Weatheo

Lancaster Weather by Month

Average temperatures, rainfall and humidity for Lancaster, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Lancaster month looks like before you travel — then check the live Lancaster forecast for the days ahead.

Warmest month

July

36°C average high

Coolest month

January

3°C average low

Wettest month

December

33 mm of rain

Driest month

June

3 mm of rain

Average temperature and rainfall in Lancaster by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January15°C3°C-10°C / 23°C
31 mm
58%14 km/h
February17°C4°C-6°C / 28°C
22 mm
54%16 km/h
March20°C7°C-3°C / 34°C
24 mm
53%18 km/h
April23°C9°C-2°C / 34°C
11 mm
46%21 km/h
May27°C13°C4°C / 38°C
15 mm
43%21 km/h
June32°C17°C8°C / 44°C
3 mm
34%20 km/h
July36°C21°C13°C / 44°C
6 mm
29%20 km/h
August35°C20°C12°C / 42°C
6 mm
32%17 km/h
September32°C17°C3°C / 43°C
5 mm
39%15 km/h
October26°C11°C-1°C / 39°C
6 mm
41%14 km/h
November20°C6°C-6°C / 29°C
18 mm
47%14 km/h
December15°C3°C-7°C / 25°C
33 mm
56%13 km/h

Best time to visit Lancaster

The most comfortable time to visit Lancaster is generally April to May and October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around December, totalling about 182 mm a year.

Travellers who prefer heat should aim for July, when highs average 36°C. December is the month to avoid if rain would spoil your plans — it averages 33 mm, roughly 12× the rainfall of the driest month (June).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Lancaster forecast for what is happening now.

Weather across United States right now