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As of 16:33 EDT

Weather in Chatham, MA

84°Current weather

Chatham, Saturday, 8 August, 16:33

Clear. Feels like 91°. High 87°, low 72°.

Pressure29.88 inHg
Wind19.7 mph SW
Humidity75%
Visibility6.2 mi
Dew point75°
Sun, 0993° / 72°0Clear
93 °Clear

Chatham, Sunday, 9 August

Clear. High 93°, low 72°.

Pressure29.91 inHg
Wind6.2 mph SW
Humidity69%
Visibility6.2 mi
Dew point68°
Mon, 1080° / 71°0.01Light rain
80 °Light rain

Chatham, Monday, 10 August

Light rain. High 80°, low 71°.

Pressure30.00 inHg
Wind7.7 mph S
Humidity65%
Visibility6.2 mi
Dew point64°
Tue, 1180° / 74°0Overcast
80 °Overcast

Chatham, Tuesday, 11 August

Overcast. High 80°, low 74°.

Pressure29.80 inHg
Wind10.1 mph W
Humidity61%
Visibility6.2 mi
Dew point64°
Wed, 1273° / 64°0.15Light rain
73 °Light rain

Chatham, Wednesday, 12 August

Light rain. High 73°, low 64°.

Pressure29.74 inHg
Wind20.8 mph E
Humidity89%
Visibility6.2 mi
Dew point62°
Thu, 1378° / 64°0.09Light rain
78 °Light rain

Chatham, Thursday, 13 August

Light rain. High 78°, low 64°.

Pressure29.74 inHg
Wind17.3 mph NW
Humidity77%
Visibility—
Dew point64°
Fri, 1473° / 64°0Overcast
73 °Overcast

Chatham, Friday, 14 August

Overcast. High 73°, low 64°.

Pressure29.91 inHg
Wind15.2 mph SW
Humidity54%
Visibility—
Dew point49°
Sat, 1569° / 66°0Clear
69 °Clear

Chatham, Saturday, 15 August

Clear. High 69°, low 66°.

Pressure30.09 inHg
Wind13.2 mph N
Humidity67%
Visibility—
Dew point56°
Sun, 1670° / 67°0.02Light rain
70 °Light rain

Chatham, Sunday, 16 August

Light rain. High 70°, low 67°.

Pressure30.27 inHg
Wind10.2 mph SW
Humidity55%
Visibility—
Dew point53°
Mon, 1774° / 67°0Overcast
74 °Overcast

Chatham, Monday, 17 August

Overcast. High 74°, low 67°.

Pressure30.24 inHg
Wind15.7 mph S
Humidity55%
Visibility—
Dew point56°
Tue, 1874° / 70°0.58Rain
74 °Rain

Chatham, Tuesday, 18 August

Rain. High 74°, low 70°.

Pressure30.06 inHg
Wind19.9 mph SW
Humidity68%
Visibility—
Dew point63°
Wed, 1972° / 67°0.37Rain
72 °Rain

Chatham, Wednesday, 19 August

Rain. High 72°, low 67°.

Pressure29.83 inHg
Wind16.2 mph SW
Humidity85%
Visibility—
Dew point67°
Thu, 2071° / 67°0Overcast
71 °Overcast

Chatham, Thursday, 20 August

Overcast. High 71°, low 67°.

Pressure29.97 inHg
Wind10.3 mph NE
Humidity76%
Visibility—
Dew point62°
Fri, 2171° / 66°0.35Rain
71 °Rain

Chatham, Friday, 21 August

Rain. High 71°, low 66°.

Pressure30.03 inHg
Wind17.9 mph SE
Humidity59%
Visibility—
Dew point55°
Sat, 2275° / 68°0.76Rain
75 °Rain

Chatham, Saturday, 22 August

Rain. High 75°, low 68°.

Pressure29.80 inHg
Wind15.7 mph SE
Humidity91%
Visibility—
Dew point67°
Sun, 2370° / 64°0Partly cloudy
70 °Partly cloudy

Chatham, Sunday, 23 August

Partly cloudy. High 70°, low 64°.

Pressure29.80 inHg
Wind19.8 mph NW
Humidity55%
Visibility—
Dew point50°

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 Chatham, 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 Chatham, 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.