Monthly outlook for West Acton, MA: average high 58.1°, average low 38.3°. That is 1.1° above the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 26 October (67.5°), the coolest 24 October (32.6°).
58.1°/38.3°
Average high / low
+1.1°
Above normal
2 / 5
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
60.1°
56.8°
+1.9°
31 October – 9 November
54.7°
53.5°
+0.7°
10 November – 19 November
at normal
48°
—
October records over 66 years
85.8°5 October 2007All-time high
23.4°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Groton (11 mi).
Thu, 2266° / 44°0
66 °
West Acton, Thursday, 22 October
Mostly clear. High 66°, low 44°.
Pressure29.94 inHg
Wind11.6 mph N
Humidity35%
Visibility6.2 mi
Dew point32°
Fri, 2357° / 37°0
57 °
West Acton, Friday, 23 October
Clear. High 57°, low 37°.
Pressure30.36 inHg
Wind7 mph N
Humidity49%
Visibility6.2 mi
Dew point29°
Sat, 2460° / 33°0
60 °
West Acton, Saturday, 24 October
Clear. High 60°, low 33°.
Pressure30.50 inHg
Wind1.3 mph NW
Humidity40%
Visibility6.2 mi
Dew point29°
Sun, 2564° / 35°0
64 °
West Acton, Sunday, 25 October
Clear. High 64°, low 35°.
Pressure30.53 inHg
Wind2.4 mph SW
Humidity36%
Visibility6.2 mi
Dew point33°
Mon, 2668° / 41°0
68 °
West Acton, Monday, 26 October
Clear. High 68°, low 41°.
Pressure30.33 inHg
Wind6.2 mph SW
Humidity42%
Visibility—
Dew point35°
Tue, 2754° / 40°0
54 °
West Acton, Tuesday, 27 October
Overcast. High 54°, low 40°.
Pressure30.42 inHg
Wind6.5 mph N
Humidity67%
Visibility—
Dew point42°
Wed, 2858° / 41°0
58 °
West Acton, Wednesday, 28 October
Overcast. High 58°, low 41°.
Pressure30.21 inHg
Wind9.5 mph SW
Humidity71%
Visibility—
Dew point42°
Thu, 2957° / 40°0
57 °
West Acton, Thursday, 29 October
Partly cloudy. High 57°, low 40°.
Pressure30.12 inHg
Wind9.3 mph SW
Humidity49%
Visibility—
Dew point34°
Fri, 3059° / 36°0
59 °
West Acton, Friday, 30 October
Clear. High 59°, low 36°.
Pressure30.33 inHg
Wind4.3 mph SW
Humidity45%
Visibility—
Dew point29°
Sat, 3160° / 38°0
60 °
West Acton, Saturday, 31 October
Clear. High 60°, low 38°.
Pressure30.47 inHg
Wind5 mph E
Humidity47%
Visibility—
Dew point32°
Sun, 0160° / 39°0
60 °
West Acton, Sunday, 1 November
Clear. High 60°, low 39°.
Pressure30.47 inHg
Wind6.4 mph E
Humidity66%
Visibility—
Dew point41°
Mon, 0253° / 42°0.01
53 °
West Acton, Monday, 2 November
Light rain. High 53°, low 42°.
Pressure30.15 inHg
Wind7.6 mph SW
Humidity84%
Visibility—
Dew point45°
Tue, 0352° / 37°0.04
52 °
West Acton, Tuesday, 3 November
Light rain. High 52°, low 37°.
Pressure29.62 inHg
Wind15.7 mph W
Humidity66%
Visibility—
Dew point36°
Wed, 0444° / 33°0
44 °
West Acton, Wednesday, 4 November
Clear. High 44°, low 33°.
Pressure29.94 inHg
Wind15.5 mph W
Humidity42%
Visibility—
Dew point21°
Thu, 0560° / 34°0.22
60 °
West Acton, Thursday, 5 November
Rain. High 60°, low 34°.
Pressure30.00 inHg
Wind18.2 mph S
Humidity59%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0652° / 40°0.13
52 °
West Acton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.13 in
Chance of precipitation35%
Record high76° (2024)
Record low27° (2012)
Sat, 0752° / 38°0.05
52 °
West Acton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.05 in
Chance of precipitation23%
Record high73° (2020)
Record low26° (1962)
Sun, 0851° / 37°0.09
51 °
West Acton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.09 in
Chance of precipitation23%
Record high71° (2020)
Record low25° (1960)
Mon, 0951° / 37°0.1
51 °
West Acton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.1 in
Chance of precipitation30%
Record high72° (2020)
Record low23° (1971)
Tue, 1051° / 37°0.15
51 °
West Acton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.15 in
Chance of precipitation38%
Record high72° (2020)
Record low22° (1992)
Wed, 1150° / 37°0.11
50 °
West Acton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.11 in
Chance of precipitation32%
Record high72° (2020)
Record low20° (2017)
Thu, 1249° / 36°0.13
49 °
West Acton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.13 in
Chance of precipitation37%
Record high72° (2022)
Record low23° (1976)
Fri, 1347° / 34°0.15
47 °
West Acton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.15 in
Chance of precipitation38%
Record high68° (1964)
Record low16° (2019)
Sat, 1447° / 34°0.12
47 °
West Acton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.12 in
Chance of precipitation25%
Record high65° (1973)
Record low9° (1986)
Sun, 1548° / 34°0.12
48 °
West Acton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.12 in
Chance of precipitation37%
Record high72° (1993)
Record low19° (1967)
Mon, 1648° / 34°0.15
48 °
West Acton, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.15 in
Chance of precipitation25%
Record high66° (2005)
Record low13° (1967)
Tue, 1747° / 32°0.13
47 °
West Acton, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.13 in
Chance of precipitation30%
Record high64° (2006)
Record low11° (1972)
Wed, 1847° / 33°0.07
47 °
West Acton, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.07 in
Chance of precipitation23%
Record high66° (1963)
Record low23° (2020)
Thu, 1946° / 32°0.06
46 °
West 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)
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 West 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 West 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.