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

Updated: 2:28 am EDT Oct 28, 2026

Wednesday Mostly Sunny Thursday Sunny Friday Sunny Saturday Mostly Cloudy Sunday Chance Light Rain Monday Chance Light Rain Tuesday Light Rain Likely   Hi 74 °F Hi 75 °F Hi 71 °F Hi 68 °F Hi 69 °F Hi 69 °F Hi 70 °F   Overnight Mostly Cloudy Wednesday Night Clear Thursday Night Mostly Clear Friday Night Partly Cloudy Saturday Night Mostly Cloudy Sunday Night Chance Light Rain Monday Night Chance Light Rain   Lo 46 °F Lo 45 °F Lo 51 °F Lo 44 °F Lo 50 °F Lo 51 °F Lo 53 °F

Forecast from NOAA-NWS for Lancaster, OH.

420
FXUS61 KILN 280544
AFDILN

Area Forecast Discussion
National Weather Service Wilmington OH
144 AM EDT Wed Oct 28 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...
1) Dry conditions will persist through the week.

2) The potential for rain returns for the latter part of the weekend
with additional rain chances into next week.

&&

.DISCUSSION...
KEY MESSAGE 1)
Southwest flow aloft will become more zonal by tomorrow. Short wave
ridging will develop into the region late in the week as the flow
buckles in response to a substantial short wave moving into the
Plains.

Low level flow will be southerly until Thursday night when a cold
front slides through the area in response to a short wave passing
well north of the area. Cannot completely rule out an isolated shower
with the front along and north of I-70. While the chance of
measurable rain is non-zero, it is still extremely low and thus the
forecast remains dry. High pressure will then build into the area
Friday and move off to the east on Saturday.

Above normal temperatures will continue, although in the wake of the
front, readings will be not quite as warm. Highs may only be 7 to 10
degrees above normal on Saturday compared to 10 to 15 degrees above
normal today and Thursday.

KEY MESSAGE 2)
Much of the guidance suite has been trending slightly slower and a
bit further south with the track of a short wave that will move
through the region Sunday into Sunday night.(GEFS is the slowest in
this trend.) Still expecting deeper moisture to accompany this, but
forcing may not be very impressive. Even so, this should be the end
of the extended dry period, but rainfall may end up not being very
much, especially across northern counties. We shall see how guidance
solutions evolve through the rest of the week.

This will be the beginning of a more active pattern next week.
Ensemble spread increases, as is usually the case, which smears the
PoP forecast through Tuesday. It will not be wet all of the time, but
the chance of rain will be present through the latter part of the
forecast.

&&

.AVIATION /06Z WEDNESDAY THROUGH SUNDAY/...
Mid and high clouds will continue to move across the area for the
early part of the period. This may be substantial enough to limit fog
potential. So have only included a period of MVFR visibility at KLUK.
Beyond about 15Z, there will be few if any clouds. Winds will come
around to south southwest at 10 kt or less.

OUTLOOK...MVFR ceilings and visibilities possible Sunday afternoon.

&&

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

&&

$$

DISCUSSION...35
AVIATION...35

NWS ILN Office Area Forecast Discussion