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As of 06:49 EDT

Weather in Hyannis Port, MA

75°Current weather

Hyannis Port, Sunday, 9 August, 06:49

Clear. Feels like 76°. High 91°, low 72°.

Pressure29.91 inHg
Wind9 mph W
Humidity93%
Visibility6.2 mi
Dew point73°
Mon, 1087° / 70°0Clear
87 °Clear

Hyannis Port, Monday, 10 August

Clear. High 87°, low 70°.

Pressure29.97 inHg
Wind6.8 mph S
Humidity55%
Visibility6.2 mi
Dew point63°
Tue, 1182° / 73°0.07Light rain
82 °Light rain

Hyannis Port, Tuesday, 11 August

Light rain. High 82°, low 73°.

Pressure29.77 inHg
Wind8.8 mph W
Humidity69%
Visibility6.2 mi
Dew point67°
Wed, 1277° / 70°0.03Light rain
77 °Light rain

Hyannis Port, Wednesday, 12 August

Light rain. High 77°, low 70°.

Pressure29.77 inHg
Wind4.8 mph SE
Humidity50%
Visibility6.2 mi
Dew point58°
Thu, 1377° / 70°0.34Rain
77 °Rain

Hyannis Port, Thursday, 13 August

Rain. High 77°, low 70°.

Pressure29.68 inHg
Wind18 mph W
Humidity90%
Visibility—
Dew point69°
Fri, 1475° / 63°0Clear
75 °Clear

Hyannis Port, Friday, 14 August

Clear. High 75°, low 63°.

Pressure29.85 inHg
Wind19.9 mph NW
Humidity50%
Visibility—
Dew point49°
Sat, 1574° / 61°0Clear
74 °Clear

Hyannis Port, Saturday, 15 August

Clear. High 74°, low 61°.

Pressure29.94 inHg
Wind18.3 mph W
Humidity49%
Visibility—
Dew point49°
Sun, 1673° / 65°0Overcast
73 °Overcast

Hyannis Port, Sunday, 16 August

Overcast. High 73°, low 65°.

Pressure30.09 inHg
Wind12.1 mph NW
Humidity54%
Visibility—
Dew point53°
Mon, 1777° / 67°0.08Light rain
77 °Light rain

Hyannis Port, Monday, 17 August

Light rain. High 77°, low 67°.

Pressure30.03 inHg
Wind17.2 mph S
Humidity51%
Visibility—
Dew point56°
Tue, 1876° / 67°0.18Light rain
76 °Light rain

Hyannis Port, Tuesday, 18 August

Light rain. High 76°, low 67°.

Pressure30.03 inHg
Wind10 mph SW
Humidity58%
Visibility—
Dew point57°
Wed, 1976° / 68°0.01Light rain
76 °Light rain

Hyannis Port, Wednesday, 19 August

Light rain. High 76°, low 68°.

Pressure30.15 inHg
Wind7.9 mph W
Humidity66%
Visibility—
Dew point61°
Thu, 2080° / 70°0Clear
80 °Clear

Hyannis Port, Thursday, 20 August

Clear. High 80°, low 70°.

Pressure30.09 inHg
Wind12.6 mph SW
Humidity65%
Visibility—
Dew point64°
Fri, 2180° / 73°0Overcast
80 °Overcast

Hyannis Port, Friday, 21 August

Overcast. High 80°, low 73°.

Pressure29.94 inHg
Wind18.8 mph SW
Humidity74%
Visibility—
Dew point69°
Sat, 2281° / 74°0.17Light rain
81 °Light rain

Hyannis Port, Saturday, 22 August

Light rain. High 81°, low 74°.

Pressure29.88 inHg
Wind16.1 mph SW
Humidity79%
Visibility—
Dew point72°
Sun, 2375° / 70°0Overcast
75 °Overcast

Hyannis Port, Sunday, 23 August

Overcast. High 75°, low 70°.

Pressure29.94 inHg
Wind11.3 mph N
Humidity88%
Visibility—
Dew point69°
Mon, 2474° / 67°0.01Light rain
74 °Light rain

Hyannis Port, Monday, 24 August

Light rain. High 74°, low 67°.

Pressure30.03 inHg
Wind13 mph NE
Humidity78%
Visibility—
Dew point66°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Hyannis Port, MA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Hyannis Port, MA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.