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Barnstable County (Hyannis)
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United States weather

Weather in Barnstable County, Massachusetts for August 2026

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

    Temperatures

  • In general, the average temperature in Barnstable County at the beginning of August is 23.6 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 22 °F by the end of August.

    • Rain 🌧️

  • Barnstable County experiences moderate rainfall in August, with an average of 6 rainy days and a total precipitation of 51.7 mm.

    • More

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Average dry days
25
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/18°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Barnstable County Weather August

Move between months or click on a day
July
September
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
19°
2
Partly cloudy
22°
3
Sunny
26°
4
Sunny
29°
5
Cloudy
27°
6
Overcast
21°
7
Fog
21°
8
Mist
23°
9
Partly cloudy
22°
10
Fog
23°
11
Overcast
27°
12
Overcast
27°
13
Overcast
24°
14
Light rain shower
24°
15
Overcast
24°
16
Mist
25°
17
Overcast
27°
18
Overcast
21°
19
Cloudy
22°
20
Overcast
19°
21
Light rain shower
19°
22
Overcast
22°
23
Sunny
24°
24
Overcast
23°
25
Fog
22°
26
Sunny
26°
27
Partly cloudy
22°
28
Overcast
21°
29
Cloudy
22°
30
Partly cloudy
20°
31
Sunny
21°

Temperatures trend during August in Barnstable County

See the weather trend as well as the moving average line

August weather in Barnstable County day by day

Click on a date for more information
July September
Date Weather Temperatures Rain UV More
Aug. 1 Overcast
Overcast
 19° /17° 5.5 mm 2
Aug. 2 Partly cloudy
Partly cloudy
 22° /17° 0 mm 11
Aug. 3 Sunny
Sunny
 26° /18° 0 mm 10
Aug. 4 Sunny
Sunny
 29° /19° 0 mm 10
Aug. 5 Cloudy
Cloudy
 27° /19° 0 mm 11
Aug. 6 Overcast
Overcast
 21° /17° 0 mm 2
Aug. 7 Fog
Fog
 21° /16° 0 mm 5
Aug. 8 Mist
Mist
 23° /16° 0 mm 11
Aug. 9 Partly cloudy
Partly cloudy
 22° /17° 0 mm 8
Aug. 10 Fog
Fog
 23° /16° 0 mm 4
Aug. 11 Overcast
Overcast
 27° /17° 0 mm 5
Aug. 12 Overcast
Overcast
 27° /20° 0 mm 7
Aug. 13 Overcast
Overcast
 24° /19° 0 mm 2
Aug. 14 Light rain shower
Light rain shower
 24° /21° 2.4 mm 2
Aug. 15 Overcast
Overcast
 24° /18° 0 mm 8
Aug. 16 Mist
Mist
 25° /19° 0 mm 10
Aug. 17 Overcast
Overcast
 27° /18° 0 mm 4
Aug. 18 Overcast
Overcast
 21° /17° 8.1 mm 10
Aug. 19 Cloudy
Cloudy
 22° /17° 0 mm 9
Aug. 20 Overcast
Overcast
 19° /17° 6.6 mm 5
Aug. 21 Light rain shower
Light rain shower
 19° /16° 25.3 mm 1
Aug. 22 Overcast
Overcast
 22° /17° 0 mm 5
Aug. 23 Sunny
Sunny
 24° /19° 0 mm 9
Aug. 24 Overcast
Overcast
 23° /19° 0 mm 9
Aug. 25 Fog
Fog
 22° /19° 0 mm 2
Aug. 26 Sunny
Sunny
 26° /19° 0 mm 8
Aug. 27 Partly cloudy
Partly cloudy
 22° /18° 0 mm 8
Aug. 28 Overcast
Overcast
 21° /16° 0 mm 8
Aug. 29 Cloudy
Cloudy
 22° /19° 0 mm 7
Aug. 30 Partly cloudy
Partly cloudy
 20° /17° 3.8 mm 8
Aug. 31 Sunny
Sunny
 21° /16° 0 mm 8
Next
Important Notice
Our weather forecast for Barnstable County in August 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 August - FAQ

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

During August, expect a variety of temperatures with highs around 23° and lows near 18°, suitable for diverse activities and preferences.

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

Moderate rainfall is anticipated in Barnstable County during August, with a total of 51.7 mm spread over approximately 6 days. Considering plans for rainy days is advisable.

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

The average wind speed in Barnstable County during August is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

August rainfall patterns in Barnstable County

Explore the daily rainfall trends and prepare for Barnstable Countys August weather 💧
Typically, Barnstable County has 6 rainy days in August with a total of 51.7 mm of rainfall.

UV exposure in Barnstable County during August

Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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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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