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.
Weather in Lancaster County
Annual average temperature: approx. 55.4°F / Annual rainfall: approx. 1380 mm / Summer humidity: 65%–75% / Rainiest month: September
Lancaster County weather by month
Month
Temperature (°F)
Rainfall (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
7-day weather forecast for Lancaster County
10/31
Saturday
Partly Cloudy
57.4°F/41.2°F
11/1
Sunday
Overcast
60.2°F/41°F
11/2
Monday
Overcast
64.2°F/44.2°F
11/3
Tuesday
Overcast
67.6°F/46°F
11/4
Wednesday
Sunny
68.8°F/49.5°F
11/5
Thursday
Mist
67°F/53.4°F
11/6
Friday
Patchy rain nearby
69.3°F/59.4°F
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