Monthly outlook for South Acton, MA: average high 49.9°, average low 37.3°. That is 0.8° above the climate normal for November. Precipitation is expected on 7 days (about 3.3 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 6 November (64.7°), the coolest 19 November (26.3°).
49.9°/37.3°
Average high / low
+0.8°
Above normal
7 / 5
Wet days / normal
3.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
6 November – 15 November
51.2°
49.9°
+0.7°
16 November – 25 November
47.7°
45.4°
+1.2°
26 November – 5 December
at normal
43.1°
—
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).
Sat, 0763° / 52°0.41
63 °
South Acton, Saturday, 7 November
Rain. High 63°, low 52°.
Pressure29.68 inHg
Wind4.2 mph N
Humidity82%
Visibility6.2 mi
Dew point53°
Sun, 0857° / 44°0.44
57 °
South Acton, Sunday, 8 November
Heavy rain. High 57°, low 44°.
Pressure29.71 inHg
Wind12.1 mph W
Humidity45%
Visibility6.2 mi
Dew point35°
Mon, 0955° / 44°0.16
55 °
South Acton, Monday, 9 November
Rain. High 55°, low 44°.
Pressure29.65 inHg
Wind10.8 mph W
Humidity56%
Visibility6.2 mi
Dew point39°
Tue, 1051° / 39°0.02
51 °
South Acton, Tuesday, 10 November
Light rain. High 51°, low 39°.
Pressure29.83 inHg
Wind9.6 mph W
Humidity57%
Visibility6.2 mi
Dew point36°
Wed, 1153° / 37°0
53 °
South Acton, Wednesday, 11 November
Partly cloudy. High 53°, low 37°.
Pressure29.85 inHg
Wind10.1 mph NW
Humidity57%
Visibility—
Dew point36°
Thu, 1250° / 34°0
50 °
South Acton, Thursday, 12 November
Overcast. High 50°, low 34°.
Pressure29.91 inHg
Wind7.7 mph E
Humidity56%
Visibility—
Dew point30°
Fri, 1344° / 33°1.01
44 °
South Acton, Friday, 13 November
Snow. High 44°, low 33°.
Pressure29.65 inHg
Wind15.9 mph N
Humidity98%
Visibility—
Dew point34°
Sat, 1437° / 34°0.11
37 °
South Acton, Saturday, 14 November
Snow. High 37°, low 34°.
Pressure29.71 inHg
Wind8.1 mph N
Humidity98%
Visibility—
Dew point35°
Sun, 1538° / 30°0.09
38 °
South Acton, Sunday, 15 November
Snow. High 38°, low 30°.
Pressure29.88 inHg
Wind8.6 mph N
Humidity98%
Visibility—
Dew point36°
Mon, 1644° / 29°0
44 °
South Acton, Monday, 16 November
Mostly clear. High 44°, low 29°.
Pressure30.21 inHg
Wind7.5 mph NW
Humidity76%
Visibility—
Dew point33°
Tue, 1750° / 32°0
50 °
South Acton, Tuesday, 17 November
Mostly clear. High 50°, low 32°.
Pressure30.18 inHg
Wind8.1 mph W
Humidity76%
Visibility—
Dew point37°
Wed, 1842° / 29°0
42 °
South Acton, Wednesday, 18 November
Clear. High 42°, low 29°.
Pressure30.33 inHg
Wind12.8 mph NW
Humidity69%
Visibility—
Dew point30°
Thu, 1943° / 26°0
43 °
South Acton, Thursday, 19 November
Clear. High 43°, low 26°.
Pressure30.62 inHg
Wind5.5 mph SW
Humidity32%
Visibility—
Dew point9°
Fri, 2051° / 33°0
51 °
South Acton, Friday, 20 November
Clear. High 51°, low 33°.
Pressure30.42 inHg
Wind10.1 mph SW
Humidity53%
Visibility—
Dew point28°
Sat, 2157° / 40°0
57 °
South Acton, Saturday, 21 November
Overcast. High 57°, low 40°.
Pressure30.18 inHg
Wind9.2 mph SW
Humidity61%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Thu, 0342° / 28°0.15
42 °
South Acton, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.15 in
Chance of precipitation33%
Record high64° (2009)
Record low7° (1976)
Fri, 0441° / 27°0.11
41 °
South Acton, Friday, 4 December
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.11 in
Chance of precipitation25%
Record high64° (1982)
Record low7° (1989)
Sat, 0539° / 27°0.14
39 °
South Acton, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.14 in
Chance of precipitation30%
Record high63° (2001)
Record low2° (2025)
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.