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North Huntingdon, Pennsylvania 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for 2 Miles WSW Irwin PA
National Weather Service Forecast for: 2 Miles WSW Irwin PA
Issued by: National Weather Service Pittsburgh, PA
Updated: 3:13 pm EDT Aug 12, 2025
 
This
Afternoon
This Afternoon: Sunny and hot, with a high near 90. South wind around 9 mph.
Hot

Tonight

Tonight: Partly cloudy, with a low around 69. South wind 3 to 5 mph.
Partly Cloudy

Wednesday

Wednesday: Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 5pm, then showers and thunderstorms likely after 5pm.  High near 84. West wind around 6 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Scattered
T-storms then
T-storms
Wednesday
Night
Wednesday Night: Showers and thunderstorms before 5am, then scattered showers.  Low around 68. Light and variable wind.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
T-storms then
Showers
Likely
Thursday

Thursday: Scattered showers, with thunderstorms also possible after 8am.  Partly sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms
Thursday
Night
Thursday Night: Patchy fog after 3am.  Otherwise, mostly clear, with a low around 62.
Partly Cloudy
then Patchy
Fog
Friday

Friday: Patchy fog before 9am.  Otherwise, sunny, with a high near 87.
Patchy Fog
then Sunny
Friday
Night
Friday Night: Patchy fog after 4am.  Otherwise, mostly clear, with a low around 65.
Mostly Clear
then Patchy
Fog
Saturday

Saturday: Patchy fog before 8am.  Otherwise, sunny, with a high near 89.
Patchy Fog
then Sunny
Hi 90 °F Lo 69 °F Hi 84 °F Lo 68 °F Hi 84 °F Lo 62 °F Hi 87 °F Lo 65 °F Hi 89 °F

Hazardous Weather Outlook
 

This Afternoon
 
Sunny and hot, with a high near 90. South wind around 9 mph.
Tonight
 
Partly cloudy, with a low around 69. South wind 3 to 5 mph.
Wednesday
 
Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 5pm, then showers and thunderstorms likely after 5pm. High near 84. West wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
Showers and thunderstorms before 5am, then scattered showers. Low around 68. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
 
Scattered showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
 
Patchy fog after 3am. Otherwise, mostly clear, with a low around 62.
Friday
 
Patchy fog before 9am. Otherwise, sunny, with a high near 87.
Friday Night
 
Patchy fog after 4am. Otherwise, mostly clear, with a low around 65.
Saturday
 
Patchy fog before 8am. Otherwise, sunny, with a high near 89.
Saturday Night
 
Patchy fog after 3am. Otherwise, mostly clear, with a low around 66.
Sunday
 
Patchy fog. Otherwise, mostly sunny and hot, with a high near 91.
Sunday Night
 
Partly cloudy, with a low around 69.
Monday
 
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for 2 Miles WSW Irwin PA.

Weather Forecast Discussion
267
FXUS61 KPBZ 121826
AFDPBZ

Area Forecast Discussion
National Weather Service Pittsburgh PA
226 PM EDT Tue Aug 12 2025

.SYNOPSIS...
A cold front crossing the Great Lakes tonight will push across
the Upper Ohio River Valley Wednesday and Wednesday night.
Showers and thunderstorms will increase late tonight over Ohio
and then spread across the area Wednesday and Wednesday evening.
As the front pushes south of area Thursday a few showers are
possible mainly south of Pittsburgh. High pressure will build in
Friday bringing quiet and less humid weather.


&&

.NEAR TERM /THROUGH TONIGHT/...
KEY MESSAGES:

- Thunderstorms should increase in coverage late tonight over
  Ohio portion of area.
---------------------------------------------------------------

Increasingly moist southwest flow tonight will transport rather
high precipitable water values of 1.75-2.00" into Ohio area
after midnight. This higher moisture content can be seen in low
level water vapor channel with strong dry pocket over western PA
and surge of moisture crossing into western half of Ohio.

