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North Huntingdon, Pennsylvania 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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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: 4:04 pm EDT Jun 22, 2025 |
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Tonight
Mostly Clear
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Monday
Hot
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Monday
Night
Mostly Clear
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Tuesday
Hot
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Tuesday
Night
Partly Cloudy
then Patchy
Fog
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Wednesday
Mostly Sunny
then Chance
T-storms
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Wednesday
Night
Chance
T-storms then
Partly Cloudy
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Thursday
Chance
Showers then
Showers
Likely
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Thursday
Night
Showers
Likely then
Chance
T-storms
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| Lo 72 °F |
Hi 93 °F |
Lo 72 °F |
Hi 93 °F |
Lo 72 °F |
Hi 92 °F |
Lo 71 °F |
Hi 91 °F |
Lo 72 °F |
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Air Quality Alert
Hazardous Weather Outlook
Extreme Heat Warning
Tonight
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Mostly clear, with a low around 72. Southwest wind 5 to 7 mph becoming calm in the evening. |
Monday
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Sunny and hot, with a high near 93. Heat index values as high as 101. Calm wind becoming west around 5 mph in the afternoon. |
Monday Night
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Mostly clear, with a low around 72. Calm wind. |
Tuesday
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Sunny and hot, with a high near 93. Heat index values as high as 100. Calm wind becoming west around 6 mph in the afternoon. |
Tuesday Night
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Patchy fog after 2am. Otherwise, partly cloudy, with a low around 72. Calm wind. |
Wednesday
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A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Wednesday Night
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A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Chance of precipitation is 30%. |
Thursday
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A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny and hot, with a high near 91. Chance of precipitation is 60%. |
Thursday Night
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Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 72. Chance of precipitation is 60%. |
Friday
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Showers likely and possibly a thunderstorm after 2pm. Mostly sunny and hot, with a high near 90. Chance of precipitation is 60%. |
Friday Night
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Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 60%. |
Saturday
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Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Chance of precipitation is 60%. |
Saturday Night
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Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%. |
Sunday
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A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 50%. |
Forecast from NOAA-NWS
for 2 Miles WSW Irwin PA.
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Weather Forecast Discussion
707
FXUS61 KPBZ 221737
AFDPBZ
Area Forecast Discussion
National Weather Service Pittsburgh PA
137 PM EDT Sun Jun 22 2025
.SYNOPSIS...
A dangerous heat wave is expected to impact the region through
mid-week. Near record breaking high temperatures could occur
Monday and Tuesday. Thunderstorm chances may return mid to late
week.
&&
.NEAR TERM /THROUGH TONIGHT/...
KEY MESSAGES:
- Extreme Heat Warning/ Heat Advisory in effect today
- +100F heat index values
---------------------------------------------------------------
No major changes to the forecast as latest hi-res guidance has
maintained good continuity with previous runs, and the ongoing
forecast aligns well with current observations. Ridging will be
the dominant feature, with heat index values expected to
range between 100F to 110F given dewpoints in the mid 70s and
temperatures in the low 90s. A Heat Advisory and Extreme Heat
Warning is in effect through Wednesday.
Areas most likely to reach or exceed 105F heat index include
the Pittsburgh metro--due to urban heat island effect--and the
surrounding valleys.
&&
.SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/...
KEY MESSAGES:
- Extreme heat threat ramping and peaking Monday and Tuesday.
- Potential record high and low temperatures.
- Extreme Heat Warning in effect through Wednesday.
----------------------------------------------------------------
Ensembles exhibit uniform certainty on the strong upper ridge
peaking in intensity across the eastern CONUS on Monday and Tuesday
with a 100+% chance of 500 mb heights >595 dam; probability suggests
heights sit between 596-598 dam with some regression beginning on
Wednesday. Ensemble mean 850 mb temperatures soar to 20-22C. It`s
possible that we do see dew points mix out just a bit in the
afternoons based on forecast soundings, perhaps a bit more on
Tuesday as flow veers more westerly than south of west and lessens
moisture advection. So, it could be more likely that we find a
middle ground on temps/dews with low to mid 90s temps and upper
60s/low 70s dew points. Either way, the overall message is
unaffected... heat indices are very likely to reach the 100-105F
range for several consecutive days. Compounding the effects of
extreme daytime heat will be little relief at night as probability
for lows >70F is 80-90+% Sunday-Wednesday nights.
Record lows and highs may be in jeopardy... see the climate section
for more. It is a good idea to find out more about your local
cooling shelters and consider altering outdoor plans to at least
outside of the afternoon peak heating window.
Convective development should be very low probability through
Tuesday with strong subsidence beneath the core of the ridge.
Afternoon cumulus is likely based on the cu rule and forecast
soundings.
