Lancaster, Ohio Weather
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Climate of Lancaster: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), August is usually the hottest month in Lancaster, with average daytime highs around 30°C. January is the coolest, when nights typically fall to about -6°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 36°C, so the seasons feel very different from each other.
The area receives about 1020 mm of rain in a typical year. Most of it falls from April to June, and May is the wettest month at roughly 105 mm.
For outdoor plans and travel, July to October usually offer the most comfortable weather in Lancaster, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 2° | -6° | 68 mm | 86% |
| Feb | 4° | -5° | 68 mm | 85% |
| Mar | 10° | -1° | 88 mm | 81% |
| Apr | 18° | 5° | 100 mm | 78% |
| May | 23° | 11° | 105 mm | 79% |
| Jun | 27° | 16° | 103 mm | 76% |
| Jul | 30° | 18° | 99 mm | 71% |
| Aug | 30° | 18° | 74 mm | 67% |
| Sep | 27° | 13° | 78 mm | 68% |
| Oct | 19° | 7° | 82 mm | 73% |
| Nov | 11° | 1° | 72 mm | 79% |
| Dec | 5° | -3° | 82 mm | 86% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Lancaster. Values describe typical conditions, not a forecast.
About Lancaster weather
Lancaster lies in Ohio's humid continental climate, with warm summers and cold winters typical of the Midwest — about 44 km south-east of Columbus. Expect warm, humid summers (June–August) with highs in the high 20s to low 30s°C. Winter brings cold winters (December–February) with regular snow, especially near Lake Erie. This page shows live, auto-refreshing weather for Lancaster: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/New_York.
Frequently asked questions
Lancaster is about 44 km south-east of Columbus, in Ohio.
Lancaster sees cold winters (December–February) with regular snow, especially near Lake Erie.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Lancaster's exact coordinates. No fixed schedule, the page updates whenever you load it.
August is usually the hottest month in Lancaster, with average daytime highs of about 30°C and nights around 18°C.
The coldest nights come in January, when the average low is about -6°C and daytime highs reach around 2°C. Frost is possible on clear, calm nights.
Lancaster receives about 1020 mm of rain in a typical year. May is the wettest month at roughly 105 mm, and the main rainy period is April to June.
July to October usually offer the most comfortable weather in Lancaster, with mild daytime temperatures and little rain.
In November Lancaster typically sees daytime highs near 11°C and lows near 1°C, with about 72 mm of rain over the month and average humidity around 79%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
The current temperature for Lancaster updates automatically at the top of this page — scroll to the hourly strip below to see how it's expected to change over the day.
Lancaster's day-to-day weather follows the broader pattern of Ohio described above. See the hourly weather forecast or the air quality index for more detail.