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

Updated: 4:00 pm EDT Oct 21, 2026

Thursday Areas Of Frost then Sunny Friday Sunny Saturday Sunny Sunday Sunny Monday Mostly Sunny Tuesday Partly Sunny Wednesday Partly Sunny   Hi 67 °F Hi 66 °F Hi 69 °F Hi 69 °F Hi 70 °F Hi 68 °F Hi 67 °F   Tonight Mostly Clear then Patchy Fog Thursday Night Mostly Clear Friday Night Mostly Clear Saturday Night Clear Sunday Night Mostly Clear Monday Night Partly Cloudy Tuesday Night Mostly Cloudy   Lo 34 °F Lo 38 °F Lo 39 °F Lo 39 °F Lo 41 °F Lo 45 °F Lo 44 °F

Frost Advisory
 

Forecast from NOAA-NWS for Lancaster, OH.

382
FXUS61 KILN 212313
AFDILN

Area Forecast Discussion
National Weather Service Wilmington OH
713 PM EDT Wed Oct 21 2026

.WHAT HAS CHANGED...
Frost advisory has been issued for portions of central Ohio. Fog has
been added to the forecast for tonight. Afternoon dewpoints have
been decreased through Friday.

&&

.KEY MESSAGES...
1) Fog and frost potential tonight.

2) Dry conditions are expected through at least early next week.

&&

.DISCUSSION...
Key Message 1)

Temperatures are expected to drop down into the 30s and 40s tonight.
The greatest likelihood for temperatures in the middle 30s will be in
central Ohio in the cool spots east of Columbus. Went with a frost
advisory for Licking, Fairfield, and Hocking counties for tonight.

There will also be the potential for some stratus and fog to work
into northern portions of the region again tonight with flow off of
the lake. Have adjusted cloud cover for tonight across these
locations and also have fog in the forecast as well. Have fog mention
in the HWO as well.

Key Message 2)

A continued dry weather pattern is expected. High temperatures over
the next week are expected to be in the 60s and 70s and lows will be
in the 30s and 40s.

&&

.AVIATION /00Z THURSDAY THROUGH MONDAY/...
Limited terminal forecasts to 1 line where possible, though some
overnight fog required a longer forecast given the crossing of
thresholds. In the 1 liners at CVG/CMH, I did not lengthen the
forecast to indicate a drop of 3-4kt tonight, and then add that same
3-4kt tomorrow morning with a 20 degree change in direction
overnight.

Outside of any fog formation, skc will be the continued rule for the
next 24-30 hours.

OUTLOOK...No significant weather expected.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...Frost Advisory from 2 AM to 10 AM EDT Thursday for OHZ056-065-074.
KY...None.
IN...None.

&&

$$

DISCUSSION...08
AVIATION...Franks

NWS ILN Office Area Forecast Discussion