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Barnstable County
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Barnstable County Weather, Climate and Best Time to Visit
Data source：Meteostat
Update date：2025-09
Barnstable County year round climate
- 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.
Barnstable County climatological average
Annual average temperature: approx. 51.8°F / Annual rainfall: approx. 1286 mm / Summer humidity: 65%–75% / Rainiest month: September
Barnstable County monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (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
Barnstable County weather for the next seven days
2/3
Tuesday
Sunny
35.8°F/11.3°F
2/4
Wednesday
Sunny
34.7°F/18.3°F
2/5
Thursday
Cloudy
32°F/23.3°F
2/6
Friday
Partly Cloudy
26.8°F/19.8°F
2/7
Saturday
Heavy snow
28.3°F/5.9°F
2/8
Sunday
Light snow
12°F/2.9°F
2/9
Monday
Blowing snow
22.6°F/2.1°F
