Monthly outlook for Townsend Harbor, MA: average high 56.2°, average low 38.2°. That is 0.8° below the climate normal for October. Precipitation is expected on 1 day (about 0.6 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 16 October (67.6°), the coolest 25 October (32.5°).
56.2°/38.2°
Average high / low
−0.8°
Below normal
1 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
58.6°
59.1°
-0.3°
25 October – 3 November
52.2°
55.4°
-1.7°
4 November – 13 November
at normal
51.1°
—
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 (6 mi).
Fri, 1668° / 45°0.61
68 °
Townsend Harbor, Friday, 16 October
Heavy rain. High 68°, low 45°.
Pressure29.77 inHg
Wind10.7 mph S
Humidity96%
Visibility2.0 mi
Dew point56°
Sat, 1760° / 38°0
60 °
Townsend Harbor, Saturday, 17 October
Partly cloudy. High 60°, low 38°.
Pressure30.06 inHg
Wind14 mph NW
Humidity52%
Visibility6.2 mi
Dew point26°
Sun, 1851° / 33°0
51 °
Townsend Harbor, Sunday, 18 October
Clear. High 51°, low 33°.
Pressure30.59 inHg
Wind1.2 mph NE
Humidity50%
Visibility6.2 mi
Dew point20°
Mon, 1959° / 37°0
59 °
Townsend Harbor, Monday, 19 October
Clear. High 59°, low 37°.
Pressure30.53 inHg
Wind6 mph SW
Humidity43%
Visibility—
Dew point30°
Tue, 2062° / 39°0
62 °
Townsend Harbor, Tuesday, 20 October
Overcast. High 62°, low 39°.
Pressure30.24 inHg
Wind7 mph NE
Humidity52%
Visibility—
Dew point37°
Wed, 2158° / 42°0
58 °
Townsend Harbor, Wednesday, 21 October
Clear. High 58°, low 42°.
Pressure30.33 inHg
Wind8.7 mph NE
Humidity56%
Visibility—
Dew point38°
Thu, 2255° / 36°0
55 °
Townsend Harbor, Thursday, 22 October
Clear. High 55°, low 36°.
Pressure30.42 inHg
Wind4.9 mph N
Humidity51%
Visibility—
Dew point30°
Fri, 2362° / 40°0
62 °
Townsend Harbor, Friday, 23 October
Clear. High 62°, low 40°.
Pressure30.21 inHg
Wind13.1 mph NW
Humidity50%
Visibility—
Dew point38°
Sat, 2452° / 36°0
52 °
Townsend Harbor, Saturday, 24 October
Clear. High 52°, low 36°.
Pressure30.50 inHg
Wind7.3 mph NE
Humidity48%
Visibility—
Dew point27°
Sun, 2549° / 33°0
49 °
Townsend Harbor, Sunday, 25 October
Overcast. High 49°, low 33°.
Pressure30.56 inHg
Wind4.5 mph N
Humidity49%
Visibility—
Dew point25°
Mon, 2658° / 38°0
58 °
Townsend Harbor, Monday, 26 October
Overcast. High 58°, low 38°.
Pressure30.18 inHg
Wind8.3 mph W
Humidity50%
Visibility—
Dew point32°
Tue, 2754° / 39°0
54 °
Townsend Harbor, Tuesday, 27 October
Partly cloudy. High 54°, low 39°.
Pressure30.06 inHg
Wind11.2 mph W
Humidity47%
Visibility—
Dew point30°
Wed, 2851° / 38°0
51 °
Townsend Harbor, Wednesday, 28 October
Clear. High 51°, low 38°.
Pressure30.03 inHg
Wind11 mph W
Humidity50%
Visibility—
Dew point28°
Thu, 2951° / 34°0
51 °
Townsend Harbor, Thursday, 29 October
Overcast. High 51°, low 34°.
Pressure30.06 inHg
Wind10.8 mph W
Humidity55%
Visibility—
Dew point30°
Fri, 3050° / 38°0.02
50 °
Townsend Harbor, Friday, 30 October
Snow. High 50°, low 38°.
Pressure29.85 inHg
Wind12.2 mph NW
Humidity56%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3155° / 39°0.09
55 °
Townsend Harbor, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.09 in
Chance of precipitation22%
Record high77° (2024)
Record low23° (2020)
Sun, 0156° / 40°0.12
56 °
Townsend Harbor, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.12 in
Chance of precipitation30%
Record high75° (2024)
Record low29° (2011)
Mon, 0255° / 40°0.09
55 °
Townsend Harbor, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.09 in
Chance of precipitation28%
Record high74° (1982)
Record low26° (2011)
Tue, 0355° / 40°0.17
55 °
Townsend Harbor, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.17 in
Chance of precipitation37%
Record high72° (2017)
Record low25° (2002)
Wed, 0454° / 39°0.04
54 °
Townsend Harbor, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.04 in
Chance of precipitation22%
Record high73° (1987)
Record low27° (2002)
Thu, 0554° / 39°0.15
54 °
Townsend Harbor, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.15 in
Chance of precipitation32%
Record high75° (2022)
Record low28° (1965)
Fri, 0652° / 40°0.13
52 °
Townsend Harbor, 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 °
Townsend Harbor, 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 °
Townsend Harbor, 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 °
Townsend Harbor, 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 °
Townsend Harbor, 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 °
Townsend Harbor, 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 °
Townsend Harbor, 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 °
Townsend Harbor, 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)
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 Townsend Harbor, 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 Townsend Harbor, 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.