Monthly outlook for South Acton, MA: average high 57°, average low 43°. That is 3.8° above the climate normal for November. Precipitation is expected on 6 days (about 2.3 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 4 November (75.2°), the coolest 14 November (30.8°).
57°/43°
Average high / low
+3.8°
Above normal
6 / 5
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
3 November – 12 November
60.6°
51.9°
+4.8°
13 November – 22 November
51.1°
46.4°
+2.6°
23 November – 2 December
at normal
44.1°
—
November records over 66 years
76.1°6 November 2024All-time high
3°24 November 1989All-time low
Climate normals and records are computed from the nearest reference point — Groton (12 mi).
Wed, 0475° / 51°0
75 °
South Acton, Wednesday, 4 November
Partly cloudy. High 75°, low 51°.
Pressure30.06 inHg
Wind9 mph SW
Humidity46%
Visibility6.2 mi
Dew point51°
Thu, 0572° / 57°0
72 °
South Acton, Thursday, 5 November
Overcast. High 72°, low 57°.
Pressure29.91 inHg
Wind13.9 mph SW
Humidity65%
Visibility6.2 mi
Dew point59°
Fri, 0668° / 60°0.88
68 °
South Acton, Friday, 6 November
Heavy rain. High 68°, low 60°.
Pressure29.88 inHg
Wind4.7 mph SW
Humidity79%
Visibility6.2 mi
Dew point62°
Sat, 0760° / 54°0.32
60 °
South Acton, Saturday, 7 November
Rain. High 60°, low 54°.
Pressure29.80 inHg
Wind7.4 mph N
Humidity86%
Visibility6.2 mi
Dew point55°
Sun, 0861° / 49°0.11
61 °
South Acton, Sunday, 8 November
Light rain. High 61°, low 49°.
Pressure29.74 inHg
Wind9.9 mph NW
Humidity67%
Visibility—
Dew point44°
Mon, 0950° / 38°0
50 °
South Acton, Monday, 9 November
Clear. High 50°, low 38°.
Pressure29.83 inHg
Wind10.9 mph W
Humidity59%
Visibility—
Dew point35°
Tue, 1055° / 33°0
55 °
South Acton, Tuesday, 10 November
Mostly clear. High 55°, low 33°.
Pressure30.03 inHg
Wind12.9 mph SW
Humidity54%
Visibility—
Dew point30°
Wed, 1150° / 35°0
50 °
South Acton, Wednesday, 11 November
Overcast. High 50°, low 35°.
Pressure30.03 inHg
Wind11.1 mph W
Humidity52%
Visibility—
Dew point30°
Thu, 1244° / 32°0.11
44 °
South Acton, Thursday, 12 November
Snow. High 44°, low 32°.
Pressure30.18 inHg
Wind4.8 mph N
Humidity54%
Visibility—
Dew point24°
Fri, 1344° / 31°0.07
44 °
South Acton, Friday, 13 November
Snow. High 44°, low 31°.
Pressure30.15 inHg
Wind6.3 mph N
Humidity69%
Visibility—
Dew point29°
Sat, 1452° / 31°0
52 °
South Acton, Saturday, 14 November
Clear. High 52°, low 31°.
Pressure30.18 inHg
Wind9.4 mph W
Humidity53%
Visibility—
Dew point28°
Sun, 1559° / 36°0
59 °
South Acton, Sunday, 15 November
Clear. High 59°, low 36°.
Pressure30.21 inHg
Wind4.3 mph W
Humidity48%
Visibility—
Dew point31°
Mon, 1652° / 38°0.01
52 °
South Acton, Monday, 16 November
Light rain. High 52°, low 38°.
Pressure30.12 inHg
Wind11.8 mph NE
Humidity59%
Visibility—
Dew point33°
Tue, 1751° / 48°0.74
51 °
South Acton, Tuesday, 17 November
Rain. High 51°, low 48°.
Pressure29.44 inHg
Wind14.8 mph NE
Humidity97%
Visibility—
Dew point50°
Wed, 1848° / 43°0.01
48 °
South Acton, Wednesday, 18 November
Light rain. High 48°, low 43°.
Pressure29.53 inHg
Wind13 mph NW
Humidity86%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 1946° / 32°0.06
46 °
South Acton, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.06 in
Chance of precipitation18%
Record high64° (1991)
Record low13° (1986)
Fri, 2046° / 32°0.12
46 °
South Acton, Friday, 20 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.12 in
Chance of precipitation33%
Record high68° (1991)
Record low7° (1986)
Sat, 2145° / 31°0.12
45 °
South Acton, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.12 in
Chance of precipitation32%
Record high60° (1991)
Record low15° (1967)
Sun, 2244° / 31°0.15
44 °
South Acton, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.15 in
Chance of precipitation38%
Record high62° (1999)
Record low4° (2018)
Mon, 2344° / 30°0.14
44 °
South Acton, Monday, 23 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.14 in
Chance of precipitation25%
Record high66° (1999)
Record low6° (2018)
Tue, 2444° / 31°0.07
44 °
South Acton, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.07 in
Chance of precipitation28%
Record high66° (1979)
Record low3° (1989)
Wed, 2545° / 31°0.14
45 °
South Acton, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.14 in
Chance of precipitation30%
Record high65° (1979)
Record low15° (1997)
Thu, 2646° / 32°0.18
46 °
South Acton, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.18 in
Chance of precipitation45%
Record high63° (1979)
Record low17° (1978)
Fri, 2746° / 31°0.12
46 °
South Acton, Friday, 27 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.12 in
Chance of precipitation38%
Record high62° (1979)
Record low14° (1978)
Sat, 2846° / 32°0.18
46 °
South Acton, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.18 in
Chance of precipitation35%
Record high65° (1990)
Record low14° (2002)
Sun, 2944° / 31°0.07
44 °
South Acton, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.07 in
Chance of precipitation27%
Record high65° (2011)
Record low10° (2014)
Mon, 3043° / 30°0.1
43 °
South Acton, Monday, 30 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.1 in
Chance of precipitation28%
Record high62° (2006)
Record low17° (2013)
Tue, 0143° / 30°0.11
43 °
South Acton, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.11 in
Chance of precipitation32%
Record high65° (2001)
Record low12° (1989)
Wed, 0242° / 29°0.11
42 °
South Acton, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.11 in
Chance of precipitation23%
Record high63° (2006)
Record low10° (1989)
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.