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Barnstable County (Hyannis)
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United States weather

Weather in Barnstable County, Massachusetts for December 2026

Your guide to Barnstable County weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 5 snowy days, Barnstable County usually enjoys a light touch of snow in December.

    • Temperatures

  • In general, the average temperature in Barnstable County at the beginning of December is 6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 2.1 °F by the end of December.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
19
Dry days
Average rainy days
7
Rainy days
Average snowy days
5
Snow days
Average temperatures
4°/-1°
Temperatures
Average wind speed
37 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Barnstable County Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
9°
2
Heavy rain at times
10°
3
Moderate snow
7°
4
Overcast
5°
5
Partly cloudy
2°
6
Overcast
5°
7
Mist
4°
8
Partly cloudy
2°
9
Cloudy
2°
10
Moderate or heavy sleet
9°
11
Partly cloudy
6°
12
Sunny
2°
13
Overcast
2°
14
Moderate snow
2°
15
Cloudy
0°
16
Sunny
3°
17
Overcast
7°
18
Cloudy
7°
19
Moderate or heavy rain shower
10°
20
Cloudy
2°
21
Overcast
7°
22
Partly cloudy
1°
23
Moderate snow
2°
24
Overcast
6°
25
Overcast
3°
26
Overcast
-2°
27
Moderate snow
0°
28
Sunny
4°
29
Heavy rain at times
9°
30
Cloudy
1°
31
Cloudy
0°

Temperatures trend during December in Barnstable County

See the weather trend as well as the moving average line

December weather in Barnstable County day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Sunny
Sunny
 9° /1° 23.3 mm 0 cm
Dec. 2 Heavy rain at times
Heavy rain at times
 10° /1° 79.4 mm 0 cm
Dec. 3 Moderate snow
Moderate snow
 7° /2° 42.2 mm 1.5 cm
Dec. 4 Overcast
Overcast
 5° /-1° 0 mm 0 cm
Dec. 5 Partly cloudy
Partly cloudy
 2° /-6° 0.4 mm 0.3 cm
Dec. 6 Overcast
Overcast
 5° /0° 2 mm 0 cm
Dec. 7 Mist
Mist
 4° /0° 0 mm 0 cm
Dec. 8 Partly cloudy
Partly cloudy
 2° /-3° 0 mm 0 cm
Dec. 9 Cloudy
Cloudy
 2° /-3° 0 mm 0 cm
Dec. 10 Moderate or heavy sleet
Moderate or heavy sleet
 9° /3° 22.5 mm 0 cm
Dec. 11 Partly cloudy
Partly cloudy
 6° /-2° 0 mm 0 cm
Dec. 12 Sunny
Sunny
 2° /-2° 0 mm 0 cm
Dec. 13 Overcast
Overcast
 2° /-1° 0 mm 0 cm
Dec. 14 Moderate snow
Moderate snow
 2° /-2° 3.8 mm 2.8 cm
Dec. 15 Cloudy
Cloudy
 0° /-6° 0 mm 0 cm
Dec. 16 Sunny
Sunny
 3° /-3° 0 mm 0 cm
Dec. 17 Overcast
Overcast
 7° /2° 0 mm 0 cm
Dec. 18 Cloudy
Cloudy
 7° /1° 0 mm 0 cm
Dec. 19 Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /3° 56.2 mm 0 cm
Dec. 20 Cloudy
Cloudy
 2° /-1° 0 mm 0 cm
Dec. 21 Overcast
Overcast
 7° /0° 0 mm 0 cm
Dec. 22 Partly cloudy
Partly cloudy
 1° /-2° 0 mm 0 cm
Dec. 23 Moderate snow
Moderate snow
 2° /0° 11.4 mm 3.6 cm
Dec. 24 Overcast
Overcast
 6° /1° 4 mm 0 cm
Dec. 25 Overcast
Overcast
 3° /0° 0 mm 0 cm
Dec. 26 Overcast
Overcast
 -2° /-7° 0 mm 0 cm
Dec. 27 Moderate snow
Moderate snow
 0° /-2° 6 mm 4.3 cm
Dec. 28 Sunny
Sunny
 4° /-3° 0 mm 0 cm
Dec. 29 Heavy rain at times
Heavy rain at times
 9° /3° 21 mm 0 cm
Dec. 30 Cloudy
Cloudy
 1° /-2° 0 mm 0 cm
Dec. 31 Cloudy
Cloudy
 0° /-2° 0 mm 0 cm
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Important Notice
Our weather forecast for Barnstable County in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Barnstable County forecast closer to your planned date for the most up-to-date weather information.
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Barnstable County in December - FAQ

What are the expected maximum and minimum temperatures in Barnstable County during December?

Brace for cold days with temperatures not exceeding 4° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.

How much rainfall should be expected in Barnstable County during December?

Significant rainfall exceeding 272.2 mm is expected in Barnstable County during December, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Barnstable County in December 2026?

Barnstable County experiences an average snowfall of 12.4 cm during December, occurring over 5 days.

What are the typical wind conditions in Barnstable County during December?

The average wind speed in Barnstable County during December is 37 km/h, suggesting breezy to windy conditions, depending on your activities.

Barnstable County snow forecast December 2026

Track daily snowfall levels and discover Barnstable County’s snowy potential this December ❄️
On average, Barnstable County sees 5 snowy days during December, with approximately 12.4 cm of total snowfall.

December rainfall patterns in Barnstable County

Explore the daily rainfall trends and prepare for Barnstable Countys December weather 💧
Typically, Barnstable County has 7 rainy days in December with a total of 272.2 mm of rainfall.
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Hyannis
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Location coordinates Where is Barnstable County?

Get accurate weather forecasts for Barnstable County, located at latitude 41.653 and longitude -70.283. Stay updated with localized weather information tailored for Barnstable County.

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