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

Updated: 4:00 pm EST Nov 02, 2026

Tuesday Sunny Wednesday Rain Thursday Chance Light Rain then Mostly Sunny Friday Chance Light Rain Saturday Slight Chance Light Rain then Partly Sunny Sunday Partly Sunny then Slight Chance Light Rain Monday Chance Light Rain   Hi 75 °F Hi 71 °F Hi 68 °F Hi 61 °F Hi 56 °F Hi 58 °F Hi 56 °F   Tonight Slight Chance Light Rain then Mostly Cloudy Tuesday Night Partly Cloudy Wednesday Night Rain Thursday Night Partly Cloudy Friday Night Chance Light Rain Saturday Night Mostly Cloudy Sunday Night Slight Chance Light Rain   Lo 52 °F Lo 58 °F Lo 54 °F Lo 48 °F Lo 42 °F Lo 35 °F Lo 35 °F

Forecast from NOAA-NWS for Lancaster, OH.

810
FXUS61 KILN 022303
AFDILN

Area Forecast Discussion
National Weather Service Wilmington OH
603 PM EST Mon Nov 2 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...
1) A more widespread rain is expected on Wednesday as a strong upper
level low pressure center 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 trough axis will move out of the Plains on Tuesday
and into the Great Lakes on Wednesday. As the upper low moves
northeast, a wind shift associated with a surface low underneath it
will pass east through the Ohio Valley. This will bring a good shot
of rain ahead of it with rapid drying in its wake Wednesday evening.

Increasingly strong southerly flow ahead of the wind shift will bring
strong moisture advection beginning late Tuesday night and
continuing into Wednesday. Fairly widespread shower activity will
overspread the region on these strong southerly winds. As
instability is expected to be limited, thunder potential will be on
the low side. Precipitation will then taper off from the west
heading into Wednesday night as the trough axis shifts eastward.

Key message 2)
Overnight Friday has a cold front extending south from a remnant
upper l/w trough, with some light lake effect showers possible with
northerly flow. Typical evolution of a post-frontal atmosphere with
an exiting upper trough or low pressure center would have cold
advection showers over the region. The time this period is over the
CWA looks to be at the overnight minima so there is currently only a
low chance for showers behind it through daybreak Saturday.

Temperatures behind this front will return to normal and stay near
there from Saturday through Monday.

&&

.AVIATION /00Z TUESDAY THROUGH SATURDAY/...
An upper level shortwave trough progresses east of the area this
evening allowing upper level ridging to build into the Ohio Valley.
As this occurs, ceilings are expected to lift/scatter and
visibilities should improve. Once VFR conditions return tonight,
they should persist for the TAF period.

Southerly flow around 10-20 knots persists for the TAF period.

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

&&

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

&&

$$

DISCUSSION...Franks
AVIATION...Campbell

NWS ILN Office Area Forecast Discussion