&&
.LONG TERM /WEDNESDAY THROUGH SATURDAY/...
KEY MESSAGES:
- Low predictability showers and storms possible Wednesday - Friday.
- Lower confidence in how long the extreme heat hangs around.
-------------------------------------------------------------------
By mid-week, it looks like we`ll reintroduce the chance for showers
and storms, and possibly even severe weather and flash flooding
again, as the ridge begins to retrograde. Consequentially, the
heat will begin to subside some as well, though by that point
the lower predictability convective development will play a
large role in whether or not heat headlines need extended beyond
Wednesday.
Shower and thunderstorm chances increase Wednesday and become more
likely Thursday and Friday coincident with some subtleties in the
flow/regression of the ridge. Track and strength of the shortwaves
along the ridge will determine where convection is more likely, and
notably how far south it can extend beneath the ridge as it
regresses. Ensemble forecast soundings indicate that plenty of
instability should be available with sufficient DCAPE and weak
effective shear to support slow moving storms with heavy rain and
downburst potential. Should these become more widespread and higher
confidence, MaxTs/AppTs on Thursday and Friday may not be as high as
currently forecast. NCAR`s medium-range machine learning guidance
has increased the probability of severe weather to 30-40% over our
region for the Thursday/Friday timeframe.
&&
.AVIATION /18Z SUNDAY THROUGH FRIDAY/...
VFR is expected through the TAF period under a building ridge of
high pressure. The CU rule and model soundings indicate a few
diurnal cumulus clouds will develop today. A few high clouds
will also cross the area as storms track well to our N-NE.
Outlook...
VFR is expected through Tuesday under a strong ridge. Potential
for restrictions and showers/thunderstorms return Wednesday and
Thursday as the ridge begins to drift south.
&&
.CLIMATE...
Daily record high maximum (left) and daily record high minimum (right)
temperatures will be in jeopardy starting this coming Sunday:
Sunday June 22nd
Pittsburgh, PA: 98F (1988) 75F (1988)
Zanesville, OH: 99F (1988) 71F (1997)
Morgantown, WV: 96F (1923,1988) 73F (1988)
Dubois, PA: 92F (2024) 69F (2024)
Wheeling, WV: 95F (1923, 2024) 72F (2011)
New Philadelphia, OH: 97F (1988) 71F (1997)
Monday June 23rd
Pittsburgh, PA: 95F (1894) 76F (1888)
Zanesville, OH: 96F (1899) 70F (1975)
Morgantown, WV: 95F (1899) 71F (1957)
Dubois, PA: 88F (1966) 66F (2017)
Wheeling, WV: 94F (1948) 69F (2013)
New Philadelphia, OH: 97F (1988) 72F (1948)
Tuesday June 24th
Pittsburgh, PA: 96F (1882) 72F (1884)
Zanesville, OH: 98F (1930) 73F (1937)
Morgantown, WV: 94F (1921, 1949) 76F (1924)
Dubois, PA: 88F (1966) 67F (2013)
Wheeling, WV: 98F (1933, 1943) 73F (1908)
New Philadelphia, OH: 94F (1964) 70F (1975)
Wednesday June 25th
Pittsburgh, PA: 98F (1988) 75F (1952)
Zanesville, OH: 101F (1988) 72F (1952)
Morgantown, WV: 94F (1921, 1952, 1988) 74F (1952)
Dubois, PA: 91F (1966) 67F (2000)
Wheeling, WV: 97F (1943) 75F (1952)
New Philadelphia, OH: 92F (1966, 2002, 2005) 68F (2013)
Thursday June 26th
Pittsburgh, PA: 95F (1966) 75F (1952)
Zanesville, OH: 97F (1952) 73F (1952)
Morgantown, WV: 96F (1952) 74F (1952)
Dubois, PA: 91F (1966) 66F (2000)
Wheeling, WV: 96F (1943, 1952) 73F (1952)
New Philadelphia, OH: 99F (1988) 71F (2022)
&&
.PBZ WATCHES/WARNINGS/ADVISORIES...
PA...Heat Advisory until 8 PM EDT Wednesday for PAZ007>009-013-015-
016-022-031-074-076>078.
Extreme Heat Warning until 8 PM EDT Wednesday for PAZ014-020-
021-029-073-075.
OH...Heat Advisory until 8 PM EDT Wednesday for OHZ039>041-048>050-
057>059-068-069.
WV...Heat Advisory until 8 PM EDT Wednesday for WVZ001>004-012-021-
509>513.
&&
$$
SYNOPSIS...Hefferan
NEAR TERM...Hefferan/88
SHORT TERM...MLB
LONG TERM...MLB
AVIATION...WM/88
CLIMATE...
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