RAP shows increasing instability with this feature and along
with modest moisture transport and warm advection in 850-700 mb
layer expect an increasing in shower and thunderstorm activity
despite loss of diurnal heating. Upper trough does cross area
late tonight with 20-30 meter height falls so forcing will be
maximized by the end of the night.

Given the forcing there is a marginal risk for excessive
rainfall per WPC and a couple Ohio Counties could pick up 1-2".

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...
KEY MESSAGES:

- Shower and thunderstorms spread across the eastern part of the
  forecast area through Wednesday, and linger Thursday in the
  south
- Marginal Risk of Excessive Rainfall across area
- Dry weather returns Thursday night
----------------------------------------------------------------

Evolution of thunderstorms Wednesday will be complicated by
ongoing convection with short wave trough early in the morning.
That activity will likely move east and/or dissipate by midday
and partial clearing and diurnal destabilization will likely
result in renewed storms by early/mid afternoon.

With Precipitable Water Values of 1.75-2.00", localized heavy
rainfall is expected with a few locations picking up a quick
1-2". Dry antecedent conditions and relatively low point
probabilities preclude issuance of flash flood watch.

NBM 72 hour PQPF indicates lower end amounts (10th to 25th
percentile) of about 0.25", and higher end amounts (75th
percentile) of 1.00". Maximum QPF is near 2", and amounts near
or above that value would likely occur in just a couple of
locations.

Heights build over the Great Lakes and Ohio Valley on Thursday,
but lingering moisture over the south could result in another
round of diurnal showers.

&&

.LONG TERM /FRIDAY THROUGH TUESDAY/...
KEY MESSAGES:

- Dry weather to continue much of the period
- Hot weather returns Sunday
- Thunderstorms can`t be ruled out Sunday and Monday with warm
  and humid northwest flow pattern.
- Uncertainty increases by Tuesday in evolution of next trough
  digging into Great Lakes area.
-------------------------------------------------------------------

Ensemble Guidance is confident in a strong upper High building
over the Middle Mississippi Valley Friday and Saturday and
remaining in place through Monday. WNW flow aloft with high
heights will be mainly dry but vulnerable to convective
complexes riding the edge of the capping ridge and into Great
Lakes and Upper Ohio Valley. Rather low confidence on this for
now but something to keep an eye out for.

Hot and humid weather returns by Sunday and Heat Index values
well into the 90s expected.

Confidence drops by Tuesday on precipitation chances as the key
question will be the interaction of mid latitude digging trough
with recurving Hurricane Erin. Ensemble uncertainty in this
evolution is high, ranging from little impact from this trough
over Upper Ohio Valley to a potential significant rain event.
While ensembles have been mostly confident that Erin recurves
well out to sea, the amplitude of the digging trough could be
significant enough to generate much needed rainfall for a
recently dry Upper Ohio River Valley area.

&&

.AVIATION /18Z TUESDAY THROUGH SATURDAY/...
As expected a SCT VFR deck has setup across the region near
5kft. Spotty afternoon and evening showers remain possible
across the region, especially near the terrain. Dry air in a
warm layer near 750mb will limit widespread convection and has
lowered probabilities of storms across the region leading to the
removal of PROB30s for our eastern ports.

High res modeling and ensemble probabilities highlight the
possibility of lingering convection moving into the region late
tonight from the west. PROB30s have been included at many ports due
to this possibility. Restrictions are not expected to be widespread
in this activity.

After this morning activity another round of storms seems likely
along a sagging weak cold front as it crosses the region tomorrow
afternoon. MVFR restrictions for CIGs seem likely as moisture rises
ahead of the front but the degree of drops may be slower and weaker
than models indicate with a relatively dry start and top down
moistening. Storms can bring gusty winds and heavy downpours.

Outlook... A downward trend in rain potential is favored to end the
week as high pressure develops near New England.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
PA...None.
OH...None.
WV...None.

&&

$$

SYNOPSIS...Craven
NEAR TERM...Craven
SHORT TERM...Craven
LONG TERM...Craven
AVIATION...AK
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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