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

Updated: 4:00 am EST Nov 03, 2026

Today Sunny Wednesday Rain Showers Thursday Chance Rain Showers then Mostly Sunny Friday Partly Sunny then Slight Chance Light Rain Saturday Slight Chance Light Rain Sunday Partly Sunny then Slight Chance Light Rain Monday Slight Chance Light Rain   Hi 76 °F Hi 70 °F Hi 69 °F Hi 66 °F Hi 58 °F Hi 57 °F Hi 55 °F     Tonight Mostly Clear Wednesday Night Rain Showers Thursday Night Partly Cloudy Friday Night Slight Chance Light Rain Saturday Night Slight Chance Light Rain then Mostly Cloudy Sunday Night Slight Chance Light Rain Monday Night Slight Chance Light Rain then Partly Cloudy   Lo 58 °F Lo 55 °F Lo 47 °F Lo 43 °F Lo 38 °F Lo 36 °F Lo 35 °F

Forecast from NOAA-NWS for Lancaster, OH.

241
FXUS61 KILN 031116
AFDILN

Area Forecast Discussion
National Weather Service Wilmington OH
616 AM EST Tue Nov 3 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...
1) Widespread showers and a few thunderstorms are expected on
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 across the
upper Mississippi Valley and western Great Lakes tonight into
Wednesday. As it does, an embedded mid level short wave rotating
around the broader low will lift northeast into the mid Ohio Valley.
This will be accompanied by increasing southerly flow and a
developing 40-50 knot 850 mb jet that will shift east across our
area late tonight into Wednesday. Good moisture transport will advect
into our area with PWs pushing up to around 1.5 inches or so through
the day on Wednesday. This should all lead to widespread showers
developing later tonight across our southwest/west and then
overspreading the rest of our area through Wednesday morning. Pcpn
will the continue through the afternoon before tapering off from the
west Wednesday night. Some weak instabilities will also be pulled up
into our area so 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 also be
possible given the increasing PWs, 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 how dry we have been the last few weeks, think
the overall flood threat will remain on the low side.

Key message 2)
We will transition to more of a west to northwest flow pattern aloft
later this week and 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 Friday through Sunday.
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 /12Z TUESDAY THROUGH SATURDAY/...
Skies have cleared across the area this morning and this has led to
some patchy river valley fog. This may affect KLUK early in the TAF
period. Otherwise, VFR conditions will prevail into this evening
with mainly just an increase in some mid and high level clouds ahead
of an approaching upper level disturbance. Increasing southerly flow
ahead of this could lead to some marginal LLWS later tonight/early
Wednesday. It will also result in a developing chance for showers
from the southwest late tonight with showers then continuing into the
day on Wednesday. It will be tough to rule out an isolated
thunderstorm too, but chances appear low enough to leave any mention
out of the TAFs. As the pcpn moves in later tonight into early
Wednesday, cigs and vsbys will drop into MVFR to locally IFR
category.

Southerly winds will gust to around 20 knots or so at times through
the TAF period.

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

&&

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

&&

$$

DISCUSSION...JGL
AVIATION...JGL

NWS ILN Office Area Forecast Discussion