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As of 19:40 EDT

Weather in South Acton, MA

76°Current weather

South Acton, Saturday, 8 August, 19:40

Rain. Feels like 77°. High 87°, low 71°.

Pressure29.88 inHg
Wind3 mph W
Humidity80%
Visibility6.2 mi
Dew point70°
Sun, 0993° / 71°0Clear
93 °Clear

South Acton, Sunday, 9 August

Clear. High 93°, low 71°.

Pressure29.88 inHg
Wind9.5 mph W
Humidity41%
Visibility6.2 mi
Dew point62°
Mon, 1089° / 69°0.05Light rain
89 °Light rain

South Acton, Monday, 10 August

Light rain. High 89°, low 69°.

Pressure29.94 inHg
Wind7.1 mph SW
Humidity41%
Visibility6.2 mi
Dew point59°
Tue, 1188° / 68°0Mostly clear
88 °Mostly clear

South Acton, Tuesday, 11 August

Mostly clear. High 88°, low 68°.

Pressure29.80 inHg
Wind12.5 mph NW
Humidity37%
Visibility6.2 mi
Dew point56°
Wed, 1269° / 60°0.14Light rain
69 °Light rain

South Acton, Wednesday, 12 August

Light rain. High 69°, low 60°.

Pressure29.80 inHg
Wind5.2 mph NE
Humidity94%
Visibility6.2 mi
Dew point62°
Thu, 1383° / 59°0.13Light rain
83 °Light rain

South Acton, Thursday, 13 August

Light rain. High 83°, low 59°.

Pressure29.74 inHg
Wind9.6 mph SW
Humidity84%
Visibility—
Dew point66°
Fri, 1478° / 54°0Partly cloudy
78 °Partly cloudy

South Acton, Friday, 14 August

Partly cloudy. High 78°, low 54°.

Pressure29.88 inHg
Wind8.3 mph NW
Humidity41%
Visibility—
Dew point44°
Sat, 1577° / 53°0Clear
77 °Clear

South Acton, Saturday, 15 August

Clear. High 77°, low 53°.

Pressure30.09 inHg
Wind8.6 mph NW
Humidity40%
Visibility—
Dew point44°
Sun, 1678° / 53°0Clear
78 °Clear

South Acton, Sunday, 16 August

Clear. High 78°, low 53°.

Pressure30.27 inHg
Wind6.2 mph SW
Humidity34%
Visibility—
Dew point41°
Mon, 1782° / 57°0Overcast
82 °Overcast

South Acton, Monday, 17 August

Overcast. High 82°, low 57°.

Pressure30.18 inHg
Wind9 mph SW
Humidity36%
Visibility—
Dew point46°
Tue, 1872° / 63°0.77Rain
72 °Rain

South Acton, Tuesday, 18 August

Rain. High 72°, low 63°.

Pressure30.03 inHg
Wind7.2 mph S
Humidity99%
Visibility—
Dew point64°
Wed, 1978° / 62°0.04Light rain
78 °Light rain

South Acton, Wednesday, 19 August

Light rain. High 78°, low 62°.

Pressure29.85 inHg
Wind7.2 mph E
Humidity61%
Visibility—
Dew point60°
Thu, 2076° / 60°0.02Light rain
76 °Light rain

South Acton, Thursday, 20 August

Light rain. High 76°, low 60°.

Pressure30.00 inHg
Wind6.8 mph SE
Humidity64%
Visibility—
Dew point58°
Fri, 2175° / 60°0.96Heavy rain
75 °Heavy rain

South Acton, Friday, 21 August

Heavy rain. High 75°, low 60°.

Pressure30.00 inHg
Wind9.5 mph SW
Humidity60%
Visibility—
Dew point58°
Sat, 2275° / 62°0.61Rain
75 °Rain

South Acton, Saturday, 22 August

Rain. High 75°, low 62°.

Pressure29.77 inHg
Wind8.2 mph S
Humidity96%
Visibility—
Dew point67°
Sun, 2371° / 55°0Clear
71 °Clear

South Acton, Sunday, 23 August

Clear. High 71°, low 55°.

Pressure29.80 inHg
Wind14.7 mph NW
Humidity45%
Visibility—
Dew point43°

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 South Acton, 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 South Acton, 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.