Barnstable climate

Barnstable Weather in August

NOAA 1991-2020 normals for Hyannis, 3.9 km from Barnstable

Average highs run from 78°F on August 1 to 75°F on August 31, and lows from 65°F to 61°F. Normal precipitation for the month is 3.24 in over about 8 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Barnstable, in °F, with the record for each date.406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
77°F
Average low
63°F
Precipitation
3.24 in
Record high
95°FAug 2, 2006
Record low
45°FAug 19, 2025
Chance of a freeze
0%
Daylight
14 h 23 min to 13 h 10 min
Cloud cover
53%
Humidity
81%
Dew point
64°F
Wind
11.4 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 178°F65°F91°F 200654°F 201023%0%
Aug 278°F65°F95°F 200652°F 199823%0%
Aug 378°F65°F94°F 200652°F 202523%0%
Aug 478°F65°F88°F 202253°F 202524%0%
Aug 578°F65°F89°F 202253°F 201324%0%
Aug 678°F64°F91°F 202250°F 201324%0%
Aug 778°F64°F90°F 202253°F 201324%0%
Aug 878°F64°F89°F 202251°F 202524%0%
Aug 978°F64°F92°F 200149°F 199924%0%
Aug 1078°F64°F86°F 200147°F 199924%0%
Aug 1178°F64°F89°F 200555°F 200624%0%
Aug 1278°F64°F89°F 202553°F 200624%0%
Aug 1377°F64°F89°F 202151°F 200624%0%
Aug 1477°F64°F92°F 201651°F 200624%0%
Aug 1577°F64°F87°F 201654°F 201024%0%
Aug 1677°F63°F90°F 201853°F 200124%0%
Aug 1777°F63°F90°F 200252°F 200024%0%
Aug 1877°F63°F87°F 200947°F 202524%0%
Aug 1977°F63°F88°F 202245°F 202524%0%
Aug 2077°F63°F86°F 202249°F 199824%0%
Aug 2177°F63°F85°F 200351°F 200724%0%
Aug 2277°F63°F88°F 200550°F 200024%0%
Aug 2376°F62°F83°F 202048°F 200424%0%
Aug 2476°F62°F85°F 202147°F 200424%0%
Aug 2576°F62°F90°F 202145°F 200424%0%
Aug 2676°F62°F89°F 202145°F 200424%0%
Aug 2776°F62°F90°F 202149°F 201923%0%
Aug 2876°F62°F90°F 201849°F 202523%0%
Aug 2976°F61°F91°F 201850°F 200023%0%
Aug 3075°F61°F88°F 201047°F 201423%0%
Aug 3175°F61°F90°F 201048°F 200323%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Barnstable, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 5:36 AM, sunset 7:59 PM
August 31
sunrise 6:06 AM, sunset 7:16 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00193821 (Hyannis), public domain. Records: NOAA GHCN-Daily, station USW00094720, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.