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City of Lancaster, OHLancaster, OH Weather Forecast
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Lancaster Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
 |  | |  |  |  | | |  | |  | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Partly Cloudy | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of T-Storm |
| Lo: 70°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 85°FHi: 29°C |
| POP: 50% | POP: 50% | POP: 50% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 213 PM EDT Fri Sep 04 2026 
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Issued: 229 PM EDT Fri Sep 4 2026
Key Messages
1) Heat headlines continue into the evening for much of the region. Hot and muggy conditions continue again on Saturday, though will likely fall below headline criteria.
2) Strong to severe storms will be possible at times through the overnight into Saturday. Any storms that develop may produce locally heavy rainfall.
Discussion
... KEY MESSAGE 1) As expected, the influence of thunderstorms and their outflow boundaries have largely kept higher heat indices away from a large portion of c...