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Barnstable County
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Best time to visit Barnstable County
Data source：Meteostat
Last updated：2025-09
Weather in Barnstable County throughout the year
- Spring (March–May): Average 40–55°F, mild and rainy with occasional showers. March and April experience more rainfall. Common activities: Coastal walks, flower viewing. Suggested attire: Light jacket, comfortable long pants or skirt, rain gear.
- Summer (June–August): Average 65–73°F, warm and humid with occasional showers. July is the warmest month. Common activities: Beach activities, water sports, outdoor picnics. Suggested attire: Light and breathable short-sleeved clothing, shorts, swimwear, sun hat.
- Autumn (September–November): Average 55–64°F, comfortable and pleasant. September has the most rainfall. Common activities: Maple leaf viewing, hiking, seaside strolls. Suggested attire: Comfortable long-sleeved shirts, light jacket, comfortable pants.
- Winter (December–February): Average 34–37°F, cold and dry with low probability of snowfall. December and January experience more rainfall. Common activities: Indoor activities, museum visits. Suggested attire: Warm coat, hat, scarf, gloves.
Weather in Barnstable County
Annual average temperature: approx. 51.8°F / Annual rainfall: approx. 1286 mm / Summer humidity: 65%–75% / Rainiest month: September
Barnstable County weather by month
Month
Temperature (°F)
Rainfall (mm)
January
34.5°F
118
February
34.9°F
55.7
March
40.8°F
125
April
47.8°F
133
May
55.9°F
84
June
65.1°F
52.7
July
73.9°F
119.7
August
71.4°F
129.3
September
64.8°F
168.7
October
55.4°F
76
November
46.2°F
80
December
37.9°F
144.3
7-day weather forecast for Barnstable County
11/13
Friday
Light drizzle
46.2°F/40.7°F
11/14
Saturday
Partly Cloudy
46.7°F/35.3°F
11/15
Sunday
Sunny
46.9°F/35.3°F
11/16
Monday
Sunny
47.8°F/35.3°F
11/17
Tuesday
Sunny
52°F/33.2°F
11/18
Wednesday
Sunny
57.5°F/37.6°F
11/19
Thursday
Sunny
59.9°F/40.6°F
