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Latest PA Weather Summary:

986
AWUS81 KCTP 180844
RWSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-
049>053-056>059-063>066-182245-

Regional Weather Summary
National Weather Service State College PA
444 AM EDT Sun Oct 18 2026

Patchy fog across the river valleys of Pennsylvania this morning
will continue through sunrise before decreasing in coverage. High
pressure will supply clear skies and below-average temperatures
through into Monday morning across the Keystone State. High
temperatures today will warm into the mid-to-upper 50s with some
locations in southwestern Pennsylvania reaching the lower 60s. Low
temperatures tonight into Monday morning will range from the
mid-20s across portions of the northern tier to the mid-to-upper
30s in the Philadelphia metro area.

The aforementioned area of high pressure will bring continued dry
conditions throughout the majority of the week. A slight warming
trend will emerge for the beginning of the week, with high
temperatures trending closer to climatological normals across the
region on Monday. This warming trend will continue throughout the
rest of the week with high temperatures expected to be well-above
climatological normals for the middle of the week.

$$

Latest Forecaster's Discussion:

383
FXUS61 KCTP 181037
AFDCTP

Area Forecast Discussion
National Weather Service State College PA
637 AM EDT Sun Oct 18 2026

.WHAT HAS CHANGED...
* No significant changes

&&

.KEY MESSAGES...
1) Frost/Freeze early Sunday morning ends growing season for
some areas

2) Extended stretch of dry and seasonable weather this week

&&

.DISCUSSION...
KEY MESSAGE 1: Frost/Freeze early Sunday morning ends growing
season for some areas

Keystone Mesonet obs at 3AM/7Z are generally below the freezing
mark across the western and northern Alleghenies (along and NW
of I99 and I80). With several more hours of ideal radiational
cooling, expect min temps around daybreak to bottom in the
25-30F range. We expect the freeze to end the growing season for
some areas. Additional frost/freeze headlines may be needed
over the next few nights where the growing season stays active.

------------------------------------------------------------

KEY MESSAGE 2: Extended stretch of dry and seasonable weather
this week

Persistent high pressure over the Northeast U.S. will provide an
extended stretch of dry and seasonably weather this week. Some
model data suggests the protracted, consecutive day dry spell
could last into the final week of October. This pattern will
feature a string of seasonably warm afternoons with low humidity
followed by chilly nights with areas of frost.

&&

.AVIATION /12Z SUNDAY THROUGH THURSDAY/...
Patchy valley fog continues across portions of central
Pennsylvania this morning with most recent satellite and
observations outlining fog closest to IPT. A brief period of IFR
conditions were briefly observed at IPT; however, general
thinking is lower ceilings will filter out right around 12Z,
maybe slightly after with widespread VFR conditions with high
pressure supplying clear skies and light winds through 12Z
Monday. Widespread frost this morning will be the main aviation
concern at all airfields with renewed chances Monday morning as
well. Based on observations tonight and a similar environmental
set-up over the next 24 hours, have went ahead and highlighted
some potential for fog/lower ceilings in close proximity to IPT
between 10-12Z Monday; however, lower (20-30%) confidence in
restrictions getting to the airfield at this time.

Mon-Thu...Patchy AM fog possible with AM frost likely;
otherwise, VFR conditions will prevail.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
Freeze Warning until 9 AM EDT this morning for PAZ004-006-
010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066.

&&

$$

WHAT HAS CHANGED...Steinbugl
KEY MESSAGES...Steinbugl
DISCUSSION...Steinbugl
AVIATION...Beaty

Latest Public Information Statement:

094
NOUS41 KCTP 170003
PNSCTP
PAZ025-170500-

Public Information Statement
National Weather Service State College PA
803 PM EDT Fri Oct 16 2026

...RECORD HIGH TEMPERATURE IN ALTOONA...

The high temperature at Altoona Blair County Airport today was
83 degrees. This set a new record high temperature for the 16th
of October. The previous record high was 81 degrees set in 1962.

$$