs moving over
the ridge look to bring more unsettled weather to the region. This
will allow for mostly scattered showers and storms both afternoons
and evenings. Due to already moist conditions and elevated PWs (2+
inches), isolated flash flooding will be possible each afternoon.
Thus, WPC has the entire CWA under a marginal risk of flash flooding
Thursday and Friday.
Saturday through Tuesday, drier air is expected to filter into the
region due to upper level ridging and multiple cold fronts that
look to stall or weaken over the mid-atlantic. This will lessen rain
chances for the rest of the extended period. Saturday afternoon and
evening looks to have the best chance of rain over this period, with
isolated to scattered showers and storms possible. WPC has
southeastern portions of the CWA under a moderate risk of flash
flooding where the best chance for showers is located. Isolated
diurnally induced showers may be possible each afternoon Sunday
through Tuesday.
Temperatures should be near normal for the remainder of the work
week. Maximum temperatures are generally expected in the mid-to-
upper 80s each afternoon from Thursday through Sunday, with the
possibility of a few locations in the south reaching low 90s on
Friday. Monday and Tuesday should begin to warm to above normal,
with highs in the upper 80s to low 90s. Lows each night should
generally be in the upper 60s to low 70s.
&&
.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
As of 239 PM Tuesday...
Precip continues across the area this afternoon, although a back
edge is becoming apparent across the Triad and INT/GSO may already
be done with the worst of todays weather. Expecting precip to come
to an end by mid afternoon in the Triad (20Z-21Z), and by 22Z-23Z at
RDU/FAY/RWI. Primary impacts for RDU/RWI/FAY will be in the form of
reduced vsbys as showers/storms move through the terminals. Winds
thus far havent been all that noteworthy with any of the
showers/storms so I will keep gusts out of any TEMPO groups.
There is the potential for some MVFR or lower ceilings late tonight
at all sites and a few hours of MVFR ceilings have been included in
all TAFs. In addition, various members of the HREF indicate precip
moving back into the Triad before daybreak with a brief period of
moderate rain/MVFR vsbys. Conditions should improve area-wide to VFR
by 13Z.
Outlook: Outside of mainly diurnally driven showers and storms and
morning fog/stratus, conditions should be VFR through the TAF
period.
&&
.RAH WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
SYNOPSIS...CA
NEAR TERM...CA
SHORT TERM...Helock
LONG TERM...Helock
AVIATION...Leins
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