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Lancaster County

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Lancaster County Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Lancaster County year round climate

  • Spring (March–May): 45–64°F on average, mild climate, but occasional showers. Temperatures gradually rise from March to April. Common activities: Outdoor walks, farm visits, flower viewing. Suggested clothing: Light jacket, long-sleeved shirts, comfortable shoes.
  • Summer (June–August): 72–78°F on average, hot and humid, with occasional thunderstorms. Common activities: Swimming, camping, farm picking. Suggested clothing: Breathable short-sleeved clothing, shorts, sun hat.
  • Autumn (September–November): 46–67°F on average, pleasant climate, but more rainfall, especially in September. Common activities: Maple leaf viewing, pumpkin harvesting, outdoor picnics. Suggested clothing: Comfortable long-sleeved shirts, light jacket, comfortable shoes.
  • Winter (December–February): 34–38°F on average, cold, little snowfall, but possible icy conditions. Common activities: Indoor visits, museums, enjoying hot drinks. Suggested clothing: Warm coat, hat, scarf, gloves.

Lancaster County climatological average

Annual average temperature: approx. 55.4°F / Annual rainfall: approx. 1380 mm / Summer humidity: 65%–75% / Rainiest month: September

Lancaster County monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
34.9°F
117
February
38.8°F
56.1
March
45.3°F
111.9
April
54.9°F
140.5
May
64.2°F
88.5
June
72.3°F
131.9
July
78.1°F
134.5
August
75.2°F
102.2
September
67.6°F
175.5
October
56.3°F
85.1
November
46.6°F
72.1
December
37.6°F
164.7

Lancaster County weather for the next seven days

12/10
Wednesday
Patchy rain nearby
51.8°F/22.6°F
12/11
Thursday
Sunny
36.5°F/26.6°F
12/12
Friday
Overcast
35.8°F/24.3°F
12/13
Saturday
Patchy rain nearby
40.1°F/26.6°F
12/14
Sunday
Moderate snow
28.7°F/15.8°F
12/15
Monday
Cloudy
20.5°F/9.5°F
12/16
Tuesday
Partly Cloudy
26.4°F/9.4°F