National Weather Service Forecast for: Lancaster, OH Issued by: National Weather Service Wilmington, OH

Updated: 4:00 pm EST Nov 03, 2026

Wednesday Showers And T-Storms Thursday Mostly Sunny Friday Partly Sunny Saturday Slight Chance Light Rain Sunday Mostly Sunny Monday Slight Chance Light Rain Tuesday Mostly Sunny   Hi 68 °F Hi 68 °F Hi 63 °F Hi 56 °F Hi 57 °F Hi 60 °F Hi 63 °F   Tonight Partly Cloudy Wednesday Night Showers And T-Storms Thursday Night Partly Cloudy Friday Night Partly Cloudy then Slight Chance Light Rain Saturday Night Partly Cloudy Sunday Night Partly Cloudy then Slight Chance Light Rain Monday Night Slight Chance Light Rain then Mostly Clear   Lo 59 °F Lo 54 °F Lo 45 °F Lo 40 °F Lo 34 °F Lo 33 °F Lo 35 °F

Forecast from NOAA-NWS for Lancaster, OH.

185
FXUS61 KILN 032326
AFDILN

Area Forecast Discussion
National Weather Service Wilmington OH
626 PM EST Tue Nov 3 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...
1) Widespread showers and a few thunderstorms are expected on
to develop overnight and continue Wednesday as an upper level low
pressure system moves northeast through the Upper Midwest.

2) An upper level trough will settle into the Great Lakes region
late this week and over the weekend. This will lead to more
seasonable temperatures and occasional chances for showers.

&&

.DISCUSSION...
KEY MESSAGE 1)

An upper level low pressure system will lift northeast from the
Central Plains across the upper Mississippi Valley and western Great
Lakes tonight into Wednesday. As it does, an embedded mid level
short wave rotating around the base of the low will lift northeast
into the Ohio Valley. In response to this - a 45-50 KT 8H low level
jet will shift east across ILN/s area late tonight into Wednesday.

Favorable moisture transport will advect into our area with PWATs
increasing to around 1.5 inches. This leads to widespread showers
developing later tonight across ILN/s southwest/west and then
overspreading the rest of our area through Wednesday morning.

Showers will the continue through the afternoon before tapering off
from the west. Very marginal instability develops on Wednesday,
so a a few embedded thunderstorms will be possible, especially
across southern portions of our area. Deep layer shear will be
strong, but any severe threat should be limited by the lack of better
instabilities. Locally heavy rainfall will be possible given the
increasing moisture, with the heaviest rainfall amounts expected
mainly along and south of the Ohio River. Storm total amounts of 1 to
1.5 inches will be possible in spots across our southwest, but given
the recent dry stretch of weather, the overall flood threat will
remain low.


Key message 2)

A mid and upper level trof will develop into a cut off low over the
Great Lakes this weekend. A secondary surface cold front will drop
thru the area Friday - leading to a chance for showers and cooler
temperatures. This low will be followed by a northwest flow pattern
aloft into early next week. A series of mid level short waves
dropping down across the Great Lakes will likely lead to occasional
lower end chances for showers. Temperatures will trend back to
seasonable readings with highs over the weekend and into early next
week generally in the 55 to 60 degree range.

&&

.AVIATION /00Z WEDNESDAY THROUGH SUNDAY/...
VFR conditions will prevail into this evening with mainly just an
increase in some mid and high level clouds ahead of an approaching
disturbance. Increasing southerly flow ahead of this could lead to
some marginal LLWS later tonight/early Wednesday.

Showers will move in from the southwest late tonight, with rounds of
rain continuing through the day on Wednesday. Isolated embedded
thunderstorms are possible during the daytime hours, though did not
include in the TAFs at this time, since the chance is very low.

As the showers move in later tonight into early Wednesday, CIGs will
drop to MVFR and IFR, while VSBYs will drop to MVFR. Conditions will
slowly improve late tomorrow evening, and have included this in the
extended KCVG TAF.

Southerly winds will increase during the overnight hours, sustained
around 15 knots at times on Wednesday, gusting to 30 knots possible
during the daytime hours.

OUTLOOK...MVFR to IFR cigs and vsbys possible at times into
Thursday.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...None.
KY...None.
IN...None.

&&

$$

DISCUSSION...AR
AVIATION...Aiena/AR

NWS ILN Office Area Forecast Discussion