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As of 18:09 EDT

Weather in Chatham, NH

73°Current weather

Chatham, Saturday, 8 August, 18:09

Overcast. Feels like 75°. High 80°, low 68°.

Pressure29.85 inHg
Wind0.8 mph NE
Humidity96%
Visibility6.2 mi
Dew point72°
Sun, 0987° / 66°0Light rain
87 °Light rain

Chatham, Sunday, 9 August

Light rain. High 87°, low 66°.

Pressure29.85 inHg
Wind2.2 mph W
Humidity47%
Visibility6.2 mi
Dew point61°
Mon, 1086° / 63°0.09Rain
86 °Rain

Chatham, Monday, 10 August

Rain. High 86°, low 63°.

Pressure29.94 inHg
Wind7.8 mph S
Humidity38%
Visibility6.2 mi
Dew point54°
Tue, 1180° / 62°0.05Rain
80 °Rain

Chatham, Tuesday, 11 August

Rain. High 80°, low 62°.

Pressure29.77 inHg
Wind8.4 mph NW
Humidity53%
Visibility6.2 mi
Dew point57°
Wed, 1270° / 60°0.21Light rain
70 °Light rain

Chatham, Wednesday, 12 August

Light rain. High 70°, low 60°.

Pressure29.77 inHg
Wind3.6 mph SE
Humidity59%
Visibility6.2 mi
Dew point58°
Thu, 1376° / 51°0.11Light rain
76 °Light rain

Chatham, Thursday, 13 August

Light rain. High 76°, low 51°.

Pressure29.68 inHg
Wind9.5 mph SW
Humidity61%
Visibility—
Dew point57°
Fri, 1468° / 46°0Overcast
68 °Overcast

Chatham, Friday, 14 August

Overcast. High 68°, low 46°.

Pressure29.85 inHg
Wind8.2 mph NW
Humidity67%
Visibility—
Dew point46°
Sat, 1570° / 51°0Clear
70 °Clear

Chatham, Saturday, 15 August

Clear. High 70°, low 51°.

Pressure30.09 inHg
Wind10.6 mph NW
Humidity41%
Visibility—
Dew point40°
Sun, 1675° / 51°0Overcast
75 °Overcast

Chatham, Sunday, 16 August

Overcast. High 75°, low 51°.

Pressure30.24 inHg
Wind6.8 mph NW
Humidity36%
Visibility—
Dew point41°
Mon, 1768° / 56°0Overcast
68 °Overcast

Chatham, Monday, 17 August

Overcast. High 68°, low 56°.

Pressure30.15 inHg
Wind3.7 mph SW
Humidity59%
Visibility—
Dew point52°
Tue, 1871° / 59°0.09Light rain
71 °Light rain

Chatham, Tuesday, 18 August

Light rain. High 71°, low 59°.

Pressure29.97 inHg
Wind6.2 mph S
Humidity86%
Visibility—
Dew point60°
Wed, 1973° / 57°0.09Light rain
73 °Light rain

Chatham, Wednesday, 19 August

Light rain. High 73°, low 57°.

Pressure29.88 inHg
Wind4.9 mph NW
Humidity73%
Visibility—
Dew point58°
Thu, 2073° / 55°0.01Light rain
73 °Light rain

Chatham, Thursday, 20 August

Light rain. High 73°, low 55°.

Pressure30.00 inHg
Wind4.4 mph NW
Humidity50%
Visibility—
Dew point51°
Fri, 2173° / 56°0.16Light rain
73 °Light rain

Chatham, Friday, 21 August

Light rain. High 73°, low 56°.

Pressure29.97 inHg
Wind9.3 mph S
Humidity59%
Visibility—
Dew point56°
Sat, 2271° / 61°0.45Light rain
71 °Light rain

Chatham, Saturday, 22 August

Light rain. High 71°, low 61°.

Pressure29.77 inHg
Wind5 mph N
Humidity98%
Visibility—
Dew point63°
Sun, 2364° / 47°0.02Light rain
64 °Light rain

Chatham, Sunday, 23 August

Light rain. High 64°, low 47°.

Pressure29.71 inHg
Wind14.7 mph NW
Humidity62%
Visibility—
Dew point44°

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, NH 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, NH 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.